CN102890816B - Video image zooming disposal route and video image zooming treating apparatus - Google Patents

Abstract

The invention provides a video image scaling processing method and a video image scaling processing device, which relate to the field of electronic technology. The technical problem of single function and cumbersome operation in the prior art is solved. The video image zoom processing method adopts different zoom processing when the video window and the playback window overlap, or is smaller than the playback window, and specifically includes the steps of: receiving a trigger signal input through the peripheral device, and determining the zoom factor according to the trigger signal; when the playback window When it coincides with the video window, the partial video image cut from the original video image is played on the video window according to the zoom factor; when the video window is smaller than the playback window, the video window is scaled proportionally according to the zoom factor, and the original image is displayed in the zoomed video window video image. The video image scaling processing device includes a user interface, a player, and peripherals, and the player includes a playback window, a video window, and a playback control module. The invention is used for scaling video images.

Description

Video image scaling processing method and video image scaling processing device

technical field

The present invention relates to the field of electronic technology, in particular to a video image scaling processing method and a video image scaling processing device using the video image scaling processing method.

Background technique

With the rapid development of video playback technology, the functions of players for playing video files and audio files are becoming more and more powerful, and the types are also becoming more and more abundant.

Existing players, such as realplayer, windows media player, etc., cannot scale (shrink or enlarge) the video image in the playback window when the size of the playback window of the player is constant when playing video files. Function comparison Single, user experience (User Experience, referred to as UE) is poor.

QQ video player has the function of enlarging the video image displayed in the playback window under the condition that the frame size of the playback window remains unchanged. Pull out a rectangular area on the video image in the playback window of the player, and then the player will enlarge the video image in the rectangular area to the entire playback window, so that when the frame size of the playback window of the player remains unchanged , to enlarge and display the video image in the playback window.

The inventor found in the process of realizing the present invention that the prior art has at least the following technical problems:

In the prior art, although the QQ audio-visual player can zoom in and display the video image in the playback window when the frame size of the playback window of the player remains unchanged, in the prior art, the video image can only be zoomed in and displayed roughly. Accurate magnification of the video image cannot be achieved, that is, it cannot be magnified with an accurate multiple, and before zooming in in the prior art, it is necessary to hold down the left button of the mouse to draw a rectangular area on the video image in the playback window of the player. Only then can enlargement be realized, and the step of pulling out a rectangular area is also relatively cumbersome to operate, so the prior art has the technical problems of single function and cumbersome operation.

Contents of the invention

The invention provides a video image scaling processing method and a video image scaling processing device using the video image scaling processing method, which solves the technical problems of single function and cumbersome operation in the prior art.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

The video image scaling processing method provided by the present invention comprises the following steps:

When the video window and the playback window overlap, or are smaller than the playback window, different zoom processing is used, specifically including the following steps:

receiving a trigger signal input through the peripheral, and determining the scaling factor according to the trigger signal;

When the play window overlaps with the video window, play a part of the video image intercepted from the original video image according to the scaling factor on the video window;

When the video window is smaller than the playback window, the video window is scaled proportionally according to the zoom factor, and the original video image is displayed in the zoomed video window.

The video image scaling processing device using the video image scaling processing method provided by the present invention includes a user interface, a player, and peripherals. The player includes a playback window, a video window, and a playback control module. The video window is located at Within the play window, where:

The user interaction interface is configured to receive a trigger signal input through a peripheral device;

The playback control module is configured to determine the zoom factor according to the trigger signal when the playback window coincides with the video window, and play the part intercepted from the original video image according to the zoom factor on the video window video images;

The user interaction interface is further configured to determine the zoom factor according to the trigger signal when the video window is smaller than the playback window and the original video image is displayed in the zoomed video window, and convert the video according to the zoom factor The window is scaled proportionally.

Compared with the prior art, any one of the above-mentioned technical solutions provided by the present invention has the following advantages:

When the playback window overlaps with the video window in the playback window, and the video window displays a part of the video image on the original video image, at this time, the size of the playback window and the video window has not changed, but the area of the video image displayed on the video window It is smaller than before, so the video image displayed on the video window brings the visual effect to the user that the video image displayed on the video window is enlarged compared with the original image, so you can play the video on the original video image The way of partial video image realizes the enlargement of the video image that video window plays, like this, can use above-mentioned technical scheme provided by the present invention, under the constant situation of the frame size of the video window in the playback window, the video of the playback window The original video image displayed in the window (the original video image refers to the video image that has not been enlarged or reduced) is enlarged and displayed, because in the present invention, it can be displayed by peripheral equipment (for example, by rolling the mouse wheel, pressing a certain button or pressing the left mouse button). key, right key input) to input the trigger signal, and determine the zoom factor according to the trigger signal, so the accurate zoom factor can be input to realize the precise zooming of the video image. The method of pulling out a rectangular area on the video image in the playback window of the player is simpler and more convenient than the operation, thereby solving the technical problems of single function and cumbersome operation in the prior art;

Besides, when the video window is smaller than the playback window, the present invention can realize proportional scaling (reduction and enlargement) of the video window and the video image displayed in it, so the functions are more abundant.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings according to these drawings without paying creative efforts.

Fig. 1 is a schematic flow chart of the video image scaling processing method provided by the present invention;

Fig. 2 is to use the video image scaling processing method provided by the present invention, when playing the partial video image on the original video image in the video window, the partial video image displayed in the current video window, the partial video image displayed in the processed video window A schematic diagram of the change process of the mapping coordinates of the corresponding pixel area on the corresponding pixel area of the original video image;

Fig. 3 is a video image scaling processing method provided by the present invention, when shrinking the video window and the video image of the part displayed in it, the pixel area corresponding to the video image before and after shrinking is on the pixel area corresponding to the original video image Schematic diagram of the changing process of the mapping coordinates of ;

Fig. 4 is a schematic diagram of the connection relationship of the internal main components of the preferred embodiment of the video image scaling processing device using the video image scaling processing method of the present invention.

Detailed ways

The technical solution in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The invention provides a video image scaling processing method with rich functions, simple operation and convenient use and a video image scaling processing device using the video image scaling processing method.

As shown in Figure 1, 1a, 1b, 1c, 1d, 1e and 1f are the sequence numbers of six parts included in Figure 1 respectively, wherein: the area shown in O represents the video window in the playback window; the left oblique line represents the video window The displayed video image; the area shown in A indicates the pixel area corresponding to the original video image; the right slash indicates the pixel area corresponding to the original video image, that is, the pixels in A; the area shown in P indicates the playback window of the player; the area shown in R Indicates that when the zoom factor is greater than 1, after the original video image is enlarged according to the zoom factor, the pixel area corresponding to the part of the video image displayed in the video window; the area indicated by S indicates that the video window in the playback window is enlarged and displayed, and the video before zooming in Window; the area shown in E indicates that when the zoom factor is less than 1, when the enlarged video image is zoomed out according to the zoom factor, after zooming out, the pixel area corresponding to the part of the video image displayed in the video window, that is, after the zoom out operation is completed Finally, the pixel area displayed by the video window; the cursor drawn by the solid line on the video window in the 1c and 1d parts of Fig. 1 indicates the position after the cursor translation operation, and the cursor drawn by the dotted line indicates the position of the cursor before the translation operation.

The video image scaling processing method provided by the embodiment of the present invention adopts different scaling processes when the video window O and the playback window P overlap, or the video window O is smaller than the playback window P, and specifically includes the following steps:

Receive the trigger signal input through the peripheral, and determine the zoom factor according to the trigger signal;

When the playback window P overlaps with the video window O, play the partial video images intercepted from the original video image according to the zoom factor on the video window O;

When the video window O is smaller than the playback window P, the video window O is scaled proportionally according to the scaling factor, and the original video image is displayed in the zoomed video window O.

Through the above method, not only can the video image displayed in the video window O be accurately enlarged when the playback window P overlaps with the video window O, but also when the video window O is smaller than the playback window P, the video window O and its Accurate scaling of the video image displayed within.

In the present invention, the trigger signal can be input through peripherals (for example, by rolling the mouse wheel, pressing a certain button, or pressing the left and right keys of the mouse) to input the trigger signal, and the zoom factor can be determined according to the trigger signal, so an accurate zoom factor can be input And then realize the accurate enlargement of video image, at the same time, compared with the method of pulling out a rectangular area on the video image in the playback window of the player, the operation is easier by inputting the trigger signal through the peripheral hardware and pressing the left button of the mouse in the prior art. For the sake of simplicity and convenience, the technical problems of single function and cumbersome operation in the prior art are solved.

The following will describe in more detail how the present invention implements the above-mentioned zoom-in and zoom-out operations in several parts.

Zoom in on the original video image displayed in the video window O:

As shown in parts 1a and 1c among Fig. 1, in the present embodiment, when the video window O in the playback window P overlaps with the video window O in the playback window P, the partial video image intercepted from the original video image is played on the video window O according to the scaling factor steps, including the following steps:

When the scaling factor is greater than 1, calculate the mapping coordinates of the pixel area corresponding to the part of the video image displayed in the video window 0 of the enlarged original video image according to the scaling factor in the corresponding pixel area of the original video image;

The pixel data corresponding to the pixel area defined by the mapping coordinates is extracted in real time, and a corresponding partial video image is played in the video window O according to the pixel data.

The pixel area corresponding to the original video image is the corresponding pixel area of the entire video image. When the pixel area corresponding to the original video image is played in the video window O, at this moment, what is displayed in the video window O is the original video image. Through the above The method can select a part of the pixel area (for example 1/2) on the pixel area corresponding to the original video image to play in the video window 0, at this time, the enlarged (for example 2 times) video image can be played in the video window 0.

Shrink video window O displayed by the part of the video image on the original video image:

As shown in parts 1c and 1e in Fig. 1, in this embodiment, when the playback window P overlaps with the video window O, the step of playing the part of the video image intercepted from the original video image according to the zoom factor on the video window O also includes The following steps:

When the zoom factor is less than 1, and when the video window 0 shows a part of the original video image, calculate the pixel area corresponding to the part of the video image displayed in the video window 0 according to the original video image reduced according to the zoom factor. The mapping coordinates in the pixel area A corresponding to the video image;

The pixel data corresponding to the pixel area defined by the mapping coordinates is extracted in real time, and a corresponding partial video image is played in the video window O according to the pixel data.

In the present invention, when the video window 0 shows the partial video image of the original video image, that is, when the pixel area R corresponding to the partial video image displayed by the video window 0 is less than the corresponding pixel area A of the original video image, it is illustrated that the video window O The displayed part of the video image is still in the enlarged state, for example: after the original video image is enlarged by 10 times, then reduced by 2 times, at this time, the part of the video image displayed in the video window O is still in the enlarged state of 5 times, so the reduced The pixel area E corresponding to the part of the video image displayed in the video window O is still smaller than the pixel area A corresponding to the original video image.

Because the present invention can also realize that under the situation that the border size of video window O is constant, the partial video image displayed in video window O is reduced and displayed, so that when the user uses a player to watch a video image, the frame size of video window O can be reduced. Under the same situation, arbitrarily zoom in and zoom out the part of the video image displayed in the video window O, for example: when the zoom factor is too large during zooming in, the zoomed video image can also be zoomed out again to get the desired video Image enlargement effect, so it is more convenient to use.

Shrink the original video image displayed in the video window O:

In this embodiment, the condition that the video window O is smaller than the playback window P also includes that the size of the video window O, the original video image and the playback window P overlap.

That is to say, when the size of the video window O and the original video image coincide with the playback window P, the video window O can also be scaled proportionally according to the scaling factor. Refers to the reduction of the frame of the video window O and the original video image.

As shown in parts 1a and 1b in Figure 1, in the present embodiment, the original video image is displayed in the video window O, and when the playback window P is not smaller than the video window O, the video image zoom processing method also includes the following steps:

When the original video image is displayed in the video window O, and the zoom factor is less than 1, the video window O is reduced according to the zoom factor, and the reduced position coordinates of the video window O are determined;

The step of reducing the position coordinates is: the height of the video window O is reduced to the product of the zoom factor and the height of the current video window O, and the width of the video window O is reduced to the product of the zoom factor and the width of the current video window O;

The pixel data corresponding to the original video image is extracted in real time, and the corresponding video image is played in the reduced video window O according to the pixel data.

There are two situations in which the playback window P is not smaller than the video window O. One is that the video window O is equal to the playback window P, that is, the playback window P overlaps with the video window O, and the other is that the playback window P is larger than the video window O.

When the pixel area R corresponding to the video image displayed in the video window 0 is the corresponding pixel area A of the original video image, the original video image displayed in the video window 0, at this time, the original video image is reduced and displayed, that is, the video window 0 display is reduced At this time, only the frame size of the video window O needs to be reduced, without changing the pixel area corresponding to the video image displayed in the video window O. For example, when the zoom factor is 1/2, the frame size of the video window O is reduced. 1/2 of the previous. At this time, the zoom factor can be set to 1/k, k is greater than 1, and when it is set to roll the scroll wheel backwards (or down), the sensor will generate a trigger signal, and k will increase by 1 or 0.1, that is, the value of the zoom factor will change. Small, at this time, it can be considered that the reduced original video image is zoomed out again. When the scroll wheel is rolled forward (or upward), the sensor generates a trigger signal, and k decreases by 1 or 0.1, that is, the value of the zoom factor increases. When When the value of k is reduced to 1, when the scroll wheel continues to roll forward (or upward), the sensor generates a trigger signal, which is considered to increase the zoom factor from 1 to 2 or 1.1, and if the scroll wheel continues to scroll forward (or upward) When the sensor generates a trigger signal, the zoom factor increases by 1 or 0.1.

As shown in parts 1b and 1f in Fig. 1, the video image scaling processing method in this embodiment also includes the following steps:

Display original video image in video window O, when video window O is smaller than playback window P and zoom factor is greater than 1, enlarge video window O according to zoom factor, determine video window O zoom-in position coordinate; The step of zoom-in position coordinate is: the video window O The height enlargement of frame is the product of zoom factor and the height of current video window S shown in 1f part among Fig. 1, and the width of video window O is enlarged as the product of zoom factor and the width of current video window S;

The pixel data corresponding to the original video image is extracted in real time, and the corresponding video image is played in the enlarged video window according to the pixel data.

The current video window refers to the video window before the latest zoom-in or zoom-out. For example, if you want to zoom in the video window for the fifth time, the current video window is the video window after the fourth zoom-in and before the fifth zoom-in.

According to the above method, when the pixel area corresponding to the video image displayed in the video window O is the corresponding pixel area of the original video image, the reduced video window O and the video image reduced in the same ratio as the video window O are enlarged again.

In this embodiment, the video image scaling processing method also includes the following steps:

When the video window O is smaller than the playback window P, fill the color between the video window O and the playback window P; and/or, when the boundary of the video image O moves into the video window P, between the boundary of the video window O and the video image Fill color.

The color of filling is preferably ColorKey color (transparent color) or black, also can fill other colors other than black such as blue, green, certainly, in the process of reducing video window O in the present embodiment, also can make playing window P follow The reduction of the video window O and the video image is proportionally reduced.

As shown in Figure 1, in the present embodiment, in this video image scaling processing method, according to the zoom factor, the pixel area corresponding to the part of the video image displayed in the video window O of the enlarged or reduced original video image is calculated in the original video The step of mapping the coordinates in the pixel area corresponding to the image includes the following steps:

Determine whether the cursor is located in the video window O;

When the cursor is located in the video window O, the pixel point in the pixel area pointed by the cursor or pointed to by the geometric center of the video window O is used as a point with a constant position, and the original video image enlarged according to the scaling factor is calculated in the video The mapping coordinates of the pixel area R corresponding to the partial video image displayed in the window O in the pixel area A corresponding to the original video image, or,

Taking the pixel points in the pixel area pointed to by the geometric center of the video window O as the point with constant position, calculate the pixel area corresponding to the part of the video image displayed in the video window O according to the original video image reduced by the zoom factor in the original video The mapping coordinates in the pixel area A corresponding to the image.

In this embodiment, when the cursor is located in the video window O, it is preferable to use the pixel point in the pixel area pointed by the cursor as a point with constant position, and calculate the pixel area R corresponding to the part of the video image displayed in the video window O in the original video image. The mapping coordinates in the corresponding pixel area A, since the position of the cursor can be manually controlled by the user, so the user can control the mapping in the pixel area R corresponding to the video image displayed in the video window O that needs to be enlarged by controlling the position of the cursor Coordinates, so that the position of part of the video image displayed in the video window O can be more freely enlarged or reduced, which is conducive to improving user experience.

In this embodiment, regardless of whether the cursor is located in the video window O, it is preferable to use the geometric center of the video window O as a point with a constant position, and calculate the corresponding part of the video image displayed in the video window O according to the original video image reduced by the zoom factor. The mapping coordinates of the pixel area in the pixel area A corresponding to the original video image, because the geometric center of the video window O is a point that is relatively easy to determine, so the pixel point in the pixel area pointed to by the geometric center of the video window O is used as the position constant When calculating the mapping coordinates of the corresponding pixel area on the original video image of the part of the video image displayed in the video window O of the reduced original video image in the pixel area A corresponding to the original video image, the calculation operation will be easier , the calculation efficiency will be higher.

The original video image zoomed in from the original video image displayed in the panning video window:

As shown in parts 1c and 1d in Figure 1, the video image scaling processing method provided by the present invention includes the following steps:

When the cursor is located in the playback window P of the player and the translation function key is activated, track the trajectory of the cursor in the playback window P;

When the play window P overlaps with the video window O in the play window P, and the video window O displays a part of the video image on the original video image, the video image displayed in the video window O is translated along with the cursor track.

When the playback window P overlaps with the video window O in the playback window P, and the video window O displays a part of the video image on the original video image, at this time, the size of the playback window P and the video window O does not change, but the video window O The area of the video image displayed on the screen is smaller than before, so the visual effect brought to the user by the video image displayed on the video window O is that the video image displayed on the video window O is enlarged compared with the original image, so it can be obtained by The method of playing the partial video image on the original video image in the video window O realizes the enlargement of the video image played in the video window O. When the frame size of the frame is unchanged, after zooming in on the original video image (referring to the video image that has not been enlarged or reduced) displayed in the video window O of the playback window P, you want to translate the video image displayed in the playback window P , you can first activate the panning function key (for example: hold down the Ctrl key and press the left mouse button at the same time), and then move the video image displayed in the playback window P by moving the cursor, so that the video window in the playback window P O undisplayed video image moves to video window O display, compares with prior art, when viewing the undisplayed video image in the video window O under the zoomed-in state in the present invention, needn't first restore the enlarged video, also need not again Pull out a rectangular area again, so it is more convenient to operate.

In this embodiment, when the translation function key is activated, the trigger signal sent by it can be used as a translation command, for example, when the Ctrl key and the left mouse button are activated, the trigger signal sent can be used as a translation command. Since the position of the cursor is controlled by the mouse, when setting in this way, the video image displayed in the video window O can be confirmed to be translated by clicking the left button of the mouse. Of course, in this embodiment, the trigger signal sent when the right button of the mouse and/or other buttons are triggered can also be used as the translation command.

In this embodiment, the following provided by the present invention can be used. As shown in FIG. The step of the partial video image on the original video image is to enlarge and display the video image displayed in the video window O, and then, after the video image displayed in the video window O is enlarged, then use the above-mentioned method provided by the present invention to translate the video window O Part of the video image displayed in the video window can also be enlarged using the method provided in the prior art to zoom in on the video image displayed in the video window O, and then use the above-mentioned method provided by the present invention to translate the enlarged video image in the video window O.

The original video image shrunk down from the original video image displayed in the panning video window:

In this embodiment, the video image scaling processing method also includes the following steps:

When the play window P is not smaller than the video window O in the play window P, and the video window O displays the original video image, make the video window O and the video image displayed in it move along with the track of the cursor.

There are two situations where the playback window P is not smaller than the video window O in the playback window P. One is that the playback window P overlaps with the video window O, and the other is that the playback window P is larger than the video window O. At this time, the video window O and the display in it The video images are all reduced in the same ratio, so at this time, panning the video image needs to translate the video image and the video window O together. However, since the video window O displays the original video image at this time, the video image displayed by the video window O The pixel area corresponding to the original video image is all the pixel areas corresponding to the original video image.

In this embodiment, the track of the cursor is the track of the cursor moving in the video window O, and the step of making the video window O and the video images displayed therein translate along with the track of the cursor in the video image scaling processing method includes the following steps :

According to the correspondence between the coordinates of the video window O in the playback window P before translation, the trajectory of the cursor, and the preset trajectory and the coordinates of the video window O, the coordinates of the video window O in the playback window P after the translation are calculated, and move the position of the video window O to a position corresponding to the calculated coordinates;

The pixel data corresponding to the original video image is extracted in real time, and the corresponding video image is played in the video window O according to the pixel data.

The track of the cursor can be the track that the cursor moves in the video window O, or the track that the cursor moves in the area between the video window O and the playback window P, preferably the track that moves in the video window O. The corresponding relationship between the trajectory and the coordinates of the video window O is artificially set in advance, preferably: the coordinates of the trajectory and the video window O are completely synchronized, so that during the translation process, the coordinates of the video window O and the cursor are relatively static.

In the video image zooming and processing method of the present embodiment, the step of making the video image displayed in the video window O shift along with the track of the cursor comprises the following steps:

Make the mapping coordinates of the pixel area corresponding to the part video image displayed by the video window 0 follow the track of the cursor to change on the pixel area corresponding to the original video image;

The pixel data corresponding to the pixel area defined by the changed mapping coordinates is extracted in real time, and a tracking video image corresponding to the mapping coordinates is played in the video window O according to the pixel data.

Because the video window O displays part of the video image, the video image is in an enlarged state. At the same time, because the video window O and the play window P overlap each other and are relatively static, the part of the video image displayed in the play window P can be moved by moving the cursor. Thus, the video images not displayed in the video window O in the playback window P are moved to the video window O for display.

In this embodiment, the video image scaling processing method also includes the following steps:

When the video window O is smaller than the playback window P or partially moved out of the playback window P, fill the color between the video window O and the playback window P.

The color to be filled is preferably ColorKey color (transparent color) or black, and other colors other than black such as blue and green can also be filled.

The following examples illustrate in more detail how to specifically operate in the present invention to realize zooming in, zooming out and translation of video images played in the video window:

The process of zooming in:

When the video is playing, hold down the Ctrl key, and when the mouse pointer (cursor) is positioned on the screen (the video image displayed in the video window), the pointer becomes a magnifying glass. When the Ctrl key is released, the mouse pointer returns to the default shape, which is the shape before the magnifying glass shape.

When the mouse pointer is on the screen, press and hold the Ctrl key, and turn the mouse wheel forward, the mouse becomes a magnifying glass with a plus sign, and the screen is zoomed in proportion to the currently set aspect ratio. During zooming, the mouse pointer The located point maintains its relative position in the entire video window. Each time the mouse sends out a signal, the length and width of the screen are multiplied by 1.1 (the zoom factor can be set manually). When the screen is enlarged 60 times on the basis of the original size (the number of times can be set artificially), even if the mouse wheel is turned forward, the image will no longer be enlarged, and the mouse pointer will be displayed as a magnifying glass (without a plus sign).

The shrinking process:

When the mouse pointer is on the screen, press and hold the Ctrl key, and turn the middle mouse wheel backward, the mouse becomes a magnifying glass with a minus sign, and the screen is scaled down according to the current aspect ratio. If it is larger than the window, the point where the mouse pointer is located will maintain its relative position in the entire video window; if the screen is reduced to be smaller than the window, the screen will be centered. Each time the mouse sends out a signal, the length and width of the screen are divided by 1.1 (or multiplied by 1/1.1). When the screen is reduced 24 times from the original size (the number of times can be set manually), even if the mouse wheel is turned backward, the image will no longer shrink, and the mouse pointer will appear as a magnifying glass (without a minus sign).

If the screen has been rotated or flipped, perform screen zooming operations on the rotated, flipped screen.

When the screen is zoomed in or out, the information display area at the upper right corner of the screen will display: "Press and hold the Ctrl key, double-click to restore the screen". Here, restoration refers to returning the video window to the state of displaying the original video image;

Screen scaling is only valid for the current playback.

The process of translation:

When the video is playing, hold down the Ctrl key, and when the mouse pointer is on the screen, the pointer becomes a magnifying glass. When you release the Ctrl key, the mouse pointer returns to the default.

Hold down the Ctrl key, when the mouse pointer is on the screen, press and hold the left mouse button, the pointer becomes a hand shape, drag the mouse, and the screen pans accordingly. When the mouse moves one pixel, the screen also moves one pixel. Release the left mouse button, and the pointer returns to the shape of a magnifying glass.

If the screen has been rotated, flipped, zoomed in or zoomed out, perform the screen translation operation on the rotated, flipped, zoomed in or zoomed out screen.

When the screen is panned, the information display area at the upper right corner of the screen will display: "Press and hold the Ctrl key, double-click to restore the screen".

Screen panning is only valid for the current playback.

The algorithm used to realize the above-mentioned functions of the present invention is described in more detail below. The following algorithms are only some preferred embodiments provided by the present invention. The present invention can also be realized using other algorithms except the following algorithms:

In this embodiment, the pixel area A corresponding to the video window O and the original video image is rectangular, and both are preferably similar in shape;

Calculating the step of mapping the coordinates of the corresponding pixel area R in the corresponding pixel area A on the original video image of the partial video image displayed in the video window O according to the original video image enlarged by the zoom factor, comprising the following steps:

Take one of the vertices of the video window O as the window origin, and determine the coordinate value of the cursor relative to the window origin;

Taking one of the vertices of the pixel area corresponding to the video image before zooming in as the temporary origin of the pixel, according to the height and width of the border of the video window O and the proportional relationship between the height and width of the pixel area corresponding to the video image before zooming in, Determine the coordinate value of the position of the pixel point in the pixel area pointed by the cursor relative to the temporary origin of the pixel;

With one of the vertices of the original video image as the pixel reference origin, determine the coordinate value of the pixel temporary origin relative to the pixel reference origin, and according to the coordinate value, zoom factor, video window O height, The width and the coordinate value of the pixel point in the pixel area pointed by the cursor relative to the temporary origin of the pixel, and the height and width of the pixel area corresponding to the video image displayed in the video window O before zooming in are calculated according to the zoom factor after zooming in Coordinate values of at least two non-adjacent vertices of the pixel region R corresponding to the partial video image displayed in the video window O of the original video image relative to the pixel reference origin.

When the video window O and the pixel area A corresponding to the original video image are similar in shape and both are rectangular, the original video image can completely display the video image on the video window O. Certainly, video window O and original video image also can not be similar shapes, like this, video window O can play out the part video image on original video image, perhaps, when video window O plays original video image, video window O does not display image The parts can be filled with black.

Any vertex of the video window O can be used as the window origin, any vertex of the pixel area A corresponding to the original video image can be used as the temporary pixel origin, and the coordinate values of any two non-adjacent vertices can determine the position and size of a rectangle. In this embodiment, it is preferable to use the point at the upper left corner of the video window O as the window origin, use the point at the upper left corner of the pixel area A corresponding to the original video image as the temporary origin of the pixel, and use the original video image enlarged according to the scaling factor in the video The coordinates of the upper left corner point and the lower right corner point of the pixel region R corresponding to the part displayed in the window O determine the position of the pixel region R corresponding to the enlarged video image in the pixel region A corresponding to the original video image. Since the upper left corner point and the lower right corner point are points that are relatively easy to determine and identify, it is helpful to reduce the workload of calculation.

How to enlarge the video image in the video window O in the present invention will be explained in more detail below in conjunction with FIG. 2 .

As shown in Figure 2, the area shown in A has the same meaning as that in Figure 1, and the area shown in B represents the pixel area corresponding to the part of the video image displayed in the video window O before zooming in; the area shown in C represents the video image according to the zoom After the multiplier is enlarged, the pixel area corresponding to the part of the video image displayed in the video window O is the pixel area that is finally played and displayed by the video window O after the zoom operation;

The coordinates of the reference origin are (0, 0), and the coordinates of the pixel temporary origin are (Xbo, Ybo).

In this embodiment, the step of determining the position of the pixel point in the pixel area pointed by the cursor relative to the coordinate value of the temporary origin of the pixel is specifically:

According to the formula Px=W1*X/W, Py=H1*Y/H calculates the coordinate value of the position of the pixel point in the pixel region pointed by the cursor relative to the temporary origin of the pixel, wherein:

Px and Py are respectively the coordinate values of the abscissa and ordinate of the position of the pixel point in the pixel area pointed by the cursor relative to the temporary origin of the pixel;

W1 and H1 respectively respectively represent the width and height of the pixel area corresponding to the video image before zooming in;

X and Y are respectively the coordinate values of the abscissa and ordinate of the cursor relative to the origin of the window;

W, H are the width, the height of the frame of video window O respectively successively;

The step of calculating the coordinate values of at least two non-adjacent vertices relative to the pixel reference origin of the pixel area C corresponding to the partial video image displayed in the video window O of the original video image enlarged according to the zoom factor is specifically:

According to the formula Xo=(n-1)*Px/n+Xbo, Yo=(n-1)*Py/n+Ybo,

X1=W1/n+Xo, Y1=H1/n+Yo calculate respectively according to the vertex of the upper left corner and the lower right corner of the pixel area R corresponding to the part of the video image displayed in the video window O of the original video image enlarged by the zoom factor The coordinate value of the vertex relative to the pixel datum origin; where:

n is the scaling factor, n>1;

Xo, Yo are successively according to the abscissa and the ordinate of the abscissa and the ordinate of the abscissa and the ordinate of the pixel reference origin respectively according to the apex of the upper left corner of the pixel area R corresponding to the partial video image displayed in the video window O according to the original video image enlarged by the scaling factor;

X1, Y1 are respectively according to the abscissa and the coordinate value of the ordinate of the abscissa and the ordinate of the vertex in the lower right corner of the pixel area R corresponding to the part of the video image displayed in the video window O according to the original video image enlarged by the zoom factor, respectively;

Xbo and Ybo are respectively the coordinate values of the abscissa and ordinate of the temporary origin of the pixel relative to the reference origin of the pixel.

The coordinate values obtained through the above calculation can accurately realize the enlargement of the video image in the video window O when the position of the pixel point in the pixel area pointed by the cursor remains unchanged.

Make the mapping coordinates of the pixel area R corresponding to the part of the video image displayed by the video window O on the pixel area A corresponding to the original video image follow the track of the cursor translation and translate the steps, specifically:

In real time, the coordinate value of the abscissa coordinate value of the vertex in the upper left corner of the corresponding pixel region R corresponding to the video image displayed in the video window O is adjusted to Xo+ΔX*(n-1)/(n*W), vertical The coordinate value of the coordinate is adjusted to Yo+ΔY*(n-1)/(n*W);

In real time, the coordinate value of the abscissa of the abscissa of the abscissa of the pixel region R corresponding to the video image displayed in the video window O is adjusted to X1+ΔX*(n-1)/(n*W), vertical The coordinate value of the coordinate is adjusted to Y1+ΔY*(n-1)/(n*W), where:

ΔX and ΔY respectively represent the translation distances of the abscissa and ordinate of the cursor relative to the origin of the window during the translation process of the cursor on the video window O.

The coordinate values obtained through the above calculation can accurately realize the translation of part of the video images displayed in the video window O by moving the cursor.

Zoom out the video image that has been enlarged by the original video image displayed in the video window O:

The following describes in more detail how the present invention reduces the zoomed-in video image in the video window O in combination with parts 1c and 1e in FIG. 1 and FIG. 3 .

As shown in Figure 3, the meanings indicated by the areas shown in A and E are the same as in Figure 1, and the area shown in D indicates the part displayed in the video window before shrinking when the part of the video image displayed in the video window is reduced. The pixel area corresponding to the video image; the coordinates of the reference origin are (0, 0).

In this embodiment, when the pixel region R corresponding to the part of the video image displayed in the video window O is smaller than the pixel region A corresponding to the original video image, it is calculated that the pixel region corresponding to the part of the video image displayed in the video window O is smaller than the pixel region A corresponding to the original video image. The step of mapping coordinates in the corresponding pixel area A is specifically:

According to the formula XBo=Xo-(1-n)*(X1-Xo)*Xo/[Wo-(X1-Xo)],

YBo==Yo-(1-n)*(Y1-Yo)*Yo/[Ho-(Y1-Yo)],

XB1=X1+(1-n)*(X1-Xo)-X1*Xo/[Wo-(X1-Xo)],

YB1=Y1+(1-n)*(Y1-Yo)-Y1*Yo/[Ho-(Y1-Yo)] respectively calculate the part of the video displayed in the video window O in the pixel area A corresponding to the original video image The coordinate values of the vertex in the upper left corner and the vertex in the lower right corner of the pixel area corresponding to the image relative to the pixel reference origin; where:

n is the scaling factor, 1>n>0;

XBo, YBo respectively in the pixel region A corresponding to the original video image, according to the original video image reduced according to the zoom factor in the video window O, the part of the video image corresponding to the vertex in the upper left corner of the pixel region relative to the pixel reference origin Coordinate values of abscissa and ordinate;

XB1 and YB1 respectively respectively in the pixel area A corresponding to the original video image, the vertex in the lower right corner of the pixel area corresponding to the part of the video image displayed in the video window O by the original video image reduced according to the scaling factor relative to the pixel reference origin Coordinate values of abscissa and ordinate;

Wo and Ho respectively represent the width and height of the pixel area A corresponding to the original video image in turn.

As shown in Figure 3, since the pixels to be displayed in the X-axis direction after zooming out are: x1=(1-n)*(X1-Xo);

After zooming out, the pixels to be displayed in the direction of the Y axis are: y1=(1-n)*(Y1-Yo);

Therefore, after shrinking, the point (Xo, Yo) should be translated in the negative direction of the x-axis, and the translation distance is:

FBx=x1*Xo/[Wo-(X1-Xo)];

So, XBo＝Xo-x1*Xo/[Wo-(X1-Xo)]

=Xo-(1-n)*(X1-Xo)*Xo/[Wo-(X1-Xo)];

In the same way: after zooming out, the point (Xo, Yo) should be translated in the negative direction of the Y axis, and the translation distance is:

FBy=y1*Yo/[Ho-(Y1-Yo)];

Therefore, YBo=Yo-y1*Yo[Ho-(Y1-Yo)];

=Yo-(1-n)*(Y1-Yo)*Yo/[Ho-(Y1-Yo)];

After zooming out, the point (X1, Y1) should translate x1-FBx in the positive direction of the x-axis;

Therefore, the point (XB1, YB1) in the lower right corner after zooming out is

XB1=X1+x1-FBx;

=X1+(1-n)*(X1-Xo)-x1*Xo/[Wo-(X1-Xo)];

After zooming out, the point (X1, Y1) should translate y1-FBy in the positive direction of the Y axis;

YB1=Y1+y1-FBy;

=Y1+(1-n)*(Y1-Yo)-y1*Yo/[Ho-(Y1-Yo)];

When the displayed part of the video image in the video window O is reduced and displayed, the zoom factor n is greater than 0 and less than 1. At this time, since the zoomed video image is reduced, when the zoom factor is smaller than that of the original video image before When multiplied, although the video image is reduced, compared to the original video image that has never been enlarged, the effect that the video image displayed in the video window O brings to the user is that the video image is still in an enlarged state, for example, it will be enlarged by 6 times The video image is reduced to a video image that is enlarged by 2 times. At this time, although the video image has been reduced by 3 times, the video image that has been enlarged by 2 times is still in the state of 2 times for the unenlarged video image. Therefore, the partial video image displayed in the video window O is still only a partial video image on the original video image.

The coordinate values obtained through the above calculation can accurately realize the reduced display of the part of the video image displayed in the video window O when the position of the pixel point in the pixel area pointed by the cursor remains unchanged.

Since the senses of the user's naked eyes are usually not too accurate, appropriate errors can be allowed for the above coordinate values, and even appropriate changes can be made to the above coordinate values. Of course, other methods other than the above methods can also be used to determine the above coordinate values, for example, other suitable coordinate values can be set according to experience.

In this embodiment, the peripherals are a mouse and buttons, and the buttons include translation function keys and zoom function keys; the method of receiving a trigger signal input through the peripheral and determining the zoom factor according to the trigger signal includes the following steps:

Determine whether the predefined zoom function key is activated;

If the zoom function key has been activated, detect the number of trigger signals sent by the sensor in the scroll wheel and the scroll direction during the scrolling process of the scroll wheel;

The specific value of the zoom factor is determined according to the number of trigger signals sent by the sensor, the scrolling direction, and the corresponding rules between the preset times, the scrolling direction and the zoom factor.

The zoom function key can be set artificially, and the zoom function key and the translation function key can also be the same key. For example, both the zoom function key and the translation function key can be set as the Ctrl key.

When the zoom function key is pressed, the zoom factor can be input by rolling the wheel, for example: when the video image displayed in the video window is to be enlarged, it can be set to roll the wheel forward (or upward) once, The sensor generates a trigger signal, and the zoom factor increases by 0.1, that is, when the scroll wheel is rolled forward (or upward) for the first time, the zoom factor changes from 1 to 1.1, and the video image is enlarged by 1.1 times, which means that the initial value of the zoom factor can be defaulted It is 1, or it can be 1.1 by default. At this time, it can be set that when the scroll wheel is rolled forward (or upward) within a predetermined time, the sensor generates a trigger signal, and the zoom factor n changes from n (for example, 1.1) to the square of n ( For example, 1.21) or the zoom factor n changes from n (such as 1) to n+0.1. When the scroll wheel is scrolled backward (or down), the sensor generates a trigger signal, and the zoom factor n changes from n (such as 1.21) to n. The square root (such as 1.1) or the zoom factor n changes from n (such as 1) to n-0.1 until n is 1. At this time, if you continue to scroll backwards (or down) within the predetermined time, the sensor will generate a Trigger signal, scaling factor n changes from n (for example 1) to 1-0.1 or 0.9 or from 1/k to 1/(k+1) or 1/(k+0.1), when n is 1, k If it is 1, if you continue to scroll the scroll wheel backwards (or down), the sensor will generate a trigger signal, and k will increase by 1.

Of course, in this embodiment, pressing the key may input the zoom factor by pressing the + or - sign (for example: press once + the zoom factor plus 1 or 0.1) or directly input a specific value.

As shown in Figure 4, the video image scaling processing device provided by the present invention using the above-mentioned video image scaling processing method provided by the present invention includes a user interface 1, a player 2, and peripherals, and the player 2 includes a playback window 20 , video window 200 and play control module 25, video window 200 is positioned within the play window 20, wherein:

User interaction interface 1, configured to receive trigger signals input through peripherals;

Play control module 25, for when play window 20 overlaps with video window 200, determine zoom factor according to trigger signal, play on video window 200 according to the partial video image that zoom factor intercepts from original video image;

The user interface 1 is also used to determine the zoom factor according to the trigger signal when the video window 200 is smaller than the playback window 20 and the original video image is displayed in the zoomed video window 200, and scale the video window 200 proportionally according to the zoom factor.

The video image scaling processing device provided by the present invention has the same technical characteristics as the above-mentioned video image scaling processing method provided by the present invention, so it can also achieve the same technical effect and solve the same technical problem, so it will not be repeated here. .

Player 2 in the present embodiment also includes video rendering module 24, wherein:

The play control module 25 is used for when the play window 20 overlaps with the video window 200, and when the zoom factor is greater than 1, calculate the pixel area corresponding to the part of the video image displayed in the video window 200 according to the zoom factor of the enlarged original video image. The mapping coordinates in the pixel area corresponding to the original video image;

The playback control module 25 is also used to calculate the partial video image displayed in the video window 200 according to the reduced original video image according to the zoom factor when the video window 200 shows a partial video image of the original video image and the zoom factor is less than 1. The mapping coordinates of the corresponding pixel area in the corresponding pixel area of the original video image;

The video rendering module 24 is configured to extract pixel data corresponding to the pixel area defined by the mapping coordinates in real time, and play corresponding partial video images in the video window 200 according to the pixel data.

The above method can realize the enlargement of the video image displayed in the video window 200 under the condition that the sizes of the playing window 20 and the video window 200 remain unchanged, and can also reduce the enlarged video image.

In the present embodiment, peripherals are mouse 5 and button 6, and player 2 also includes file reading module 21, separation module 22 and video decoding module 23, wherein:

The condition that the video window 200 is smaller than the playback window 20 also includes that the video window 200, the size of the original video image overlap with the playback window 20;

The user interaction interface 1 is also used to reduce the video window 200 according to the zoom factor when the original video image is displayed in the video window 200 and the zoom factor is less than 1, and determine the reduced position coordinates of the video window 200;

The user interaction interface 1 is also used to display the original video image in the video window 200. When the video window 200 is smaller than the playback window 20 and the zoom factor is greater than 1, determine the video window 200 enlarged position coordinates;

The step of determining the reduced position coordinates of the video window 200 is: reducing the height of the frame of the video window 200 to the product of the zoom factor and the height of the current video window 200, and reducing the width of the video window 200 to the product of the zoom factor and the width of the current video window 200 product;

The step of determining the enlarged position coordinates of the video window 200 is: amplifying the height of the frame of the video window 200 as the product of the zoom factor and the height of the current video window 200, and enlarging the width of the video window 200 as the product of the zoom factor and the width of the current video window 200 product;

The video rendering module 24 is also used to extract pixel data corresponding to the original video image in real time, and play a corresponding video image in the video window 200 according to the pixel data;

The file reading module 21 is used to read the video file obtained by the transmission control terminal from a node with video resources in the P2P network in a P2P manner, and send the video file to the separation module 22;

The separation module 22 is used to separate the video file into video encoding data and audio data, and sends the video encoding data to the video decoding module 23;

The video decoding module 23 is used to decode the video encoding data into pixel data corresponding to the pixel area of the video image and then input the video rendering module 24;

The playback control module 25 is also used to enable or disable the video rendering module 24 , the file reading module 21 , the separating module 22 and the video decoding module 23 .

Through the above-mentioned method, the user interface can realize proportional reduction of the video window 200 in the playback window 20 and the video image displayed in the video window 200, and can also realize proportional enlargement after the proportional reduction.

The transmission control terminal 7 acquires video files from nodes with video resources in the P2P network 8 in a P2P (Peer-to-Peer, Chinese can be translated as "peer" or "point-to-point") mode, which is conducive to the rapid transmission of video files. This in turn contributes to the fast playback of video images. Of course, the transmission control terminal 7 can also use other methods than P2P to obtain video files.

In the present embodiment, the user interaction interface is also used to fill the color between the reduced video window and the playback window. The color filled is preferably ColorKey color (transparent color) or black, and can also be filled outside black such as blue and green. other colors.

In this embodiment, the playback control module 25 processes the video image displayed in the video window 200 and the preferred implementation of the algorithm applied thereto is the same as the preferred implementation provided in the above-mentioned video image scaling processing method provided by the present invention. The same, so it will not be repeated here.

In the present invention, the mode of rolling the scroll wheel of the mouse 6 and/or pressing the button 5, preferably by holding down the Ctrl key, and scrolling the scroll wheel of the mouse 6 to input the zoom factor, thereby realizing that the frame size of the video window 200 is constant In this case, the original video image displayed in the video window 200 is zoomed in or zoomed out without drawing a rectangular area in the video window 200 by the method of the prior art, not only the zooming can be realized, but also the input zoom factor can be more accurate, and It can also be reduced, and at the same time, the operation is more convenient.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (6)

1. A video image scaling processing method is characterized in that, when the video window overlaps with the playback window, or when it is smaller than the playback window, different scaling processes are adopted, specifically comprising the following steps: receiving a trigger signal input through the peripheral, and determining the scaling factor according to the trigger signal; When the playback window coincides with the video window, and the size of the video window and the original video image do not overlap with the playback window, play the original video image according to the scaling factor on the video window Part of the video image captured above; When the video window is smaller than the playback window or the size of the video window and the original video image coincide with the playback window, the video window is scaled proportionally according to the scaling factor, and the zoomed video The original video image is displayed in the window; Wherein, the step of playing the partial video image intercepted from the original video image according to the zoom factor on the video window; comprises the following steps: When the scaling factor is greater than 1, the mapping of the pixel area corresponding to the part of the video image displayed in the video window of the enlarged original video image in the pixel area corresponding to the original video image is calculated according to the scaling factor coordinates; or, when the zoom factor is less than 1 and the video window displays a partial video image of the original video image, calculate the reduced video image according to the zoom factor and display it in the video window The mapping coordinates of the pixel area corresponding to the partial video image in the pixel area corresponding to the original video image; Extracting pixel data corresponding to the pixel area defined by the mapping coordinates in real time, and playing a corresponding partial video image in the video window according to the pixel data; Wherein, the pixel areas corresponding to the playing window, the video window and the original video image are all rectangular; In the video image scaling processing method, the mapping coordinates of the pixel area corresponding to the part of the video image displayed in the video window of the enlarged original video image in the pixel area corresponding to the original video image are calculated according to the zoom factor steps, including the following steps: Using the upper left corner vertex of the video window as the window origin, determine the coordinate value of the cursor relative to the window origin; Taking the upper left vertex of the pixel area corresponding to the video image displayed in the video window before zooming in as the temporary origin of the pixel, calculate the position of the cursor according to the formula Px=W1*X/W, Py=H1*Y/H Points to the coordinates of the pixel's location within the pixel region relative to the temporal origin of the pixel, where: Px and Py are respectively the coordinate values of the abscissa and ordinate of the position of the pixel in the pixel region pointed by the cursor relative to the temporary origin of the pixel; W1 and H1 respectively respectively represent the width and height of the pixel area corresponding to the video image before zooming in; X and Y are respectively the coordinate values of the abscissa and ordinate of the cursor relative to the origin of the window in turn; W and H are the width and height of the frame of the video window respectively in turn; According to the formula Xo=(n-1)*Px/n+Xbo, Yo=(n-1)*Py/n+Ybo, X1=W1/n+Xo, Y1=H1/n+Yo respectively calculate the vertex in the upper left corner of the pixel area corresponding to the part of the video image displayed in the video window after the video image is enlarged according to the zoom factor and the coordinate value of the vertex in the lower right corner relative to the pixel reference origin; where: n is the scaling factor, n>1; Xo and Yo are in turn the abscissas of the vertex in the upper left corner of the pixel area corresponding to the part of the video image displayed in the video window corresponding to the original video image enlarged according to the zoom factor relative to the pixel reference origin, The coordinate value of the ordinate; X1 and Y1 respectively represent the abscissas of the apex in the lower right corner of the pixel area corresponding to the part of the video image displayed in the video window corresponding to the original video image enlarged according to the zoom factor relative to the pixel reference origin, The coordinate value of the ordinate; Xbo and Ybo are respectively the coordinate values of the abscissa and ordinate of the temporary origin of the pixel relative to the reference origin of the pixel in turn; When the video window displays a partial video image, calculate the pixel area corresponding to the partial video image displayed in the video window according to the original video image reduced according to the scaling factor The steps of mapping coordinates in the pixel area are as follows: According to the formula XBo＝Xo-(1-n)*(X1-Xo)*Xo/[Wo-(X1-Xo)], YBo＝Yo-(1-n)*(Y1-Yo)*Yo/[Ho-(Y1-Yo)], XB1＝X1+(1-n)*(X1-Xo)-X1*Xo/[Wo-(X1-Xo)], YB1=Y1+(1-n)*(Y1-Yo)-Y1*Yo/[Ho-(Y1-Yo)] respectively calculates the pixel area corresponding to the original video image, according to the zoom factor after the reduction The coordinate value of the vertex in the upper left corner of the pixel area corresponding to the part of the video image displayed in the video window of the original video image and the vertex in the lower right corner relative to the pixel reference origin; wherein: n is the scaling factor, 1>n>0; XBo, YBo respectively in the pixel area corresponding to the original video image, according to the vertex in the upper left corner of the pixel area corresponding to the part of the video image displayed in the video window of the original video image after the zoom factor is reduced relative to The coordinate values of the abscissa and ordinate of the pixel reference origin; XB1, YB1 respectively in the pixel area corresponding to the original video image, the vertex in the lower right corner of the pixel area corresponding to the part of the video image displayed in the video window after the original video image is reduced according to the zoom factor is relative to The coordinate values of the abscissa and ordinate of the pixel reference origin; Wo and Ho respectively represent the width and height of the pixel area corresponding to the original video image in turn. 2. The video image scaling processing method according to claim 1, wherein when the video window is smaller than the playback window or the video window, the size of the original video image overlaps with the playback window , the step of scaling the video window proportionally according to the scaling factor also includes: A. When the original video image is displayed in the video window, and the zoom factor is less than 1, the video window is reduced according to the zoom factor, and the reduced position coordinates of the video window are determined, or the original video is displayed in the video window image and when the video window is smaller than the playback window, and when the zoom factor is greater than 1, the video window is enlarged according to the zoom factor, and the zoom position coordinates of the video window are determined; The step of determining the coordinates of the reduced position of the video window is: reducing the height of the video window to the product of the zoom factor and the height of the current video window, and reducing the width of the video window to the product of the zoom factor and the current height of the video window. the product of the widths of the currently described video windows; The step of determining the zoom position coordinates of the video window is: enlarging the height of the frame of the video window to the product of the zoom factor and the height of the current video window, and enlarging the width of the video window to the zoom factor multiplied by the width of the currently described video window; B. Extracting the pixel data corresponding to the original video image in real time, and playing the corresponding video image in the reduced video window according to the pixel data. 3. The video image zooming processing method according to claim 1, characterized in that, in the video image zooming processing method, the zoomed or reduced original video image is calculated according to the zoom factor and displayed in the video window The step of mapping the coordinates of the pixel area corresponding to the partial video image in the pixel area corresponding to the original video image comprises the following steps: judging whether the cursor is located in the video window; When the cursor is located in the video window, the pixel point in the pixel area pointed by the cursor or pointed to by the geometric center of the video window is used as a point with a constant position, and the magnification according to the zoom factor is calculated. The mapping coordinates of the pixel area corresponding to the part of the video image displayed in the video window after the original video image is in the pixel area corresponding to the original video image, or, Taking the pixel points in the pixel area pointed to by the geometric center of the video window as points with constant positions, calculate the pixels corresponding to the part of the video image displayed in the video window according to the original video image reduced by the zoom factor The mapping coordinates of the region in the corresponding pixel region of the original video image. 4. The video image scaling processing method according to claim 1, wherein the peripheral is a mouse and a button, and the button includes a zoom function key; The step of receiving a trigger signal input by a peripheral and determining the scaling factor according to the trigger signal includes the following steps: judging whether the predefined zoom function key is activated; If the zoom function key has been activated, detect the number of trigger signals sent by the sensor in the scroll wheel and the scroll direction during the scroll wheel scrolling process; The specific value of the zoom factor is determined according to the number of times of the trigger signal sent by the sensor, the scrolling direction, and a preset corresponding rule between the number of times, the scrolling direction and the zoom factor. 5. A video image scaling and processing device using any one of claims 1 to 4, wherein the video image scaling and processing method is characterized in that, the video image scaling and processing device includes a user interface, a player, and peripherals, and the The player includes a playback window, a video window and a playback control module, the video window is located within the playback window, wherein: The user interaction interface is configured to receive a trigger signal input through a peripheral device; The play control module is configured to determine according to the trigger signal when the play window coincides with the video window and the size of the video window and the original video image do not coincide with the play window. A zoom factor, playing a part of the video image intercepted from the original video image according to the zoom factor on the video window; The user interaction interface is also used for when the video window is smaller than the playback window and the original video image is displayed in the zoomed video window, or when the size of the video window and the original video image are the same as the size of the When the three playback windows overlap and the original video image is displayed in the zoomed video window, the zoom factor is determined according to the trigger signal, and the video window is scaled proportionally according to the zoom factor; Wherein, the player also includes a video rendering module, wherein: The playback control module is configured to calculate, according to the zoom factor, the number of times the enlarged original video image is displayed in the video window when the playback window coincides with the video window and the zoom factor is greater than 1. The mapping coordinates of the pixel area corresponding to the partial video image in the pixel area corresponding to the original video image; The playback control module is also used to calculate the original video image reduced according to the zoom factor when the video window displays a partial video image of the original video image and the zoom factor is less than 1. The mapping coordinates of the pixel area corresponding to the partial video image displayed in the video window in the pixel area corresponding to the original video image; The video rendering module is configured to extract pixel data corresponding to the pixel area defined by the mapping coordinates in real time, and play a corresponding partial video image in the video window according to the pixel data; Wherein, the pixel areas corresponding to the playing window, the video window and the original video image are all rectangular; In the video image scaling processing method, the mapping coordinates of the pixel area corresponding to the part of the video image displayed in the video window of the enlarged original video image in the pixel area corresponding to the original video image are calculated according to the zoom factor steps, including the following steps: Using the upper left corner vertex of the video window as the window origin, determine the coordinate value of the cursor relative to the window origin; Taking the upper left vertex of the pixel area corresponding to the video image displayed in the video window before zooming in as the temporary origin of the pixel, calculate the position of the cursor according to the formula Px=W1*X/W, Py=H1*Y/H Points to the coordinates of the location of a pixel point within the pixel region relative to the temporary origin of the pixel, where: Px and Py are respectively the coordinate values of the abscissa and ordinate of the position of the pixel in the pixel region pointed by the cursor relative to the temporary origin of the pixel; W1 and H1 respectively respectively represent the width and height of the pixel area corresponding to the video image before zooming in; X and Y are respectively the coordinate values of the abscissa and ordinate of the cursor relative to the origin of the window in turn; W and H are the width and height of the frame of the video window respectively in turn; According to the formula Xo=(n-1)*Px/n+Xbo, Yo=(n-1)*Py/n+Ybo, X1=W1/n+Xo, Y1=H1/n+Yo respectively calculate the vertex in the upper left corner of the pixel area corresponding to the part of the video image displayed in the video window after the video image is enlarged according to the zoom factor and the coordinate value of the vertex in the lower right corner relative to the pixel reference origin; where: n is the scaling factor, n>1; Xo and Yo are in turn the abscissas of the vertex in the upper left corner of the pixel area corresponding to the part of the video image displayed in the video window corresponding to the original video image enlarged according to the zoom factor relative to the pixel reference origin, The coordinate value of the ordinate; X1 and Y1 respectively represent the abscissas of the apex in the lower right corner of the pixel area corresponding to the part of the video image displayed in the video window corresponding to the original video image enlarged according to the zoom factor relative to the pixel reference origin, The coordinate value of the ordinate; Xbo and Ybo are respectively the coordinate values of the abscissa and ordinate of the temporary origin of the pixel relative to the reference origin of the pixel in turn; When the video window displays a partial video image, calculate the pixel area corresponding to the partial video image displayed in the video window according to the original video image reduced according to the scaling factor The steps of mapping coordinates in the pixel area are as follows: According to the formula XBo＝Xo-(1-n)*(X1-Xo)*Xo/[Wo-(X1-Xo)], YBo＝Yo-(1-n)*(Y1-Yo)*Yo/[Ho-(Y1-Yo)], XB1＝X1+(1-n)*(X1-Xo)-X1*Xo/[Wo-(X1-Xo)], YB1=Y1+(1-n)*(Y1-Yo)-Y1*Yo/[Ho-(Y1-Yo)] respectively calculates the pixel area corresponding to the original video image, according to the zoom factor after the reduction The coordinate value of the vertex in the upper left corner of the pixel area corresponding to the part of the video image displayed in the video window of the original video image and the vertex in the lower right corner relative to the pixel reference origin; wherein: n is the scaling factor, 1>n>0; XBo, YBo respectively in the pixel area corresponding to the original video image, according to the vertex in the upper left corner of the pixel area corresponding to the part of the video image displayed in the video window of the original video image after the zoom factor is reduced relative to The coordinate values of the abscissa and ordinate of the pixel reference origin; XB1, YB1 respectively in the pixel area corresponding to the original video image, the vertex in the lower right corner of the pixel area corresponding to the part of the video image displayed in the video window after the original video image is reduced according to the zoom factor is relative to The coordinate values of the abscissa and ordinate of the pixel reference origin; Wo and Ho respectively represent the width and height of the pixel area corresponding to the original video image in sequence. 6. The video image scaling processing device according to claim 5, wherein the peripherals are a mouse and a button, and the player also includes a file reading module, a separation module and a video decoding module, wherein: The user interaction interface is further configured to reduce the video window according to the zoom factor when the original video image is displayed in the video window and the zoom factor is less than 1, and determine the reduced position coordinates of the video window; The user interaction interface is also used to display the original video image in the video window, when the video window is smaller than the playback window and the zoom factor is greater than 1, or to display the original video image in the video window, the When the size of the video window, the original video image and the playback window coincide and the zoom factor is greater than 1, determine the enlarged position coordinates of the video window; The step of determining the reduced position coordinates of the video window is: reducing the height of the frame of the video window to the product of the zoom factor and the height of the current video window, and reducing the width of the video window to the zoom factor multiplied by the width of the currently described video window; The step of determining the zoom position coordinates of the video window is: enlarging the height of the frame of the video window to the product of the zoom factor and the height of the current video window, and enlarging the width of the video window to the zoom factor multiplied by the width of the currently described video window; The video rendering module is further configured to extract pixel data corresponding to the original video image in real time, and play a corresponding video image in the video window according to the pixel data; The file reading module is used to read the video file obtained by the transmission control terminal from a node with video resources in the P2P network in a P2P manner, and send the video file to the separation module; The separation module is used to separate the video file into video encoding data and audio data, and send the video encoding data to the video decoding module; The video decoding module is configured to decode the encoded video data into pixel data corresponding to the pixel area of the video image and then input it into the video rendering module; The playback control module is also used to enable or disable the video rendering module, the file reading module, the separation module and the video decoding module.