JP2007233256A - Projector, program, and information storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector, a program, and an information storage medium which allow a part of windows of an image supply device to be easily and efficiently projected. <P>SOLUTION: A projector 10 comprises; an image signal input part 110 for inputting an image signal from a PC 20; a selection information input part 120 for inputting selection information of at least one window; a window identification part 150 for identifying a position and a length in a horizontal direction of at least one window on the basis of the image signal, left end pattern data 132, and right end pattern data 134; a determination part 160 for determining which window has been selected, on the basis of the selection information; and an image information generation part 170 for generating image information for projecting an adjusted image being an image adjusted to an aspect ratio for projection, on the basis of the image signal and the position and the length in the horizontal direction of the window. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a projector, a program, and an information storage medium.

  When a presenter performs a presentation using a PC (Personal Computer) and a projector, an image may be projected while switching a plurality of windows displayed on the PC screen.

  Generally, the projector projects the same image as the image displayed on the screen of the PC. In such a case, an image that the presenter does not want to project, such as a desktop image, is also projected.

  In such a case, the presenter can hide the desktop image by maximizing and displaying one of the plurality of windows on the PC side, but the presenter can operate while simultaneously displaying the plurality of windows. Cannot be performed, and operability is reduced.

For example, Patent Document 1 describes that a window selection menu is displayed on the screen of a PC, and image data of the selected window is processed and transmitted to the projector.
JP 2004-86277 A

  However, Patent Document 1 does not describe a specific method for identifying individual windows. Further, Patent Document 1 requires an image area setting unit that captures the entire image data of the selected window, and an image processing unit that processes the entire image data. In order to actually implement the invention of Patent Document 1. However, the configuration and processing become complicated.

  An object of the present invention is to provide a projector, a program, and an information storage medium capable of projecting a part of a window of an image supply device more simply and efficiently.

In order to solve the above problems, a projector according to the present invention provides:
An image signal input unit for inputting an image signal for displaying the image from an image supply device on which an image including a plurality of windows is displayed;
A selection information input unit for inputting selection information of at least one of the plurality of windows;
A storage unit for storing left end pattern data for identifying the left end of the window and right end pattern data for identifying the right end of the window;
A window identifying unit for identifying a position and a horizontal length of at least one window included in the image based on the image signal, the left end pattern data, and the right end pattern data;
A determination unit for determining which window is selected based on the selection information;
Based on the image signal and the position and horizontal length of the window determined to be selected by the determination unit, the image includes at least a part of the window and is adjusted to an aspect ratio for projection. An image information generation unit for generating image information for projecting an adjusted image that is a corrected image;
A projection unit that projects the adjusted image based on the image information;
It is characterized by including.

A program according to the present invention includes a computer included in a projector.
An image signal input unit for inputting an image signal for displaying the image from an image supply device on which an image including a plurality of windows is displayed;
A selection information input unit for inputting selection information of at least one of the plurality of windows;
Based on the image signal, left edge pattern data for identifying the left edge of the window, and right edge pattern data for identifying the right edge of the window, the position and horizontal direction of at least one window included in the image are determined. A window identifier for identifying the length;
A determination unit for determining which window is selected based on the selection information;
Based on the image signal and the position and horizontal length of the window determined to be selected by the determination unit, the image includes at least a part of the window and is adjusted to an aspect ratio for projection. And an image information generation unit that generates image information for projecting an adjustment image that is a corrected image.

  An information storage medium according to the present invention is a computer-readable information storage medium and stores the above program.

  According to the present invention, the projector or the like can identify each window based on the pattern data, can determine which window has been selected based on the selection information, and can be selected without changing the processing on the image supply device side. Since the adjustment image relating to the window can be projected, a part of the window of the image supply device can be projected more easily and efficiently.

  Further, according to the present invention, the projector or the like can identify the horizontal length of the selected window, and projects the adjusted image according to the horizontal length and the projection aspect ratio. Therefore, it is not necessary to acquire the entire image data of the original window or to change the window according to the aspect ratio, so that a part of the window of the image supply device can be projected more easily and efficiently. be able to.

  The image information generation unit determines a region that satisfies the aspect ratio with reference to a horizontal length of a window that is determined to be selected by the determination unit, and the adjustment image is configured by the region. As described above, the image information may be generated.

  According to this, since the projector or the like can project the adjusted image using only the area that satisfies the aspect ratio, it is not necessary to deform the window in accordance with the aspect ratio, so that the image supply can be performed more easily and efficiently. Some windows of the device can be projected.

The storage unit stores lower end pattern data for identifying the lower end of the window,
The window identifying unit identifies the vertical length of each window based on the position of the window and the bottom pattern data,
The image information generation unit, based on the horizontal length of the window determined to be selected by the determination unit based on the horizontal length, the vertical length, and the aspect ratio. If the vertical direction of the image does not satisfy the aspect ratio, the image information may be generated so that the adjusted image is projected at the aspect ratio by replacing the image of the lacking portion with an image different from the original image. .

  According to this, the projector or the like can prevent the original image portion other than the window from being displayed by replacing the portion that does not satisfy the aspect ratio with an image different from the original image. Thereby, the projector or the like can prevent display of unnecessary images without deteriorating operability.

The left end pattern data is different for each application,
The projector may include an update unit that updates the left end pattern data.

  According to this, the projector or the like can appropriately identify the window of the new application even when the new application is used on the image supply device side.

In addition, the projector includes a control information output unit that outputs control information for activating the window determined to be selected by the determination unit to the image supply device,
The image signal input unit may input the image signal in a state where the window is active in the image supply device.

  According to this, the projector or the like inputs the image signal in a state in which the window selected on the image supply device side is activated, for example, when a plurality of windows are overlapped, the selected window is maximized. An image signal can be input in the state of being in front. Accordingly, since the projector or the like can project the entire selected window without performing special processing such as capturing image data of the entire selected window, the selected window can be simplified. And it can project efficiently.

  Hereinafter, an example in which the present invention is applied to a projector will be described with reference to the drawings. In addition, the Example shown below does not limit the content of the invention described in the claim at all. In addition, all of the configurations shown in the following embodiments are not necessarily essential as means for solving the problems described in the claims.

  FIG. 1A is a diagram showing an original image 300 displayed by a PC, and FIG. 1B is a diagram showing an image 400 projected by a conventional projector.

  It is assumed that an image signal is output from a PC (Personal Computer) to a projector, and an image is displayed on the screen of the PC and the projection target screen.

  In an original image 300 displayed on a PC (Personal Computer), a window 301, a window 302, and a window 303 are displayed.

  In this state, when an image signal is output from the PC to the projector, the same image 400 as the original image 300 is displayed on the screen.

  For example, when the presenter wants to display only the window 303 on the screen, in the conventional method, it is necessary to maximize the window 303 and output an image signal from the PC to the projector. In addition, after the window 303 is maximized, restoring the original state or maximizing another window 301 is a troublesome task for the presenter.

  FIG. 2 is a diagram illustrating an adjustment image 410 projected by the projector according to the present embodiment.

  As shown in FIG. 2, when the window 303 is selected, the projector of this embodiment projects an adjustment image 410 obtained by enlarging the window 303 with the projector's aspect ratio.

  Next, a functional block of the projector for implementing such a function will be described.

  FIG. 3 is a functional block diagram of the projector in the present embodiment.

  The projector 10 includes an image signal input unit 110 that inputs an image signal from a PC 20 that is a kind of an image supply device, a selection information input unit 120 that inputs window selection information, a storage unit 130, and at least included in the original image. A window identifying unit 150 that identifies the position and horizontal length of one window, a determination unit 180 that determines which window has been selected based on selection information, an image signal, and a determination that the selection unit 180 has selected An image information generation unit 170 that generates image information for projecting the adjustment image 410 based on the position of the window and the horizontal length, and a projection unit 180 that projects the adjustment image 410 based on the image information. It is comprised including.

  The storage unit 130 also includes left edge pattern data 132 for identifying the left edge of the window, right edge pattern data 134 for identifying the right edge of the window, lower edge pattern data 136 for identifying the lower edge of the window, and the position of each window. The window data 138 indicating the length and the like are stored. The left end pattern data 132 is image data for identifying marks unique to each application such as “A”, “B”, and “C” in the upper left of the windows 301 to 303. The right end pattern data 134 is image data for identifying a mark common to each application such as “x” in the upper right of the windows 301 to 303. The lower end pattern data 136 is image data for identifying a common part of each application such as a so-called status bar below the windows 301 to 303.

  Projector 10 also includes an update unit 140 that updates left end pattern data 132 and a control information output unit 190 that outputs control information for activating a window determined to be selected by determination unit 160 to PC 20. It consists of

  Note that the following can be employed as hardware for mounting these components. For example, the image signal input unit 110 is a signal input terminal, a video decoder, the selection information input unit 120 is an infrared port for inputting operation information from a remote controller, the storage unit 130 is a flash ROM, HDD, etc. Unit 140, window identification unit 150, determination unit 160, control information output unit 190, CPU, etc., image information generation unit 170, CPU, image processing circuit, scaling circuit, etc., projection unit 180 stores liquid crystal panel, driver, etc. It is possible to adopt a ROM or the like.

  The connection between the PC 20 and the projector 10 may be wired such as a USB cable, or may be wireless such as a wireless LAN.

  Further, the projector 10 may implement functions such as the window identification unit 150 by reading a program from the information storage medium 200.

  As the information storage medium 200, for example, a CD-ROM, DVD-ROM, IC card, ROM, RAM, memory card, HDD, or other storage medium using laser or magnetism can be applied. Further, the method of reading the program from the information storage medium 200 may be a contact type or a non-contact type. Further, the projector 10 may implement functions such as the window identification unit 150 by downloading a program via a network.

  Next, the flow of processing using these units will be described.

  FIG. 4 is a flowchart showing the flow of processing from the input of the image signal to the projection of the adjusted image in the present embodiment.

  The image signal input unit 110 inputs an image signal for one image from the PC 20 (step S1), and the update unit 140 stores the image signal in the storage unit 130 as image data for one image.

  The window identifying unit 150 searches the image data in units of blocks from the upper left to the lower right of the image (step S2). This block is adjusted to the size of marks such as “A” and “x” in the windows 301 to 303, and is composed of, for example, several vertical pixels and several horizontal pixels. The block may be adjusted according to the resolution of the PC 20.

  The window identifying unit 150 determines whether the comparison target block matches the left end pattern data 132 (step S3). Note that the left end pattern data 132, the right end pattern data 134, and the lower end pattern data 136 may have a size that matches, for example, the size of a search unit block. In addition, since the left end pattern data 132 is provided for each application, the window identification unit 150 performs comparison with all the left end pattern data 132.

  When the comparison target block matches the left end pattern data 132, the update unit 140 sets the position of the matched block to the left end position (for example, when the horizontal coordinate is x and the vertical coordinate is y, (x, (y) = (x1, y1)) is stored in the window data 138 (step S4). Note that the update unit 140 may add window identification information (for example, 0001) to the left end position.

  On the other hand, when the comparison target block does not match the left end pattern data 132, the window identifying unit 150 determines whether or not the comparison target block matches the right end pattern data 134 (step S5).

  When the comparison target block matches the right end pattern data 134, the updating unit 140 stores the position of the matched block in the window data 138 as the right end position (for example, (x, y) = (x2, y1)) ( Step S6). Note that the update unit 140 may add window identification information to the right end position when the left end position of the target window is not stored with reference to the window data 138. When the left end position of the window is stored, the window identification information, the left end position, and the right end position are associated with each other and stored in the window data 138.

  Next, the window identification unit 150 determines whether or not the search for one line of the image data has been completed (step S7).

  If the search for one line is not completed, the projector 10 executes the processes of steps S2 to S7 for the right block.

  On the other hand, when the search for one line is completed, the window identifying unit 150 determines whether or not the search for all the blocks is completed (step S8).

  If the search for all the blocks has not been completed, the projector 10 executes window processing (step S9), changes the search target to the next line (step S10), and executes the processing after step S2.

  Here, the window processing will be described.

  FIG. 5 is a flowchart showing the flow of window processing in the present embodiment.

  The window identifying unit 150 refers to the window data 138 to determine whether or not the left end position of the target window has been stored (step S21).

  If the left end position is not stored, the window identifying unit 150 refers to the window data 138 to determine whether the right end position of the target window has been stored (step S22).

  When the right end position of the target window has been stored, the update unit 140 stores the left end of the search target line in the window data 138 as the left end position (step S23). As a result, the projector 10 can appropriately project the adjustment image with respect to the visible portion even when the left side of the target window is out of the frame of the image.

  If the left end position has been stored, the window identifying unit 150 refers to the window data 138 to determine whether the right end position of the target window has been stored (step S24).

  When the right end position of the target window is not stored, the update unit 140 stores the right end of the search target line in the window data 138 as the right end position (step S25). As a result, the projector 10 can appropriately project the adjusted image for the visible portion even when the right side of the target window is out of the frame of the image.

  On the other hand, when the right end position of the target window has already been stored, the window identifying unit 150 obtains a width (horizontal length, for example, x2-x1) based on the left end position and the right end position, and the update unit 140 The width data indicating the width is stored in the window data 138 (step S26).

  Then, the window identification unit 150 obtains a midpoint (an intermediate position between the left end position and the right end position, for example, (x, y) = ((x2-x1) / 2, y1)) based on the left end position and the right end position. The block matching the lower end pattern data 136 is searched from the middle point to the lower side, and the length from the middle point to the matched block, or the length from the middle point to the lower end of the window if not matched (in the vertical direction) (Length). The update unit 140 stores the length data indicating the length in the window data 138 (step S27). For example, when the coordinates of the lower end position are (x, y) = ((x2-x1) / 2, y2)), the length is y2-y1.

  When the left end position and the right end position of the target window are not stored, or after the process of step S27 is completed, the projector 10 ends the window process and returns.

  When the search of all blocks is completed by the above procedure, the determination unit 160 determines the selected window based on the selection information input by the selection information input unit 120 and selects the data of the window from the window data 138. (Step S11).

  The image information generation unit 170 refers to the window data 138 according to the determination result of the determination unit 160 to determine the width: length ratio of the window based on the width data and length data of the selected window, The ratio is compared with an aspect ratio for projection (for example, 4: 3, 16: 9, etc.). Then, the image information generation unit 170 generates image information for projecting the adjusted image according to the image signal, the left end position of the window, and the comparison result (step S12).

  More specifically, the image information generation unit 170 determines that the shortage portion is insufficient when the vertical length does not satisfy the aspect ratio with respect to the horizontal length of the window, that is, when the vertical length is insufficient. The image information is generated so that the adjusted image is projected with the projection aspect ratio by replacing the image of the above with an image different from the original image.

  FIG. 6 is a diagram illustrating the adjustment image 412 when the vertical length is insufficient in the present embodiment.

  For example, when the window 301 is selected with an aspect ratio of 4: 3, the window 301 is horizontally long compared to the aspect ratio. Therefore, the image information generation unit 170 outside the window when the window width is enlarged based on the window width. The image information for projecting the adjustment image 412 showing the portion in black is generated. More specifically, for example, when the upper left coordinate of the window 301 is (x1, y1), the upper right coordinate is (x2, y1), and the lower left coordinate is (x1, y2), the hatched line shown in FIG. The area (black part) has an upper left coordinate of (x1, y2), an upper right coordinate of (x2, y2), a lower left coordinate of (x1, (x2-x1) * 3/4), and a lower right coordinate of (x2, (x2-x1) * 3/4).

  In addition, the image information generation unit 170 may project the image information so that the adjusted image is projected only in a region that satisfies the aspect ratio when the vertical length is longer than the aspect ratio with reference to the horizontal length of the window. Is generated.

  FIG. 7 is a diagram illustrating the adjustment image 414 when the vertical length is excessive in this embodiment.

  For example, when the aspect ratio is 4: 3 and the window 302 is selected, the window 302 is longer than the aspect ratio. Therefore, the image information generation unit 170 increases the aspect ratio when the window width is enlarged. Image information for projecting the adjusted image 414 composed only of the region that satisfies the condition is generated. In this case, a region outside the region satisfying the aspect ratio in the window 302 (region surrounded by a two-dot chain line in FIG. 7) is not displayed.

  More specifically, for example, when the upper left coordinate of the window 301 is (x1, y1), the upper right coordinate is (x2, y1), and the lower left coordinate is (x1, y2), the area actually displayed The upper left coordinates are (x1, y1), the upper right coordinates are (x2, y1), the lower left coordinates are (x1, (x2-x1) * 3/4), and the lower right coordinates are (x2, (x2 -x1) * 3/4).

  Then, the projection unit 180 projects the adjustment images 410 to 414 based on the image information generated by the above procedure (step S13).

  As described above, according to the present embodiment, the projector 10 can identify each window based on the left end pattern data 132 and the like, can determine which window has been selected based on the selection information, and changes the processing on the PC 20 side. Without adjustment, the adjustment images 410 to 414 related to the selected window can be projected, so that some windows of the PC 20 can be projected more easily and efficiently.

  Further, according to the present embodiment, the projector 10 can identify the horizontal length of the selected window, and the adjusted images 410 to 414 according to the horizontal length and the projection aspect ratio. Since it is not necessary to acquire the entire image data of the original windows 301 to 303 or to deform the windows 301 to 303 in accordance with the aspect ratio, the PC 20 can be projected more simply and efficiently. Some windows can be projected.

  Therefore, by using the projector 10 according to the present embodiment, the presenter can select a desired window from the plurality of windows 301 to 303 and perform simple and efficient enlargement projection, and easily switch the projection window. be able to.

  Further, as shown in FIG. 7, the projector 10 projects the adjustment image 414 more easily and efficiently because it does not need to deform the window by not projecting the area that does not satisfy the aspect ratio among the areas of the window. it can.

  As shown in FIG. 6, the projector 10 can prevent the original image portion other than the window from being displayed by replacing the portion that does not satisfy the aspect ratio with an image different from the original image. Thereby, the projector 10 can prevent display of unnecessary images such as desktop images without deteriorating operability.

  In addition, application of this invention is not limited to the Example mentioned above, A various deformation | transformation is possible.

  For example, the update unit 140 may update the left end pattern data 132 by a technique such as downloading via a network or input from the PC 20.

  According to this, the projector 10 can appropriately identify the window of the new application even when the new application is used on the PC 20 side.

  When at least one of the left and right edges of the window is not found in the image data for one image, the control information output unit 190 displays control information for activating the window determined to be selected by the determination unit 160. The image signal input unit 110 may output the image signal to the PC 20 and input the image signal in a state where the window is active in the PC 20.

  According to this, the projector 10 inputs the image signal in a state in which the window selected on the PC 20 side is activated. For example, when a plurality of windows are overlapped, the selected window is brought to the forefront. In this state, an image signal can be input. Accordingly, the projector 10 can project the entire selected window without performing a special process such as capturing image data of the entire selected window, so that the selected window can be simplified. And it can project efficiently.

  Further, the method of inputting the selection information is not limited to the button operation of the remote controller of the projector 10, but may be the button operation of the projector 10 main body, the operation on the PC 20, or the like.

  FIG. 8 is a diagram showing a cursor image 320 in the present embodiment. FIG. 9 is a diagram showing another cursor image 322 in the present embodiment.

  For example, an image 310 including an arrow-shaped cursor image 320 may be displayed on the screen of the PC 20, and the presenter may select the windows 301 to 303 by moving the cursor image 320 using the mouse of the PC 20 or the like.

  In addition, for example, an image 312 showing a list of applications displayed on the screen of the PC 20 is displayed, and the presenter moves the frame-shaped cursor image 322 using the mouse of the PC 20 or the like, so that the windows 301 to 303 are displayed. You may choose.

  The selection information input method may be based on a voice instruction. In this embodiment, the application type can be identified by the left end pattern data 132, and each window can be identified by the window data 138. For example, when the presenter gives a voice instruction “application A”, the selection information input unit 120 inputs voice information indicating the voice instruction, and the determination unit 160 determines that “application A” is selected based on the voice information. Then, the image information generation unit 170 may generate image information for projecting an adjusted image including at least a part of the window of “application A”.

  According to this, since the presenter can select and enlarge a desired application without performing a button operation, the presenter can make a presentation while switching a plurality of applications more easily and efficiently. That is, according to this, the presenter can display an enlarged window of the application by instructing the application instead of instructing the window.

  The selection information is not limited to information for selecting one window, and may be information for selecting a plurality of windows simultaneously. For example, when a plurality of windows are selected at the same time, the projector 10 projects the adjusted image in which the plurality of windows are arranged vertically and horizontally by executing the processing described with reference to FIGS. Can do.

  Further, the window identification information may be determined in order from the window on the image as 0001, 0002, and 0003, or may be determined in order from the window on the left of the image. That is, the window number at the time of selection may be associated with the identification information in the window data 138.

  Further, the processing order is not limited to the example shown in FIG. For example, after determining the selected window based on the selection information, the projector 10 may end the search process when the window is found.

  According to this, since the projector 10 does not need to search all the image data, the image processing can be executed more simply and efficiently.

  Further, the lower end pattern data 136 is not essential. For example, the image information generation unit 170 can generate image information for an adjusted image using an image signal of an area that satisfies the aspect ratio with reference to the window width, and the area that satisfies the aspect ratio protrudes outside the image. In this case, image information for an adjustment image that indicates the portion in black may be generated. In this case, the process of searching for the lower end (step S27) described above is not necessary.

  Also, the lower end pattern data 136 is not necessary when the edge detection method is adopted as the lower end determination method. However, by using the lower end pattern data 136 described above, the projector 10 can use the same block-based search method as the left end pattern data 132 and the right end pattern data 134, and therefore, compared with the case where the edge detection method or the like is used. The lower end can be determined more efficiently.

  Further, the method of searching for the lower end is not limited to the method of searching from the middle point to the bottom, and may be a method of searching from the upper left or the upper right to the lower, for example. In many cases, characters or marks are displayed at the left or right end of the lower end of the window. However, since there are often no characters or the like at the center of the lower end of the window, the projector 10 searches from the middle point to the bottom. Thus, the lower end can be determined more generally and appropriately.

  The projector to which the present invention is applicable is not limited to a front projection type projector, and may be a rear projection type projector. The projector is not limited to a liquid crystal projector, and may be a CRT projector, a DLP projector, an LED projector, or the like. A large TV or the like may be used.

  Further, the image supply device is not limited to the PC 20 and may be, for example, a PDA (Personal Digital Assistants), a TV, or the like.

FIG. 1A is a diagram showing an original image displayed by a PC, and FIG. 1B is a diagram showing an image projected by a conventional projector. It is a figure which shows the adjustment image which the projector in a present Example projects. It is a functional block diagram of the projector in a present Example. It is a flowchart which shows the flow of a process from the input of the image signal in this Example to the projection of an adjustment image. It is a flowchart which shows the flow of the window process in a present Example. It is a figure which shows the adjustment image when the length of the perpendicular direction in a present Example is insufficient. It is a figure which shows the adjustment image when the length of the vertical direction in a present Example remains. It is a figure which shows the cursor image in a present Example. It is a figure which shows the other cursor image in a present Example.

Explanation of symbols

  10 projector, 110 image signal input unit, 120 selection information input unit, 130 storage unit, 132 left end pattern data, 134 right end pattern data, 136 lower end pattern data, 138 window data, 140 update unit, 150 window identification unit, 160 determination unit , 170 Image information generation unit, 180 Projection unit, 190 Control information output unit, 200 Information storage medium, 301 to 303 Window, 410, 412, 414 Adjusted image

Claims (7)

An image signal input unit for inputting an image signal for displaying the image from an image supply device on which an image including a plurality of windows is displayed;
A selection information input unit for inputting selection information of at least one of the plurality of windows;
A storage unit for storing left end pattern data for identifying the left end of the window and right end pattern data for identifying the right end of the window;
A window identifying unit for identifying a position and a horizontal length of at least one window included in the image based on the image signal, the left end pattern data, and the right end pattern data;
A determination unit for determining which window is selected based on the selection information;
Based on the image signal and the position and horizontal length of the window determined to be selected by the determination unit, the image includes at least a part of the window and is adjusted to an aspect ratio for projection. An image information generation unit for generating image information for projecting an adjusted image that is a corrected image;
A projection unit that projects the adjusted image based on the image information;
Including a projector. The projector according to claim 1, wherein
The image information generation unit determines a region satisfying the aspect ratio with reference to a horizontal length of a window determined to be selected by the determination unit, and the adjustment image is configured by the region. A projector that generates the image information. The projector according to claim 1, wherein
The storage unit stores lower end pattern data for identifying the lower end of the window,
The window identifying unit identifies the vertical length of each window based on the position of the window and the bottom pattern data,
The image information generation unit, based on the horizontal length of the window determined to be selected by the determination unit based on the horizontal length, the vertical length, and the aspect ratio. When the vertical direction of the image does not satisfy the aspect ratio, the image information is generated so that the adjusted image is projected with the aspect ratio by replacing the image of the lacking portion with an image different from the original image. Projector. The projector according to any one of claims 1 to 3,
The left end pattern data is different for each application,
A projector comprising an updating unit for updating the left end pattern data. The projector according to any one of claims 1 to 4,
A control information output unit that outputs control information for activating the window determined to be selected by the determination unit to the image supply device;
The projector, wherein the image signal input unit inputs the image signal in a state where the window is active in the image supply device. A computer with a projector,
An image signal input unit for inputting an image signal for displaying the image from an image supply device on which an image including a plurality of windows is displayed;
A selection information input unit for inputting selection information of at least one of the plurality of windows;
Based on the image signal, left edge pattern data for identifying the left edge of the window, and right edge pattern data for identifying the right edge of the window, the position and horizontal direction of at least one window included in the image are determined. A window identifier for identifying the length;
A determination unit for determining which window is selected based on the selection information;
Based on the image signal and the position and horizontal length of the window determined to be selected by the determination unit, the image includes at least a part of the window and is adjusted to an aspect ratio for projection. A program that functions as an image information generation unit that generates image information for projecting an adjustment image, which is an adjusted image.   A computer-readable information storage medium storing the program according to claim 6.

Images