JP2008122800A - Image display device - Google Patents

Abstract

An image display device capable of appropriately determining the format of an image to be displayed according to an input image.
A projector (image display device) displays an input image, displays an area designating image representing a rectangular area having a first aspect ratio in a frame of bright lines on the input image (a), The specification of the rectangular area is accepted by determining the aspect ratio, position, and size of the area specifying image according to the instruction from the user (b), and the portion in the input image corresponding to the specified rectangular area is extracted and extracted A projection image (processed image) whose size is enlarged by projecting the aspect ratio of the portion to the second aspect ratio is projected.
[Selection] Figure 3

Description

  The present invention relates to an image display device such as a monitor that displays an image or a projector that projects an image, and more specifically, performs a process of setting a format of an image to be actually displayed with respect to various types of input images. The present invention relates to an image display device.

  As an image display device that displays an image based on an input image, in addition to a monitor such as a television receiver, there is a projector that enlarges and projects an image based on the input image onto a projection surface such as an external screen or a wall. It is used. Such a projector forms an image with a flat image forming panel made of a liquid crystal panel or DMD (Digital Micromirror Device) or the like, and reflects light reflected by the image forming panel on which the image is formed or light transmitted through the image forming panel. An image is projected by projecting onto an external projection surface.

  In general, various values are used for the aspect ratio of an image, and those having a horizontal: vertical ratio of 4: 3 and 16: 9 are often used in home-use images such as television broadcasting. ing. A conventional projector includes an image forming panel configured to have an aspect ratio of 4: 3 or 16: 9, and can be configured to project an image having any aspect ratio regardless of which image forming panel is included. There are many things that have been done. On the other hand, since the aspect ratio in NTSC television broadcasting is 4: 3, input images are often provided with an aspect ratio of 4: 3. For this reason, an image with an aspect ratio of 16: 9 is a squeeze-type input image obtained by compressing the image in the horizontal direction and transforming into an image with an aspect ratio of 4: 3, or a black frame is added to the top and bottom of the image to increase the aspect ratio. It may be provided as an input image in a letterbox format formed into a 4: 3 image. Since various input images may be input as described above, the projector needs to have a function of switching the format of the projection image according to the input image.

  FIG. 6 is a conceptual diagram showing correspondence examples between various input images input to the projector and various types of projection images projected by the projector. As an input image that can be input to the projector, an input image in 4: 3 format formed with an aspect ratio of 4: 3, an input image in squeeze format obtained by horizontally compressing an image with an aspect ratio of 16: 9, and an aspect ratio There is a letterbox input image in which black frames are added above and below the 16: 9 image. On the other hand, the format of the projection image projected by the projector includes a standard display for projecting while maintaining the aspect ratio of the input image, and an input image having an aspect ratio of 4: 3 is expanded in the horizontal direction to have an aspect ratio of 16 There are wide display for projecting an image set to: 9 and zoom display for enlarging an image with an aspect ratio of 16: 9 which is a part of an input image with an aspect ratio of 4: 3. FIG. 6 shows a projected image when an image is projected by a projector having an image forming panel with an aspect ratio of 16: 9. When projecting an image with an aspect ratio of 4: 3, both of the images are shown. A black frame is formed on the side.

  As shown in FIG. 6, standard display is suitable for 4: 3 format input images, wide display is suitable for squeeze format input images, and letterbox format input images. The zoom display is suitable. However, when a squeeze format input image is projected in the standard display, an image that is unnaturally stretched is projected, and when a letterbox format input image is projected in the standard format, the black frame increases and the image becomes smaller. Projected. When an input image in 4: 3 format and letterbox format is projected in a wide display, an image unnaturally extended to the left and right is projected. When an input image in the 4: 3 format and the squeeze format is projected in the zoom display, an enlarged image is projected after a part of the image is cut. As described above, since an unnatural image is projected when an inappropriate projection image format is selected for the input image, it is necessary to select an appropriate projection image format according to the input image.

Patent Documents 1 to 3 disclose a technique using an optical zoom as a technique for changing the format of a projected image by enlarging or reducing the projected image. Many projectors in recent years also use an electronic zoom that enlarges / reduces a projected image by processing an image formed by an image forming panel. In conventional projectors, it is difficult to automatically select an appropriate projection image format. Therefore, images obtained by processing the input image into each format are projected in order, and an appropriate projection image format that matches the input image is selected. Many things are done by the user. For example, when a 4: 3 format input image is input, the projector sequentially projects the 4: 3 format image into the standard display, wide display, and zoom display formats as shown in FIG. Then, the user selects a standard display on which an appropriate image is projected. Some monitors, such as television receivers, can display multiple types of images and have a function that allows the user to select the display image format. The display image format is automatically selected according to the input image. There are some to choose.
JP-A-5-323451 JP-A-11-95324 JP 2002-72354 A

  The format of the input image and the projection image shown in FIG. 6 is an example, and other types of images are also used, and the format of the input image and the projection image that should be supported by the projector continues to increase. It is. Therefore, when the user selects the format of the projected image, it is necessary to select an image of one format from among the various types of images projected in order, and the user selects the format of the projected image. There is a problem that the work to do is complicated. In addition, there is a problem that it is difficult for the user to determine which format is appropriate from among many types of projection images. In addition, there is a problem that a monitor that automatically selects a display image format according to an input image may select an inappropriate display image format in some cases.

  The present invention has been made in view of such circumstances, and an object of the present invention is to visually specify which part of an area included in an input image should be displayed. Accordingly, an object of the present invention is to provide an image display device capable of appropriately determining the format of an image to be displayed.

  The image display device according to the present invention is an image display device that displays a processed image obtained by processing an input image. The image display device has a first aspect at an arbitrary position on the input image displayed by the means for displaying the input image. A receiving unit that accepts designation of a rectangular region having an arbitrary ratio having a ratio; and a portion corresponding to the rectangular region that is included in an input image that is input after the designation unit accepts designation of the rectangular region. And generating means for generating a processed image by changing the aspect ratio of the portion to a second aspect ratio and changing the size of the portion to a predetermined size.

  The image display device according to the present invention includes means for displaying an area designating image representing a rectangular area having a first aspect ratio superimposed on the displayed input image, and the area designating image displayed by the means. Means for changing the position and / or size on the input image, wherein the accepting means accepts an instruction for determining the position and size of the area designating image, thereby allowing the region designating on the input image. It has a means to receive designation | designated of the rectangular area which an image represents.

  The image display apparatus according to the present invention further includes means for changing the first aspect ratio.

  The image display apparatus according to the present invention is characterized in that the generating means includes means for changing a second aspect ratio.

  The image display device according to the present invention is a projector that displays an image by projecting the image.

  In the present invention, the image display device (projector) displays an input image, accepts designation of a rectangular area having a first aspect ratio on the input image, and a portion in the input image corresponding to the designated rectangular area The processed image whose size has been extracted and extracted is displayed at the second aspect ratio. Regardless of the format of the input image, a portion corresponding to the designated rectangular area is displayed as a processed image.

  Further, in the present invention, the image display device displays an area designating image representing a rectangular area with a bright line frame or a bright spot on the input image, and in accordance with an instruction from the user, The designation of the rectangular area is accepted by changing the size and determining the position and size of the area designation image in accordance with an instruction from the user.

  In the present invention, the image display apparatus accepts designation of rectangular areas having various aspect ratios by changing the first aspect ratio, which is the aspect ratio of the area designation image, in accordance with an instruction from the user. Can do. The image display apparatus can accept the designation of the rectangular area with a first aspect ratio that is different from the second aspect ratio, which is the aspect ratio of the processed image to be displayed, and corresponds to the rectangular area of the input image. The aspect ratio of the portion is processed to the second aspect ratio and then displayed as a processed image.

  Furthermore, in the present invention, the image display apparatus can display an image with an appropriate aspect ratio by changing the second aspect ratio, which is the aspect ratio of the processed image, in accordance with an instruction from the user.

  In the present invention, the image display device (projector) accepts designation of a rectangular area on the input image regardless of the format of the input image, such as an image including a black frame as in the letterbox format. As a result, it is possible to enlarge and display a portion to be displayed in the area included in the input image.

  In the present invention, the user can visually determine which part of the input image should be displayed, such as the whole or a part, and specify the area to be displayed. The format of the displayed image can be determined. Therefore, it is possible to reliably determine an appropriate display image format suitable for the input image without performing a complicated operation of selecting a display image of one format from among various types of display images.

  In the present invention, the image display device changes the first aspect ratio in accordance with an instruction from the user, so that even if the area to be displayed in the input image has various aspect ratios. The processed image in which the area is enlarged can be displayed. Therefore, the user can reliably determine the display image format suitable for the input image for various types of input images. Even if the input image is an image whose aspect ratio is changed from its original value, such as a squeeze format, the image display device can display a processed image in which the aspect ratio of the area to be displayed is appropriately processed. Therefore, the user can reliably select an appropriate display image format in which the aspect ratio is changed in accordance with the input image without performing an operation of selecting one display image from various display images. It can be determined.

  Further, in the present invention, the image display device of the present invention can display an image with an appropriate aspect ratio on the input image by changing the second aspect ratio in accordance with an instruction from the user. The present invention has an excellent effect.

Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
(Embodiment 1)
In the first embodiment, a mode in which the image display device of the present invention is a projector will be described. FIG. 1 is a block diagram showing an internal functional configuration of a projector which is an image display apparatus of the present invention. The projector 1 includes a control processing unit 11 including a processor that performs a calculation, various information associated with the calculation, and a ROM that stores a control program. The control processing unit 11 performs processing for controlling the overall operation of the projector 1. The control processing unit 11 includes a remote control receiving unit 16 that receives a signal transmitted from the remote controller (remote controller) 10 operated by the user using infrared rays or radio waves, and various switches. An operation unit 17 that receives processing instructions is connected. The control processing unit 11 is configured to receive various processing instructions at the remote control receiving unit 16 or the operation unit 17 and execute processing according to the received processing instructions. The remote control receiving unit 16 and the operation unit 17 correspond to a receiving unit in the present invention.

  The projector 1 also includes a light source 21 composed of a discharge lamp or LED, and a planar image forming panel 22 composed of a liquid crystal panel, DMD, or the like. The image forming panel 22 has a plurality of pixels using liquid crystal or a micromirror, and is configured to form an image with a predetermined resolution defined by the number of pixels. The projector 1 is configured to irradiate the image forming panel 22 with light from the light source 21 using an optical system (not shown). Further, the projector 1 is irradiated to the image forming panel 22 on which an image has been formed. A projection lens 23 for projecting the light reflected at the outside. A white arrow in FIG. 1 indicates light. The light projected from the projection lens 23 is projected onto a projection surface such as a screen or a wall outside the projector 1, and a projection image is projected onto the screen surface. The projector 1 may be configured to project a projection image by projecting light that has passed through the image forming panel 22 on which an image has been formed, with a projection lens 23.

  The projector 1 also includes an input unit 13 for inputting an input image from an external device such as an optical disk device, a television tuner, or a PC. Connected to the input unit 13 is an image processing unit 14 that performs processing such as part extraction, aspect ratio change, resolution conversion, deformation, and size change on the input image. Connected to the image processing unit 14 is an image generation unit 15 that generates an image obtained by processing the input image by the image processing unit 14. The image generating unit 15 is connected to the image forming panel 22, and the image forming panel 22 is configured to form an image generated by the image generating unit 15. The image processing unit 14 and the image generation unit 15 correspond to generation means in the present invention. Note that the image processing unit 14 and the image generation unit 15 may be configured by a single arithmetic circuit capable of executing the processing to be performed by these.

  The image generation unit 15 is connected to an OSD image generation unit 12 that generates an OSD (on-screen display) image to be projected on the projection image. The image generation unit 15 is configured to generate an image in which the image processed by the image processing unit 14 is combined with the OSD image generated by the OSD image generation unit 12. The projector 1 can project an OSD image so as to be superimposed on a projection image by the image generation unit 15 generating an image including an OSD image and forming the image forming panel 22. The OSD image generation unit 12, the image processing unit 14, and the image generation unit 15 are connected to the control processing unit 11 and operate according to control by the control processing unit 11. With the above configuration, the projector 1 can project a projection image obtained by processing an input image input from the outside.

  Next, processing executed by the projector 1 of the present invention having the above configuration will be described. The projector 1 according to the present invention is configured to receive a designation of a rectangular area to be projected as an image within an area included in an input image, and to execute a process for setting the format of the projected image. FIG. 2 is a flowchart showing a procedure of processing in which the projector 1 sets the format of the projected image. In a state in which an input image is input from the outside to the input unit 13, the control processing unit 11 of the projector 1 performs a predetermined operation on the operation unit 17 by the user or a predetermined operation on the remote controller 10 by the user. The remote control receiving unit 16 receives a predetermined signal transmitted by the remote controller 10 and waits for reception of a setting instruction (S1). When the setting instruction is not received (S1: NO), the control processing unit 11 continues to wait for the setting instruction reception while projecting the projection image in a format according to the setting at that time.

  When a setting instruction is received in step S1 (S1: YES), the control processing unit 11 causes the image generation unit 15 to generate an image including all the regions in the input image, and the generated image is displayed on the image forming panel 22. The input image is projected by projecting the light formed and reflected by the image forming panel 22 from the projection lens 23 (S2). At this time, the image processing processing unit 14 maintains the aspect ratio of the input image, and adjusts the size of the input image so that the input image fits within the maximum range that the image forming panel 22 can form for the projected image. I do. Thereby, the input image is projected on a projection surface with a size smaller than the maximum projection range in which the projector 1 can project an image.

  Next, the control processing unit 11 causes the OSD image generation unit 12 to generate an area designating image including a rectangular frame having a predetermined aspect ratio (first aspect ratio), and causes the image generation unit 15 to input the input image and the area. An image synthesized with the designating image is generated, the generated image is formed on the image forming panel 22, and the light reflected by the image forming panel 22 is projected from the projection lens 23, so that the region designation is superimposed on the input image. Project images are projected (S3).

  FIG. 3 is a schematic diagram showing an example of an image projected during the process of setting the format of the projected image when the input image is in the letterbox format. FIG. 3A shows a state in which an area designating image is projected on the input image. In the drawing, the projection range in which the projector 1 can project an image is indicated by a broken line, and the input image is projected with a size smaller than the projection range. In addition, because the input image is projected without any extraction or modification of the aspect ratio, black frames are added to the top and bottom of the image with an aspect ratio of 16: 9, resulting in an aspect ratio of 4: 3. The original input image is projected. An area designating image made up of a rectangular frame represents a rectangular area included in the input image by being projected onto the input image. The area designating image is desirably projected with bright lines or primary colors brighter than the input image. FIG. 3 shows an area designating image with an aspect ratio of 16: 9. The shape of the region designating image is not limited to a rectangular frame, and may be any other shape as long as it can represent a rectangular region, such as bright spots representing the four corners of the rectangular region.

  Next, the control processing unit 11 waits for reception of an instruction to change the aspect ratio of the area designating image when the user operates the operation unit 17 or the remote controller 10 (S4). When the operation unit 17 or the remote control receiving unit 16 receives an instruction to change the aspect ratio (S4: YES), the control processing unit 11 changes the aspect ratio of the region designating image to be generated by the OSD image generation unit 12. Thus, the aspect ratio of the area designating image that overlaps the input image is changed (S5).

  After step S5 is completed, or when no aspect ratio change instruction is received in step S4 (S4: NO), the control processing unit 11 is a region generated by the user operating the operation unit 17 or the remote controller 10. Waiting for an instruction to change the position / size of the designated image (S6). The user inputs an instruction to change the position / size of the area designation image by operating a cursor key or the like provided on the operation unit 17 or the remote controller 10. When the operation unit 17 or the remote control receiving unit 16 receives a position / size change instruction (S6: YES), the control processing unit 11 changes the position / size of the region designating image to be generated by the OSD image generation unit 12. By doing so, the position and size of the area designating image on the input image are changed (S7).

  After step S7 is completed, or when no position / size change instruction is received in step S6 (S6: NO), the control processing unit 11 determines to determine the aspect ratio, position, and size of the region designating image. Waiting for an instruction (S8). When the determination instruction is not received (S8: NO), the control processing unit 11 returns the process to step S4 and waits for an instruction to change the aspect ratio, position, and size of the area designating image.

  FIG. 3B shows an area designating image whose position and size are changed on the input image. By enlarging the size of the area designating image with an aspect ratio of 16: 9 and appropriately adjusting the position on the input image, the image of the image with an aspect ratio of 16: 9 included in the input image in the letterbox format is used. The part can be designated as a rectangular area.

  When the determination instruction is received by the operation unit 17 or the remote control reception unit 16 in step S8 (S8: YES), the control processing unit 11 is included in the input image by determining the aspect ratio, position, and size of the region designating image. The image processing unit 14 extracts a portion corresponding to the designated rectangular area from the input image and receives the designation of the rectangular area to be projected as a projected image in the projected image. The image generation unit 15 is caused to generate an image enlarged to the maximum range size that can be formed (S9). At this time, the image processing unit 14 sets the aspect ratio of the portion in the input image corresponding to the designated rectangular area to a predetermined aspect ratio (second aspect ratio) that matches the shape of the image forming panel 22. The image forming panel 22 performs image processing for enlarging the size to the maximum range where an image can be formed. Next, the control processing unit 11 forms the generated image on the image forming panel 22, and projects the light reflected by the image forming panel 22 from the projection lens 23, thereby expanding the rectangular area in the input image. The image is projected (S10), and the process for setting the format of the projected image is terminated. The projector 1 stores the setting content, and after the process of setting the format of the projection image is completed, the image corresponding to the designated rectangular area is extracted from the input image input to the input unit 13 and enlarged. Is generated by the image generation unit 15 and an image is projected. The image thus projected corresponds to the processed image in the present invention.

  FIG. 3C shows a projection image obtained by enlarging a rectangular area in the input image. Among the portions included in the input image, the rectangular area designated by the area designating image is expanded to the entire projection range of the projector 1. Since the image forming panel 22 is configured with an aspect ratio of 16: 9, the aspect ratio of the projection range of the projector 1 is 16: 9, and finally the projected image is projected with an aspect ratio of 16: 9.

  As shown in FIG. 3, even if the input image is in the letterbox format, by designating a region to be projected as the projection image, the image portion excluding the black frame portion is projected as the projection image. It becomes possible. That is, the user visually determines which part of the input image, such as the whole or a part, is to be projected as a projection image, and designates a region to be projected, whereby a projection image suitable for the input image is obtained. The form of can be determined. Therefore, it is possible to reliably determine an appropriate projection image format suitable for the input image without performing a complicated operation of selecting a projection image of one format from among various types of projection images.

  FIG. 4 is a schematic diagram illustrating an example of an image projected during the process of setting the format of the projected image when the input image is in the squeeze format. FIG. 4A shows an example in which an input image in a squeeze format and an area designating image with an aspect ratio of 16: 9 are projected. Since the squeeze format input image has an aspect ratio of 4: 3, it is not possible to specify all the parts to be projected in the 16: 9 region designating image. The projector 1 according to the present invention can change the aspect ratio of the region designating image from 16: 9 to 4: 3 in the process of step S5. FIG. 4B shows an area designating image with the aspect ratio changed to 4: 3. The entire input image is designated as a rectangular area. FIG. 4C shows a projected image. Since the projector 1 projects a projection image with an aspect ratio of 16: 9 in accordance with the aspect ratio of the image forming panel 22, a projection image of an appropriate format obtained by expanding a squeeze format input image in the horizontal direction is projected.

  As shown in FIG. 4, the projector 1 changes the aspect ratio (first aspect ratio) of the area designating image so that the area to be projected in the input image has various aspect ratios. However, it is possible to appropriately specify a region to be projected and to enlarge and project the projected image. Therefore, the user can reliably determine the projection format of the projection image suitable for the input image for various types of input images. Further, the projector 1 of the present invention can accept designation of a part having an aspect ratio different from the aspect ratio of the projection range, and projects the designated part after shaping the aspect ratio of the projection range. Even if the input image is an image in which the aspect ratio is changed from the original value, such as a squeeze format, an image in which the aspect ratio of the region to be projected is appropriate can be projected. Therefore, it is possible to reliably determine an appropriate projection image format in which the aspect ratio is changed in accordance with the input image without performing the operation of selecting one of the projection images from various types. It becomes.

  In the present embodiment, a mode is shown in which an image enlarged to the maximum projection range is projected after a portion to be projected included in the input image has a predetermined aspect ratio that matches the shape of the image forming panel 22. However, the form of the projector 1 which is the image display device of the present invention is not limited to this. For example, the projector 1 may be configured to project a projection image with a size other than the maximum projection range.

  The projector 1 may be configured to be able to change the aspect ratio (second aspect ratio) of the projected image to an aspect ratio other than a value that matches the shape of the image forming panel 22. When the aspect ratio of the image forming panel 22 is 16: 9 and the input image is in the standard format, even if the entire input image is appropriately specified, the projected image that is unnaturally stretched in the horizontal direction is displayed. It will be projected. The projector 1 performs a process of changing the aspect ratio of the projected image in accordance with an instruction from the user, thereby projecting an input image in a standard format as a projected image having an aspect ratio of 4: 3. Can project a projected image.

  In the present embodiment, the embodiment using 4: 3 or 16: 9 as the specific value of the first and second aspect ratios is shown. However, the present invention is not limited to this, and the aspect of the present invention is not limited thereto. Other values such as 14: 9 can be used as the ratio value.

  Further, in the present embodiment, the projector 1 of the present invention has shown a front projection system in which an image is projected onto an external projection surface such as a screen or a wall. However, the present invention is not limited to this. A rear projection system may be used in which a transmissive screen (not shown) is provided and light is projected from the back surface of the screen by the projection lens 23 to project an image on the screen.

(Embodiment 2)
In Embodiment 2, a mode in which the image display device of the present invention is a monitor such as a television receiver will be described. FIG. 5 is a block diagram showing an internal functional configuration of a monitor which is an image display device of the present invention. The monitor 3 includes a control processing unit 31 including a processor that performs a calculation, various information associated with the calculation, and a ROM that stores a control program. The control processing unit 31 performs processing for controlling the operation of the entire monitor 3. The control processing unit 31 includes a remote control receiving unit 36 that receives a signal transmitted from the remote control 30 operated by the user using infrared rays or radio waves, and various switches, and receives various processing instructions by the operation of the user. An operation unit 37 is connected. The control processing unit 31 is configured to receive various processing instructions by the remote control receiving unit 36 or the operation unit 37 and execute processing according to the received processing instructions.

  The monitor 3 includes an input unit 33 and a tuner 38 for inputting an input image from an external device such as an optical disk device, a set top box, or a PC. The input unit 33 and the tuner 38 are connected to an image processing unit 34 that processes the input image. The image processing unit 34 processed the input image. An image generation unit 35 that generates an image is connected. The image generation unit 35 is connected to an image display unit 39 that is an image display device such as a liquid crystal display panel or a plasma display panel. The image display unit 39 is configured to form an image generated by the image generation unit 35.

  The image generation unit 35 is connected to an OSD image generation unit 32 that generates an OSD image to be displayed over the display image. The image generation unit 35 is configured to generate an image obtained by combining the image obtained by processing the input image by the image processing unit 34 and the OSD image generated by the OSD image generation unit 32. The monitor 3 can display an OSD image superimposed on the display image by generating an image including an OSD image by the image generation unit 35 and forming the image display unit 39. The OSD image generation unit 32, the image processing unit 34, and the image generation unit 35 are connected to the control processing unit 31 and operate according to control by the control processing unit 31. With the above configuration, the monitor 3 can display a display image obtained by processing the input image input by the input unit 33 or the tuner 38.

  The monitor 3 that is the image display device of the present invention performs the same processing as the projector 1 described in the first embodiment, receives designation of a rectangular area to be displayed as a display image on the input image, and displays the format of the display image. Can be executed. That is, similar to the processing shown in the flowchart of FIG. 2, the monitor 3 displays the input image, displays the area designation image on the input image, and determines the aspect ratio, position, and size of the area designation image. By doing so, the specification of the rectangular area included in the input image is received, the portion in the input image corresponding to the specified rectangular area is extracted, and the enlarged image is displayed in the display range of the image display unit 39. . The image displayed in this way corresponds to the processed image in the present invention.

  As described above, even on the monitor 3 such as a television receiver, the user visually determines which part of the input image should be displayed in whole or in part, and designates the area to be displayed. Thus, the format of the display image suitable for the input image can be determined. Therefore, the monitor 3 can reliably determine an appropriate display format suitable for the input image without selecting an inappropriate display image format.

It is a block diagram which shows the function structure inside the projector which is an image display apparatus of this invention. It is a flowchart which shows the procedure of the process which a projector sets the format of a projection image. FIG. 10 is a schematic diagram illustrating an example of an image that is projected during a process of setting a format of a projected image when an input image is in a letterbox format. It is a schematic diagram which shows the example of the image projected during the process which sets the format of a projection image, when an input image is a squeeze format. It is a block diagram which shows the function structure inside the monitor which is an image display apparatus of this invention. It is a conceptual diagram which shows the example of a response | compatibility with the various input images input into a projector, and the various types of projection images which a projector projects.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projector 11, 31 Control processing part 12, 32 OSD image generation part 13, 33 Input part 14, 34 Image processing part 15, 35 Image generation part 16, 36 Remote control receiving part 17, 37 Operation part 22 Image formation panel 3 Monitor 39 Image display

Claims (5)

In an image display device that displays a processed image obtained by processing an input image,
Means for displaying the input image;
Accepting means for accepting designation of a rectangular area of any size having the first aspect ratio at an arbitrary position on the input image displayed by the means;
The part corresponding to the rectangular area included in the input image input after receiving the designation of the rectangular area by the receiving means is extracted from the input image, and the aspect ratio of the part is set to the second aspect ratio, An image display device comprising: generating means for generating a processed image by changing the size of the portion to a predetermined size. Means for displaying an area designating image representing a rectangular area having a first aspect ratio superimposed on the displayed input image;
Means for changing the position and / or size of the area designating image displayed by the means on the input image;
The accepting means is
The image according to claim 1, further comprising means for receiving a designation of a rectangular area represented by the area designation image on an input image by receiving an instruction for determining a position and a size of the area designation image. Display device.   The image display apparatus according to claim 2, further comprising means for changing the first aspect ratio. The generating means includes
4. The image display device according to claim 1, further comprising means for changing the second aspect ratio.   The image display device according to claim 1, wherein the image display device is a projector that displays an image by projecting the image.

Images