Image display device, image display method, and program

Abstract

To provide an image display unit, an image display method, and a program allowing a user to perform display of a wide-angle image obtained through stitching with an operation convenient for the user.SOLUTION: A control unit 101 of a smartphone 100 displays the entirety of a wide-angle image obtained through stitching in a reduced state on a screen of a display 109 while a normal playback mode is continued. In the normal playback mode, when there is a press-and-hold operation on a touch panel operation member formed integrally with the display 109, the control unit 101 switches from the normal playback mode to an imaging field angle playback mode for displaying, in an enlarged state on the screen of the display 109, a display area in the wide-angle image determined according to a display field angle at which the magnification becomes larger than the magnification of reduction display, and while the imaging field angle playback mode is continued, controls not to display the next image and a list image on the screen of the display 109.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an image display device, an image display method, and a program, and more particularly to an image display device, an image display method, and a program for displaying a wide-angle image obtained by stitching. [Background technology]

[0002] 2. Description of the Related Art Conventionally, a technique has been known in which a wide-angle image is obtained by successively capturing a plurality of images while moving the imaging range of a camera and stitching the images together.

[0003] For example, Patent Document 1 discloses a technique for detecting the coordinate position of a main subject in a wide-angle image obtained by stitching, thereby quickly displaying an enlarged image of the main subject in the wide-angle image.

[0004] There is also known a technique for enlarging and scrolling such a wide-angle image in response to a button operation (see, for example, Patent Document 2).

[0005] There is also known a conventional technique for advancing to the next image when the predetermined user operation is performed at the end of a wide-angle image during enlarged scroll display. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-23522 [Patent Document 2] Japanese Patent Application Publication No. 11-146243 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the conventional technology disclosed in the above-mentioned Patent Document 1 is difficult to use when one wishes to check the details of the background, which is not the main subject.

[0008] Furthermore, during the enlarged scroll display of a wide-angle image, because the wide-angle image is enlarged, the user may not notice that they have reached the edge of the wide-angle image. In this case, if the user performs the above-mentioned button operation at the edge of the wide-angle image, a problem occurs in conventional image display devices, where the image is unintentionally advanced to the next image. Furthermore, if the image is advanced to the next image in this way, even if the user returns the display to the original wide-angle image, the enlarged display setting for the original wide-angle image is canceled, so the user must reset the enlarged display setting.

[0009] Therefore, an object of the present invention is to provide an image display device, an image display method, and a program that allow a user to easily display a wide-angle image obtained by stitching. [Means for solving the problem]

[0010] The image display device according to claim 1 of the present invention is an image display device having a display unit and an operation unit which is a touch panel operation member integrally formed with the display unit, and which comprises: an image acquisition means for acquiring a plurality of images successively taken with the same shooting angle of view but different imaging ranges; a wide-angle image generation means for generating a wide-angle image by stitching the plurality of images; and a display angle of view in which, when the operation unit receives a first user operation while a first mode is ongoing in which the entire wide-angle image is displayed in a reduced scale on the screen of the display unit, the magnification of the wide-angle image is greater than the magnification of the reduced display; A display angle of view with a magnification determined according to the angle of view at the time of shooting before the stitching a switching means for switching to a second mode in which a display area having a center in the vicinity of the area where the first user operation is performed is enlarged and displayed on the screen of the display unit; a scrolling means for scrolling a display position of the wide-angle image on the screen of the display unit when the operation unit receives a third user operation while the second mode is continuing; a control means for controlling the display of an image different from the wide-angle image on the screen of the display unit to be difficult while the second mode is continuing, The control means displays, while the second mode is continuing, an icon representing a magnification determined according to an angle of view at the time of shooting before the stitching on a screen of the display unit; When the operation unit receives a second user operation while the second mode is continuing, the control unit displays a display area with a magnification different from the shooting angle of view on the screen of the display unit. and displaying an icon representing a magnification based on the angle of view at the time of photographing on the screen of the display unit.It is characterized by: [Effects of the Invention]

[0011] According to the present invention, a wide-angle image obtained by stitching can be displayed with an easy-to-use operation for the user. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating a hardware configuration of a smartphone as an image display device according to a first embodiment of the present invention. [Figure 2] FIG. 4 is a diagram for explaining a playback mode operation process according to the first embodiment. [Figure 3] 10 is a flowchart of a playback mode operation process according to the first embodiment. [Figure 4] FIG. 10 is a diagram for explaining a warning display in a playback mode according to the first embodiment. [Figure 5] FIG. 10 is a diagram for explaining a playback mode operation process according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following, an example in which a smartphone is used as an image display device according to the present invention will be described.

[0014] Example 1 FIG. 1 is a block diagram showing a hardware configuration of a smartphone 100 as an image display device according to a first embodiment of the present invention.

[0015] The smartphone 100 includes a control unit 101, a ROM 102, a RAM 103, an optical system 104, an imaging unit 105, an A / D conversion unit 106, an image processing unit 107, a recording medium 108, a display unit 109, an operation unit 110, and a stitching processing unit 111.

[0016] The control unit 101 is, for example, a CPU, and reads out from the ROM 102 an operation program for each block included in the smartphone 100, expands the program into the RAM 103, and executes the program to control the operation of each block included in the smartphone 100. The image processing unit 107 and the stitching processing unit 111 in FIG. 1 are functions realized by the control unit 101 executing the program.

[0017] The ROM 102 is a rewritable nonvolatile memory, and stores operation programs for each block of the smartphone 100, as well as parameters and the like required for the operation of each block.

[0018] The RAM 103 is a rewritable volatile memory, and is used as a temporary storage area for data output during the operation of each block included in the smartphone 100.

[0019] The optical system 104 forms an image of a subject on the imaging unit 105 .

[0020] The imaging unit 105 (image acquisition means) has an imaging element such as a CCD or CMOS sensor, photoelectrically converts the optical image formed on the imaging element by the optical system 104, and outputs the resulting analog image signal to the A / D conversion unit 106.

[0021] The A / D conversion unit 106 is an electronic circuit that applies A / D conversion processing to the input analog image signal and outputs the resulting digital image data to the RAM 103 for storage.

[0022] The image processing unit 107 applies various image processing to the image data stored in the RAM 103, such as white balance adjustment, color interpolation, reduction / enlargement, perspective distortion correction, and filtering.

[0023] The recording medium 108 is a removable memory card or the like, and records images stored in the RAM 103 that have been processed by the image processing unit 107 or images that have been A / D converted by the A / D conversion unit 106 as recorded images. These recorded images may also be recorded in the ROM 102.

[0024] The display unit 109 is a display device such as an LCD, and displays various information, such as a through display of the subject image captured by the imaging unit 105 .

[0025] The operation unit 110 is a touch panel operation member that is integrally formed with the display unit 109 .

[0026] The stitching processing unit 111 (wide-angle image generating means) generates one wide-angle image by stitching (joining together) multiple images that have the same shooting angle of view but different shooting ranges and that are continuously captured by the imaging unit 105. As a stitching method, for example, the method disclosed in Patent Document 1 may be used.

[0027] Hereinafter, the playback mode operation process of the smartphone 100 according to this embodiment will be described with reference to FIGS.

[0028] FIG. 3 is a flowchart of the playback mode operation process according to this embodiment.

[0029] In this process, the control unit 101 reads out a program from the ROM 102, loads it into the RAM 103, and executes it.

[0030] 3, first, in step S301, it is determined whether the playback mode is continuing, and if the playback mode is continuing (YES in step S301), the process proceeds to step S302, where the normal playback mode (first mode) is started (step S302). On the other hand, if the playback mode is not continuing, that is, if an instruction to end the playback mode has been received by operation unit 110 (NO in step S301), this process ends.

[0031] Screen 202 in Fig. 2 is the screen displayed on display unit 109 when normal playback mode starts in step S302. Screen 202 displays a reduced version of the entire wide-angle image generated by stitching multiple images. In this embodiment, the wide-angle image includes a building 205 and a sun 206 as objects. While normal playback mode is running, the user can advance the wide-angle image currently displayed on the screen to the next image or switch to an image list display by swiping with one finger on operation unit 110 (touch panel operation member).

[0032] Returning to FIG. 3, in step S303, the operation unit 110 (touch panel operation member) is pressed and held (first user operation), and it is determined whether or not a playback mode switch has been initiated. If a playback mode switch has been initiated (YES in step S303), the process proceeds to step S304.

[0033] In step S304, the control unit 101 (switching means) switches the playback mode of the display unit 109 from the normal playback mode to the shooting angle of view playback mode (second mode), and starts the shooting angle of view playback mode.

[0034] For example, when a user performs a long press operation near building 205 in the wide-angle image on screen 202 in FIG. 2, playback mode switching is initiated, and the captured image field of view playback mode is started. As a result, the display screen of display unit 109 is switched from screen 202 to screen 203 in FIG. 2. On screen 203, a display area of ​​the wide-angle image, centered around building 205, which was long pressed in step S303, is enlarged and displayed on the entire screen. Note that this enlarged display area is determined according to a preset display angle of view (here, the angle of view at the time of capture before stitching (captured image field)) that is a magnification greater than the magnification of the reduced display in step S302. Also, screen 203 includes icon 207 that indicates the display magnification relative to the captured image field of view. Note that the display angle of the wide-angle image on screen 203 may be the preset angle of view and is not limited to the captured image field of view.

[0035] Each time the user taps icon 207 (second user operation), control unit 101 changes the angle of view value of the display angle of view (display magnification) of the wide-angle image to 1.0x, 2.0x, or 0.5x the angle of view at the time of shooting (changing means). In response to this change, the display of icon 207 also changes to 1.0x, 2.0x, or 0.5x.

[0036] With this configuration, the user can check the subject at a size equivalent to that seen on the screen of display unit 109 during shooting before stitching, allowing the user to check the details of the subject. Furthermore, because the wide-angle image displayed on screen 202 is partially displayed on screen 203 at the angle of view during shooting before stitching, the wide-angle image displayed on screen 203 does not have a resolution that is too low compared to the resolution of display unit 109 in Figure 1. Furthermore, when the shooting angle of view playback mode is running, the user can easily change the display magnification by simply tapping icon 207, which is easy to use.

[0037] Furthermore, since the stitched wide-angle image has significant perspective distortion, especially at the edges of the image, an image with the perspective distortion corrected may be displayed on screen 203 depending on which part of the wide-angle image is to be displayed.

[0038] Furthermore, when the user performs a swipe operation (third user operation) on the operation unit 110 (touch panel operation member) while the imaging angle of view playback mode is being executed, the control unit 101 (scrolling means) scrolls the display position of the wide-angle image to a position corresponding to the swipe operation. For example, the screen 204 in Fig. 2 shows how the display position of the wide-angle image has been scrolled from near the building 205 (screen 203) to near the sun 206 by the user's swipe operation.

[0039] Unlike the normal playback mode, during execution of the shooting angle of view playback mode, even if the display position reaches the edge of the wide-angle image due to a swipe operation, the control unit 101 (control means) controls the display unit 109 not to display an image other than the wide-angle image. In other words, the display unit 109 is controlled so that image advancement to the next image or switching to image list display is not performed. This configuration prevents the display position and display magnification of the wide-angle image from being reset (cancelled) as a result of the user unintentionally advancing to the next image, etc., during execution of the shooting angle of view playback mode. The wider the angle of view of a wide-angle image, the higher the display magnification often becomes while the shooting angle of view playback mode is ongoing, and therefore there is a significant advantage in preventing the display position and display magnification of the wide-angle image from being reset due to image advancement to the next image, etc.

[0040] Furthermore, if the display position reaches the edge of the wide-angle image due to a swipe operation while the shooting angle of view playback mode is ongoing, a clear warning (notification) may be given that image advancement to the next image or switching to image list display is prohibited. For example, as in screen 401 in Fig. 4, if the display position reaches the edge of the wide-angle image and only a portion of the display area of ​​the wide-angle image is enlarged and displayed on screen 401, the displayed image may be darkened or a warning icon 402 may be displayed.

[0041] Furthermore, if the user taps the warning icon 402 during such a warning (notification) (fourth user operation), the display position may be scrolled to a position where the entire display area of ​​the wide-angle image is enlarged and displayed on the entire screen of the display unit 109.

[0042] 3, next, in step S305, if the shooting angle of view playback mode is to be ended, that is, if the user taps the end icon 208 (FIG. 2), the process returns to step S301. After that, if the playback mode is still ongoing, the normal playback mode is started again (YES in step S301, step S302).

[0043] Here, the end icon 208 is an icon for ending the shooting angle of view playback mode, and the user can end the shooting angle of view playback mode by tapping the end icon 208 while the shooting angle of view playback mode is ongoing.

[0044] In this embodiment, the image capture angle of view playback mode is started when the user presses and holds a portion of the wide-angle image displayed on the screen 202. However, the present invention is not limited to this, as long as the operation unit 110 behaves as a position-holding switch in response to a user operation to instruct switching to the playback mode, that is, as a switch that maintains the state after switching once an instruction to switch to the image capture angle of view playback mode is given. For example, a dedicated start icon may be displayed on the screen of the display unit 109 while the normal playback mode is ongoing, or a physical toggle button may be provided on the operation unit 110. Furthermore, when the image capture angle of view playback mode is started, a specific display position, such as the center of the wide-angle image, may be displayed as the image capture angle of view.

[0045] Furthermore, in this embodiment, the display position of the wide-angle image is scrolled when the user performs a swipe operation on screen 203 after the start of the shooting angle of view playback mode, but the present invention is not limited to this. For example, operation unit 110 may detect a user's movement operation of smartphone 100 using an inertial sensor or the like, and scroll the display position of the wide-angle image in accordance with the movement (change in position and orientation) of smartphone 100. Furthermore, operation unit 110 may be provided with a physical switch for scrolling, and the display position of the wide-angle image may be scrolled in accordance with a user's operation of this physical switch.

[0046] In this embodiment, an example in which a smartphone 100 equipped with an optical system 104 and an imaging unit 105 is applied has been described as an example of an image display device according to the present invention, but the present invention is not limited to this. For example, a television or the like that does not have an optical system or an imaging unit may also be applied as an image display device according to the present invention. In this case, a communication unit that acquires digital image data from an external device is provided as image acquisition means.

[0047] Example 2 An image display device according to Example 2 will be described below. In this Example, similar to Example 1, a smartphone 100 is applied as an example of an image display device according to the present invention. Therefore, hereinafter, the same hardware configurations as those in Example 1 will be assigned the same reference numerals, and duplicated descriptions will be omitted.

[0048] Hereinafter, the playback mode operation process in the smartphone 100 according to this embodiment will be described with reference to FIGS.

[0049] 3, first, in step S301, it is determined whether or not the playback mode is continuing, and if the playback mode is continuing (YES in step S301), the process proceeds to step S302, where normal playback mode is started (step S302). On the other hand, if the playback mode is not continuing, that is, if an instruction to end the playback mode has been received by operation unit 110 (NO in step S301), this process ends.

[0050] Screen 202 in Fig. 5 is a screen displayed on display unit 109 when normal playback mode starts in step S302. Screen 202 displays a reduced version of the entire wide-angle image generated by stitching multiple images. In this embodiment, the wide-angle image includes a building 205 and a sun 206 as objects. While normal playback mode is running, the user can advance the wide-angle image currently displayed on the screen to the next image or switch to an image list display by swiping with one finger on operation unit 110 (touch panel operation member).

[0051] Returning to FIG. 3, in step S303, it is determined whether the operation unit 110, which is configured as a touch panel operation member, is touched with two fingers and a playback mode switch is initiated. If a playback mode switch is initiated (YES in step S303), the process proceeds to step S304.

[0052] In step S304, the playback mode of the display unit 109 is switched from the normal playback mode to the shooting angle of view playback mode, and the shooting angle of view playback mode is started.

[0053] For example, when a user performs a two-finger touch operation near building 205 in the wide-angle image on screen 202 in FIG. 5 (first user operation), playback mode switching is initiated, and the captured image field of view playback mode is started. This switches the display screen of display unit 109 from screen 202 to screen 503 in FIG. 5. Screen 503 displays an enlarged display area of ​​the wide-angle image, centered around building 205, which was touched with two fingers in step S303. Note that this enlarged display area is determined according to a preset display angle of view (here, the angle of view at the time of capture before stitching (captured image field)) that is a magnification greater than the magnification of the reduced display in step S302. Screen 503 also includes icon 207 that indicates the display magnification relative to the captured image field of view. Note that the display angle of the wide-angle image on screen 503 may be the preset angle of view and is not limited to the captured image field of view.

[0054] Each time the user taps icon 207 while maintaining two-finger touch, control unit 101 changes the angle of view value of the display angle of view (display magnification) of the wide-angle image to 1.0x, 2.0x, 0.5x, etc., based on the angle of view at the time of shooting. In response to this change, the display of icon 207 also changes to 1.0x, 2.0x, 0.5x.

[0055] With this configuration, the user can check the subject at a size equivalent to that seen on the screen of display unit 109 when the image was captured before stitching, and can check the details of the subject. Also, because the wide-angle image displayed on screen 202 is partially displayed on screen 503 at the angle of view when the image was captured before stitching, the wide-angle image displayed on screen 503 does not have a resolution that is too low compared to the resolution of display unit 109 in Figure 1.

[0056] Furthermore, since the stitched wide-angle image has significant perspective distortion, especially at the edges of the image, an image with the perspective distortion corrected may be displayed on screen 503 depending on which part of the wide-angle image is to be displayed.

[0057] Furthermore, when the imaging angle of view playback mode is being executed, if the user performs a swipe operation (third user operation) while maintaining a two-finger touch on the operation unit 110 (touch panel operation member), the display position of the wide-angle image is scrolled to a position corresponding to the swipe operation. For example, screen 504 in Fig. 5 shows how the display position of the wide-angle image has been scrolled from near the building 205 (screen 503) to near the sun 206 by the user's two-finger swipe operation.

[0058] Unlike the normal playback mode, when the shooting angle of view playback mode is being executed, even if the display position reaches the edge of the wide-angle image by a two-finger swipe operation, the control unit 101 (control means) controls the display unit 109 not to display an image other than the wide-angle image. In other words, the display unit 109 is controlled so that the image is not advanced to the next image or switched to an image list display. This configuration makes it possible to prevent the display position and display magnification of the wide-angle image from being reset (cancelled) as a result of the user unintentionally advancing to the next image while the shooting angle of view playback mode is being executed.

[0059] Returning to FIG. 3, next, in step S305, if the shooting angle of view playback mode is to be ended, that is, if it is detected that the user has stopped touching the screen 504 with two fingers, the process returns to step S301. After that, if the playback mode is still ongoing, the normal playback mode is started again (YES in step S301, step S302). With this configuration, the control unit 101 can immediately switch from the shooting angle of view playback mode to the normal playback mode. In other words, if the user swipes the screen 503 with one finger instead of two fingers and the display position reaches the edge of the image, the normal playback mode is selected, and image forwarding or switching to image list display is performed.

[0060] In this embodiment, the photographic angle of view playback mode is started when the user touches a portion of the wide-angle image displayed on the screen 202 with two fingers, and then ends when the user releases the two-finger touch operation. However, the present invention is not limited to this, as long as the operation unit 110 behaves as an automatic return switch in response to a user operation to switch the playback mode, that is, a switch that automatically returns to the state before the operation when the switch operation is released. For example, a dedicated automatic return icon may be displayed on the screen of the display unit 109 during the photographic angle of view playback mode, or a physical automatic return button may be provided on the operation unit 110. Furthermore, when the photographic angle of view playback mode is started, a specific display position, such as the center of the wide-angle image, may be displayed as the photographic angle of view.

[0061] In this embodiment, the display position of the wide-angle image is scrolled when the user swipes with two fingers on screen 503 after the start of the shooting angle of view playback mode, but the present invention is not limited to this. For example, an inertial sensor or the like may be used to detect the movement of smartphone 100 in FIG. 1 while two-finger touch is continuing, and the display position of the wide-angle image may be scrolled in accordance with the movement (change in position and orientation) of smartphone 100. Furthermore, operation unit 110 may be provided with a physical switch for scrolling, and the display position of the wide-angle image may be scrolled in accordance with the user's operation of this physical switch while two-finger touch is continuing.

[0062] Furthermore, if the display position reaches the edge of the wide-angle image by swiping with two fingers while the shooting angle of view playback mode is ongoing, a clear warning may be displayed using a warning icon 402 or the like, as in the first embodiment, to indicate that advancing to the next image or switching to image list display is prohibited.

[0063] In this embodiment, as in the first embodiment, an example in which the smartphone 100 equipped with the optical system 104 and the imaging unit 105 is applied has been described as an example of the image display device according to the present invention, but the present invention is not limited to this. For example, a television that does not have an optical system or an imaging unit may also be applied as the image display device according to the present invention.

[0064] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention.

[0065] (Other embodiments) The present invention can also be implemented by supplying a program that implements one or more of the functions of the above-described embodiments to a system or device via a network or a storage medium, and having one or more processors in the computer of the system or device read and execute the program.The present invention can also be implemented by a circuit (e.g., ASIC) that implements one or more of the functions. [Explanation of symbols]

[0066] 100 smartphones 101 Control section 102 ROM 103 RAM 104 Optical system 105 Imaging unit 106 A / D conversion section 107 Image processing section 108 Recording Media 109 Display section 110 Operation section 111 Stitching processing section

Claims

1. An image display device having a display unit and an operation unit which is a touch panel operation member integrally formed with the display unit, an image acquisition means for acquiring a plurality of images successively captured with the same photographing angle of view but different photographing ranges; a wide-angle image generating means for generating a wide-angle image by stitching the plurality of images; a switching means for switching to a second mode in which, when the operation unit receives a first user operation while a first mode in which the entire wide-angle image is reduced and displayed on the screen of the display unit continues, a display area of ​​the wide-angle image having a display angle of view that is larger than the magnification of the reduced display and that is determined according to the angle of view at the time of shooting before the stitching, the display area being centered around the area where the first user operation was performed, is enlarged and displayed on the screen of the display unit; a scrolling means for scrolling a display position of the wide-angle image on the screen of the display unit when the operation unit receives a third user operation while the second mode is continuing; a control means for controlling the display of an image different from the wide-angle image on the screen of the display unit to be difficult while the second mode is continuing, the control means displays, on a screen of the display unit while the second mode is continuing, an icon representing a magnification determined according to an angle of view at the time of shooting before the stitching; The image display device is characterized in that, when the operation unit receives a second user operation while the second mode is ongoing, the control means displays a display area on the screen of the display unit that has a magnification different from the shooting angle of view, and displays an icon on the screen of the display unit that represents a magnification based on the angle of view at the time of shooting.

2. 2. The image display device according to claim 1, further comprising a change unit that changes the angle of view value of the display angle of view based on the shooting angle of view when the operation unit accepts a second user operation while the second mode is ongoing.

3. 3. The image display device according to claim 1, wherein the operation unit acts as a position-holding switch in response to the first user operation.

4. 3. The image display device according to claim 1, wherein the operation unit acts as an automatic return switch in response to the first user operation.

5. 5. The image display device according to claim 1, wherein the wide-angle image is displayed with perspective correction while the second mode is in progress.

6. The image display device according to claim 1, characterized in that the control means notifies the user that display of the different image is prohibited when the scrolling means causes the display position to reach the edge of the wide-angle image and only a portion of the display area of ​​the wide-angle image is enlarged and displayed on the screen.

7. the operation unit is a touch panel operation member that is integrally configured with the display unit, 2. The image display device according to claim 1, wherein the third user operation is a swipe operation on the touch panel operation member.

8. The image display device according to claim 7, characterized in that the first user operation is a long press operation on the touch panel operating member, and when the first user operation is performed, the display area of ​​the wide-angle image centered around the area where the long press operation was performed is enlarged and displayed to fill the entire screen of the display unit.

9. 8. The image display device according to claim 7, wherein the first user operation is a two-finger touch operation on the touch panel operating member, and when the first user operation is performed, the display area of ​​the wide-angle image centered around the area where the two-finger touch operation was performed is enlarged and displayed on the entire screen of the display unit.

10. the operation unit includes an inertial sensor that detects a change in position and orientation; 2. The image display device according to claim 1, wherein the third user operation is a movement operation by the user on the image display device.

11. the operation unit includes a physical switch for scrolling; 2. The image display device according to claim 1, wherein the third user operation is a user operation on the physical switch.

12. An image display method for an image display device having a display unit and an operation unit that is a touch panel operation member integrally formed with the display unit, an image acquisition step of acquiring a plurality of images successively captured with the same photographing angle of view but different photographing ranges; a wide-angle image generating step of generating a wide-angle image by stitching the plurality of images; a switching step of switching to a second mode in which, when a first user operation is accepted by the operation unit during continuation of a first mode in which the entire wide-angle image is reduced and displayed on the screen of the display unit, a display area of ​​the wide-angle image having a display angle of view that is larger than the magnification of the reduced display and that is determined according to the angle of view at the time of shooting before the stitching, and which is centered around the area where the first user operation was performed, is enlarged and displayed on the screen of the display unit; a scrolling step of scrolling a display position of the wide-angle image on the screen of the display unit when the operation unit receives a third user operation while the second mode is continuing; a control step of controlling the display unit so that an image different from the wide-angle image is not displayed on the screen of the display unit while the second mode is continuing, In the control step, while the second mode is continuing, an icon representing a magnification determined according to an angle of view at the time of shooting before the stitching is displayed on a screen of the display unit; In the control step, when the operation unit receives a second user operation while the second mode is continuing, a display area having a magnification different from the angle of view at the time of shooting is displayed on the screen of the display unit, and an icon representing a magnification based on the angle of view at the time of shooting is displayed on the screen of the display unit.

13. A computer-executable program that causes a computer to function as each of the means of the image display device according to any one of claims 1 to 11.

Images