JP5670828B2 - A portable terminal capable of photographing a three-dimensional image, and a program for controlling the portable terminal - Google Patents

Description

  The present invention relates to control of a mobile terminal, and more particularly to control of a mobile terminal that can capture a three-dimensional image.

  Cameras that can take a three-dimensional image are known. This camera is provided with two lenses, and acquires image data for the left eye and image data for the right eye.

  For example, Japanese Patent Application Laid-Open No. 2010-288253 (Patent Document 1) states that “even if a part of the angle of view at the time of shooting is obstructed by an obstacle such as a photographer's finger, the generated viewpoint image is generated. The technology for making it easy to see stereoscopic images is disclosed ([Summary] [Problem]).

  Japanese Patent Application Laid-Open No. 2010-114760 discloses a technique for “notifying a user easily of fingering on an imaging optical system of a compound eye camera” ([Summary] [Problem]).

JP 2010-288253 A JP 2010-114760 A

  According to the technique disclosed in Patent Document 1 or Patent Document 2, additional image processing is required, and the power consumption of the processor may be increased.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a mobile terminal that notifies that any of a plurality of cameras is blocked by a finger or the like. That is. Another object is to provide a portable terminal capable of reproducing and displaying an image shot with any camera blocked.

  Another object is to provide a program for controlling a mobile terminal so as to notify that any of a plurality of cameras is blocked by a finger or the like. Another object is to provide a program for controlling a portable terminal so that an image taken with any camera blocked can be reproduced and displayed without a sense of incongruity.

  According to a certain aspect, a portable terminal for photographing an image that can be displayed in three dimensions includes a first imaging unit disposed inside a casing of the portable terminal, a first imaging unit, and a side edge of the casing. A second imaging unit disposed between the first imaging unit and the second imaging unit, and a shutter switch that receives a command for imaging by the first imaging unit or the second imaging unit, and an image from the first imaging unit or the second imaging unit. A display device for displaying and a control means for controlling the operation of the mobile terminal are provided. When the operation mode of the portable terminal is a mode for capturing a two-dimensional image, the control unit displays the image from the first imaging unit on the display device. When the operation mode of the portable terminal is a mode for capturing a three-dimensional image, the control unit displays the image from the second imaging unit on the display device.

  Preferably, when the difference between the exposure of the first imaging unit and the exposure of the second imaging unit exceeds a predetermined value, the control unit displays the image in a mode different from the predetermined display mode. Is displayed on the display device.

  Preferably, when the difference between the exposure of the first imaging unit and the exposure of the second imaging unit exceeds a predetermined value, the control unit uses the right eye for an image from the imaging unit that provides a large exposure. And the image data for the left eye are stored in the memory.

  Preferably, in the housing, an opening for attaching a strap is formed at a diagonal position of the shutter switch.

  Preferably, the thickness of the casing in the vicinity of the first imaging unit and the second imaging unit exceeds the thickness in the vicinity of the side edge of the casing, and the surface of the casing between the vicinity and the side edge is , Including arcs based on at least two different centers of curvature.

  According to another embodiment, a program for controlling a portable terminal for capturing an image that can be displayed in three dimensions is provided. The portable terminal includes a first camera disposed inside the casing of the portable terminal, a second camera disposed between the first camera and a side edge of the casing, and the first camera or the first camera. A display device for displaying images from the two cameras and a processor for controlling the operation of the portable terminal. When the operation mode of the mobile terminal is a mode for capturing a two-dimensional image, the program displays the image from the first camera on the display device, and the operation mode of the mobile terminal is a three-dimensional operation mode. If it is a mode for taking an image, a step of displaying an image from the second camera on the display device is executed.

  Preferably, when the difference between the exposure of the first camera and the exposure of the second camera exceeds a predetermined value, the program displays the image in a manner different from a predetermined display manner. The step of displaying on the display device is further executed.

  Preferably, if the difference between the exposure of the first camera and the exposure of the second camera exceeds a predefined value, the program causes the processor to display an image from the camera that produces a large exposure for the image for the right eye. The step of storing in the memory as data and image data for the left eye is further executed.

  The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings.

It is a figure showing the external appearance of the mobile telephone 10 which is one aspect | mode of a portable terminal. It is a figure showing the mobile telephone 10 from diagonally upward. 3 is a block diagram showing a hardware configuration of mobile phone 10. FIG. It is a figure showing the display of the monitor screen in the display. 4 is a flowchart showing a part of processing executed by CPU 100 of mobile phone 10. It is a flowchart showing the control structure of the mobile telephone which concerns on this modification. 4 is a flowchart showing a part of processing executed by CPU 100 of mobile phone 10. It is a figure showing the shape of the curved part 800. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  A mobile terminal according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a diagram illustrating an appearance of a mobile phone 10 that is one mode of a mobile terminal. In the following example, an embodiment of the present invention is described based on the mobile phone 10, but the application of the technical idea according to the present invention is not limited to the mobile phone 10. For example, the present invention can be applied to a portable information processing terminal such as a mobile phone, a smartphone, or the like that has a camera function using a plurality of lenses.

  Referring to FIG. 1A, mobile phone 10 includes lenses 110 and 111 and a shutter switch 140 in its housing. A monitor (not shown) is disposed on the back surface of the surface on which the lenses 110 and 111 are disposed.

  Referring to FIG. 1B, as is apparent from the cross section AA of the mobile phone 10, the outer shape of the casing of the mobile phone 10 is such that the thickness of the lenses 110 and 111 is greater than the thickness of other portions. Also exceeds. More specifically, the thickness of the housing is curved from the lenses 110 and 111 toward the peripheral edge. In one aspect, the curvature is defined as a combination of portions of two arcs of curvature. For example, the first center of curvature and the second center of curvature are located on opposite sides of the curved portion 800. The configuration of the bending portion 800 will be described in detail in FIG.

  Referring to FIG. 1C, the longitudinal thickness of the casing of mobile phone 10 is configured to be constant in a certain aspect, as shown as section BB.

  The configuration of the mobile phone 10 will be further described with reference to FIG. FIG. 2 is a diagram illustrating the mobile phone 10 from obliquely above. The mobile phone 10 further includes an opening 200 for attaching a strap. In one aspect, the opening 200 is formed at a diagonal position of the shutter switch 140. When arranged at such a position, when the user of the mobile phone 10 takes a picture, a strap (not shown) hangs under the casing, and the mobile phone 10 can be easily held.

  With reference to FIG. 3, a configuration of mobile phone 100 according to the embodiment of the present invention will be described. FIG. 3 is a block diagram illustrating a hardware configuration of the mobile phone 10.

  The cellular phone 10 includes a CPU (Central Processing Unit) 100, lenses 110 and 111, diaphragms 112 and 113, CMOS (Complementary Metal-Oxide Semiconductor) 114 and 115, CDS (Correlated Double Sampling) 116 and 117, Amplifiers 118 and 119, A / D (Analog to Digital) converters 120 and 121, lens motors 130 and 131, iris motors 132 and 133, timing generators 134 and 135, a shutter switch 140, and a mode selection button 142, a power button 144, a RAM (Random Access Memory) 150, an image signal processing circuit 152, a YC conversion processing circuit 154, a compression / decompression processing circuit 158, a ROM (Read-Only Memory) 160, and a flash memory 162, LCD (Liquid Crystal Display) driver 164, It comprises a media controller 166, a display 170, a touch sensor 172, a communication circuit 190, and an antenna 192. A memory card 168 can be attached to the media controller 166.

  In one aspect, the mobile phone 10 has a main body formed in a thin, substantially rectangular parallelepiped shape. The lens 110 is provided on the front surface of the main body. The shutter switch 140 is provided on the upper surface of the main body or the rear surface of the main body. The shutter switch 140 is not limited to a switch configured as hardware, and may be configured as a software key displayed on the display 170.

  The CPU 100 is electrically connected to each part of the mobile phone 10 via the data bus 180. The CPU 100 controls driving of each unit connected based on signals input from the shutter switch 140, the mode selection button 142, the power button 144, and the touch sensor 172.

  When the user of the mobile phone 10 sets the operation mode of the mobile phone 10 to the shooting mode and presses the shutter switch 140, the subject light imaged by the lens 110 is acquired as a captured image. The CPU 100 writes the captured image in the memory card 168. The photographing mode includes a conventional two-dimensional mode for photographing a two-dimensional photograph and a three-dimensional mode for photographing a photograph that can be viewed as a three-dimensional image.

  In one aspect, a mode selection button 142 and a power button 144 are provided on the side surface of the main body of the mobile phone 10. In addition to the above-described shooting mode, the mobile phone 10 has operation modes such as a playback mode for playing back and displaying captured images stored in the memory card 168 and a menu mode for performing various settings of the mobile phone 10. Have. The user can switch between the modes by pressing the mode selection button 142. In another aspect, the user can switch on / off the power of the mobile phone 10 each time the user presses the power button 144.

  The display 170 is provided on the back surface of the main body of the mobile phone 10. The display 170 is realized by a liquid crystal display device, an organic EL (Electro Luminescence) display, or the like, but is not limited to these devices. In one aspect, the display 170 has a display screen that is approximately the same size as the back of the main body. The display 170 functions as an electronic viewfinder that displays a captured image of a subject in real time in the shooting mode. In the playback mode, the display 170 functions as a monitor for playing back and displaying the captured image stored in the memory card 168. Further, in the menu mode, display 170 displays a setting screen for accepting an input for defining the operation of mobile phone 10.

  Further, the display 170 is provided with a panel-like touch sensor 172. When the user's hand or finger touches the display screen of the display 170, the touch sensor 172 is configured to detect the contact position. When the user grips the main body of the mobile phone 10, the touch sensor 172 can also detect the grip area. The touch sensor 172 also functions as an operation unit for receiving input of various operation instructions by a touch operation on the display 170.

  The aperture 112 and the CMOSs 114 and 115 are arranged side by side behind the lens 110. The lens 110 is connected to the lens motor 130. The diaphragm 112 is connected to the iris motor 132. The lens motor 130 changes the zoom magnification by moving the zoom lens of the lens 110 to the wide side or the tele side in accordance with a user operation. Further, the lens motor 130 adjusts the focal point so that the photographing condition is optimized by moving the focus lens of the lens 110 according to the subject distance and zoom lens magnification based on the signal from the CPU 100. The iris motor 132 adjusts the exposure by operating the diaphragm 112.

  The subject light transmitted through the lens 110 and the aperture 112 forms an image on the light receiving surfaces of the CMOSs 114 and 115. A plurality of light receiving elements for accumulating charges corresponding to the amount of received light are arranged on the light receiving surfaces of the CMOSs 114 and 115. The CMOSs 114 and 115 output charges accumulated in the respective light receiving elements by imaging as imaging signals. Timing generators (TG) 134 and 135 controlled by the CPU 100 are connected to the CMOSs 114 and 115. The CMOSs 114 and 115 are driven by timing signals (clock pulses) input from the TGs 134 and 135, respectively.

  The imaging signals acquired by the CMOSs 114 and 115 are input to a correlated double sampling circuit (CDS) 116, and output as R, G, and B image data corresponding to the accumulated charge amount of each light receiving element of the CMOSs 114 and 115. . The image data output from the CDS 116 is amplified by an amplifier (AMP) 118, and the amplified data is converted into digital image data by the A / D 120. Image data output from the A / D 120 is temporarily stored in the RAM 150 which is a work memory.

  The image signal processing circuit 152 executes gradation conversion, white balance correction, γ correction processing, and other image processing based on the image data stored in the RAM 150.

  The YC conversion processing circuit 154 converts the data after image processing into a luminance signal Y and color difference signals Cr and Cb.

  In the shooting mode, the CMOSs 114 and 115 execute an imaging process at a predetermined frame rate. The image signal processing circuit 152 performs the image processing on the image data acquired by the imaging processing. The display 170 displays the processed captured image as the current image.

  The LCD driver 164 drives the display 170. The LCD driver 164 has an image memory, a D / A converter, and the like (not shown). The D / A converter converts the captured image temporarily stored in the image memory into, for example, an NTSC (National Television System Committee) analog signal, and outputs the converted signal to the display 170.

  In the shooting mode, when the shutter switch 140 is pressed and a release operation is performed, the CMOSs 114 and 115 store image data (hereinafter referred to as “original image data”) having a larger number of pixels than a live image for so-called through image display. get. The image signal processing circuit 152 performs the above image processing on the original image data. The compression / decompression processing circuit 158 compresses the captured image after the image processing according to a predetermined compression format (for example, JPEG (Joint Photographic Experts Group) format). The compressed captured image is written to the memory card 168 by the media controller 166.

  On the other hand, in the playback mode, the captured image recorded on the memory card 168 is read out to the RAM 150 by the media controller 166. The compression / decompression processing circuit 158 executes decompression processing of the image read to the RAM 150. The LCD driver 164 reads the decompressed data and reproduces and displays an image on the display 170 based on the data.

  When the touch sensor 172 detects contact of a user's hand or finger, the touch sensor 172 outputs a signal indicating the contact position to the CPU 100. In one aspect, the touch sensor 172 is disposed under the display screen of the display 170 in accordance with the arrangement position. In another aspect, touch sensor 172 is formed of a transparent screen and is configured to cover the display screen. In addition, as a method for detecting contact with the display 170, for example, there are a pressure-sensitive type that detects a change in pressure on a panel (not shown) of the display 170, and an electrostatic type that detects an electric signal due to static electricity. However, any method can be applied to the present embodiment.

  In one aspect, when the CPU 100 displays a captured image on the display 170, when the signal from the touch sensor 172 is not in the CPU 100, that is, when the user is not touching the display 170, the CPU 100 displays the captured image on the display 170. Is displayed on the entire screen. In another aspect, when the CPU 100 detects the input of the signal output from the touch sensor 172, the CPU 100 sets a display area of the captured image so as to avoid the contact position detected by the touch sensor 172, and this display area The captured image is displayed on the screen.

  The display mode of the display 170 will be further described with reference to FIG. FIG. 4 is a diagram illustrating the display of the monitor screen on the display 170. When the shooting mode of the mobile phone 10 is the three-dimensional shooting mode, the CPU 100 causes the display 170 to display an image acquired by the lens 111. When the user holds the mobile phone 10, an image from the lens 110 that is not easily blocked by a hand or a finger is not displayed.

  That is, as shown in the screen (A), when the photographing mode of the mobile phone 10 is the three-dimensional photographing mode, the display 170 displays that fact on the screen. As shown in the screen (B), when the user's finger overlaps the lens 111, the display 170 displays the image 410 of the finger as a monitor image. By visually recognizing the image 410, the user can easily know that the finger is superimposed on the lens 111, so that a failure in capturing the three-dimensional image can be prevented.

  With reference to FIG. 5, the control structure of the mobile phone 10 will be described. FIG. 5 is a flowchart showing a part of processing executed by CPU 100 of mobile phone 10.

  In step S510, CPU 100 detects that a command to switch to camera mode is input based on a user operation on a menu screen (not shown) displayed on display 170.

  In step S520, CPU 100 activates the camera function. The CPU 100 sets the shooting mode of the camera according to the information stored in the flash memory 162.

  In step S530, CPU 100 determines whether the shooting mode is the two-dimensional shooting mode or the three-dimensional shooting mode. When CPU 100 determines that the shooting mode is the two-dimensional shooting mode (YES in step S530), CPU 100 switches control to step S540. On the other hand, when CPU 100 determines that the shooting mode is the three-dimensional shooting mode (NO in step S530), CPU 100 switches control to step S550.

  In step S540, CPU 100 displays the image from right-eye camera (lens 110) on monitor 170 as a monitor image.

  In step S550, CPU 100 displays an image from left-eye camera (lens 111) on monitor 170 as a monitor image. At this time, if the user's finger is covering the lens 111 (see screen (B) in FIG. 4), the user can know this immediately, so the user can change the way of holding the mobile phone 10 and the 111 can be prevented from being blocked.

  In step S560, CPU 100 executes shooting based on an operation on shutter switch 140.

  As described above, according to the mobile phone 10 according to the embodiment of the present invention, when the shooting mode is the three-dimensional shooting mode, an image from the lens 111 close to the outside of the housing is displayed as a monitor image. Displayed on the display 170. Since the outer portion of the housing is a portion where the user's hand and fingers are likely to overlap, the display 170 displays the image if the hands and fingers overlap. When the user recognizes the image, the user can prevent the finger from overlapping the lens 111 by bringing the mobile phone 10 home. Thereby, the failure of imaging | photography in three-dimensional imaging | photography can be prevented.

<Modification>
Hereinafter, modifications of the embodiment of the present invention will be described. FIG. 6 is a flowchart showing the control structure of the mobile phone according to the present modification. The hardware configuration of the mobile phone according to this modification is the same as the hardware configuration of the mobile phone 10 described above. Therefore, the description of the hardware configuration will not be repeated.

  In step S610, CPU 100 detects that a command to switch to the three-dimensional imaging mode is given based on a user operation on shutter switch 140.

  In step S620, CPU 100 determines whether the difference between the exposure of lens 110 of the right-eye camera and the exposure of lens 111 of the left-eye camera is equal to or greater than a predetermined value. When CPU 100 determines that the difference is equal to or greater than a predetermined value (YES in step S620), CPU 100 switches control to step S630. In this case, either the lens 111 or the lens 110 is blocked by the user's finger or hand. If not (NO in step S630), CPU 100 switches control to step S640.

  In step S630, CPU 100 displays an image from lens 111 of the left-eye camera and an image from lens 110 of the right-eye camera in a mode different from the normal mode of displaying the monitor screen. Thereby, the user can know that one of the lenses is blocked by a finger or a hand.

  In step S640, CPU 100 causes display 170 to display an image from lens 111 in a normal manner defined for displaying a monitor screen.

  As described above, the mobile phone 10 according to the present modification calculates the difference in exposure between the two lenses, and if the difference is equal to or greater than a predetermined value, one of the lenses is blocked. And notify that. As a result, the user can change the way the mobile phone 10 is held, so that failure when taking a three-dimensional photograph can be prevented.

  Note that aspects different from the normal aspects include the following operations, for example. For example, the CPU 100 may display the image from the lens 110 and the image from the lens 111 side by side on the display 170. In another aspect, the CPU 100 may alternately display the image from the lens 110 and the image from the lens 111 on the display 170. In yet another aspect, the CPU 100 may alternately display the image displayed on the display 170 in a normal color and another color such as red. In any display mode, the user can know that the lens 110 or the lens 111 is blocked by a finger or a hand.

<Save image>
Next, still another aspect of the embodiment of the present invention will be described. The mobile phone according to this aspect has a function of switching a mode of storing an image when shooting is performed in a state where any lens is covered with a finger or the like in the three-dimensional shooting mode. Note that the mobile phone according to this aspect is realized by using the hardware configuration of the mobile phone 10 described above. Therefore, the description of the hardware configuration will not be repeated.

  With reference to FIG. 7, a control structure of mobile phone 10 according to this aspect will be described. FIG. 7 is a flowchart showing a part of processing executed by CPU 100 of mobile phone 10.

  In step S610, CPU 100 detects that a command to switch to the three-dimensional imaging mode is given based on a user operation on shutter switch 140.

  In step S620, CPU 100 determines whether the difference between the exposure of lens 110 of the right-eye camera and the exposure of lens 111 of the left-eye camera is equal to or greater than a predetermined value. When CPU 100 determines that the difference is equal to or greater than a predetermined value (YES in step S620), CPU 100 switches control to step S730. In this case, either the lens 111 or the lens 110 is blocked by the user's finger or hand. If not (NO in step S630), CPU 100 switches control to step S740.

  In step S730, CPU 100 stores, in RAM 150, image data from lens 110 of the right-eye camera as right-eye image data and left-eye image data. Thereafter, when the user gives a save command to the mobile phone 100, the CPU 100 writes the image data in the flash memory 162 or the memory card 168.

  In step S740, CPU 100 stores image data from right-eye camera lens 110 in RAM 150 as right-eye image data and left-eye camera lens 111 as left-eye image data. . Thereafter, when the user gives a save command to the mobile phone 100, the CPU 100 writes the image data in the flash memory 162 or the memory card 168.

  In step S750, CPU 100 determines whether an instruction to end the shooting mode has been input or not. When CPU 100 determines that the command has been input (YES in step S750), CPU 100 ends the shooting mode and switches to standby mode or another standard operation mode. If not (NO in step S750), CPU 100 returns control to step S620.

  Depending on the above, the mobile phone 10 according to this aspect uses image data from other lenses that are not blocked by the fingers when both lenses are blocked by the fingers or the like in the three-dimensional shooting mode. Save as image data. Therefore, when an image is reproduced, a three-dimensional display is not realized, but a two-dimensional image is displayed.

<Configuration around the lens>
Here, the shape of the mobile phone 10 according to the present embodiment will be further described with reference to FIG. FIG. 8 is a diagram illustrating the shape of the bending portion 800. As described above, the bending portion 800 includes at least two arcs. As is clear from FIG. 8, the center of curvature 810 of one arc and the center of curvature 820 of the other arc are respectively located on the opposite sides of the casing. According to such a configuration, when the user grips the mobile phone 10, a grip feeling can be realized, and a finger can be prevented from sliding up to a portion where the lens is disposed. Thereby, when taking a three-dimensional image, it is difficult for the lens to be blocked by the finger, so that shooting failure can be prevented.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention is applicable to mobile terminals such as mobile phones, smartphones, and other mobile terminals having a function capable of capturing a three-dimensional image.

  10,100 mobile phone, 10,111 lens, 118,119 amplifier, 120,121 converter, 130,131 lens motor, 132,133 iris motor, 134,135 timing generator, 140 shutter switch, 142 mode selection button, 144 Power button, 150 RAM, 152 Image signal processing circuit, 154 Conversion processing circuit, 158 Compression / decompression processing circuit, 162 Flash memory, 164 driver, 166 Media controller, 168 Memory card, 170 Display, 172 Touch sensor, 180 Data bus, 190 Communication circuit, 192 antenna, 200 aperture, 410 images, 800 bend, 810,820 center of curvature.

Claims (8)

A portable terminal for taking images that can be displayed in three dimensions,
First imaging means disposed inside a casing of the mobile terminal;
A second imaging means disposed between the first imaging means and a side edge of the housing;
A shutter switch that accepts an instruction to shoot by the first imaging means or the second imaging means;
A display device for displaying an image from the first imaging means or the second imaging means;
Control means for controlling the operation of the mobile terminal,
When the operation mode of the portable terminal is a mode for taking a two-dimensional image, the control means displays the image from the first imaging means on the display device,
When the operation mode of the portable terminal is a mode for taking a three-dimensional image, the control unit displays the image from the second imaging unit on the display device.   When the difference between the exposure of the first imaging unit and the exposure of the second imaging unit exceeds a predetermined value, the control unit displays the image in a mode different from a predetermined display mode. The mobile terminal according to claim 1, wherein the mobile terminal is displayed on a display device.   When the difference between the exposure of the first imaging unit and the exposure of the second imaging unit exceeds a predetermined value, the control unit uses the right eye for an image from the imaging unit that provides a large exposure. The portable terminal according to claim 1, wherein the image data and the image data for the left eye are stored in a memory.   The portable terminal according to any one of claims 1 to 3, wherein an opening for attaching a strap is formed at a diagonal position of the shutter switch in the housing.   The thickness of the casing near the first imaging means and the second imaging means exceeds the thickness near the side edge of the casing, and the casing between the vicinity and the side edge The mobile terminal according to any one of claims 1 to 4, wherein the surface of the mobile phone includes an arc based on at least two different centers of curvature. A program for controlling a portable terminal for photographing an image that can be displayed in three dimensions, wherein the portable terminal includes a first camera disposed inside a casing of the portable terminal, and the first A second camera disposed between the camera and a side edge of the housing, a display device for displaying an image from the first camera or the second camera, and an operation of the portable terminal And a processor for controlling the
The program is stored in the processor.
When the operation mode of the mobile terminal is a mode for taking a two-dimensional image, displaying the image from the first camera on the display device;
When the operation mode of the portable terminal is a mode for taking a three-dimensional image, a program that executes a step of displaying an image from the second camera on the display device.   When the difference between the exposure of the first camera and the exposure of the second camera exceeds a predetermined value, the program causes the processor to display an image in a mode different from a predetermined display mode. The program according to claim 6, further comprising the step of displaying the message on a display device.   If the difference between the exposure of the first camera and the exposure of the second camera exceeds a predefined value, the program causes the processor to generate an image from the camera that produces a large exposure for the right eye. The program according to claim 6 or 7, further comprising a step of storing the image data and the image data for the left eye in a memory.

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