JP4819196B2 - Compound eye photographing apparatus and method, and program - Google Patents

Description

  The present invention relates to a compound eye photographing apparatus and method for acquiring a plurality of images for performing stereoscopic display, and a program for causing a computer to execute the compound eye photographing method.

  A stereoscopic image can be generated by combining a plurality of images acquired by photographing the same subject from different positions, and the generated stereoscopic image can be stereoscopically displayed using parallax. Are known. As a specific method of stereoscopic display, there is known an autostereoscopic method that performs stereoscopic display by arranging a plurality of images side by side. In addition, multiple images can be combined with different colors such as red and blue, or multiple images can be superimposed with different polarization directions to generate a stereoscopic image. By doing so, stereoscopic display can be performed. In this case, stereoscopic vision can be performed by using the image separation glasses such as red-blue glasses and polarized glasses to fuse the stereoscopically displayed images for stereoscopic viewing with the automatic focusing function of the eyes (an anaglyph method, Polarization filter method).

  Further, a plurality of images can be displayed on a stereoscopic display monitor capable of stereoscopic viewing and stereoscopically viewed without using polarized glasses or the like, like the parallax barrier method and the lenticular method. In this case, a plurality of images are cut into strips in the vertical direction and arranged alternately, and a light blocking barrier with an opening is arranged to generate a stereoscopic image and perform stereoscopic display. In addition, by using image separation glasses or by attaching optical elements to the liquid crystal and changing the light beam direction of the left and right images, the left and right images are alternately switched at a high speed to display a stereoscopic display due to the afterimage effect. A method to do this has also been proposed (backlight control method).

  When stereoscopic viewing is performed in this manner, the preferable stereoscopic effect varies depending on the user observing the stereoscopic image. Since the stereoscopic effect varies depending on the shift amount (parallax amount) of a plurality of stereoscopic images, an instruction to adjust the parallax amount of the stereoscopically displayed image is received, and stereoscopic viewing is performed according to the instructed parallax amount. A method for generating an image has been proposed (see Patent Document 1). In addition, there has been proposed a method of generating a stereoscopic image by adjusting the stereoscopic effect while stereoscopically viewing the displayed stereoscopic image (see Patent Document 2). In addition, a technique for adjusting a stereoscopic effect in a game has been proposed (see Patent Document 3).

JP 2004-129186 A JP-A-10-90814 JP 9-192349 A

  However, in the methods described in Patent Documents 1 to 3, although the stereoscopic effect can be changed by adjusting the parallax amount, the stereoscopic effect is adjusted while viewing the stereoscopically displayed image. It is difficult to see if it has been changed to some extent.

  The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to easily confirm the amount of parallax when adjusting the stereoscopic effect of a stereoscopic image.

The compound eye photographing apparatus according to the present invention includes two photographing means for obtaining two images by photographing at different positions,
Three-dimensional processing means for generating a stereoscopic image from the two images;
Display means capable of both two-dimensional display and stereoscopic display;
Input means for receiving an instruction to change the amount of parallax;
During stereoscopic display as a through image of the stereoscopic image, at least while the instruction to change the amount of parallax is performed, the stereoscopic display of the stereoscopic image is performed by superimposing the two images. In accordance with the instruction to change the amount of parallax, the two-dimensional display is performed by changing the amount of parallax between the two images, and after the instruction to change the amount of parallax has stopped, the two-dimensional display And a display control means for changing the display to the stereoscopic display.

In the compound eye photographing device according to the present invention, first determination means for determining whether or not the parallax amount has been changed to the adjustment limit value;
A second determination unit that determines whether or not the instruction to change the amount of parallax has been stopped;
The display control means may be means for continuing the change in the parallax amount until the determination by either the first or second determination means is affirmed.

  In the compound eye photographing apparatus according to the present invention, when the display control means is changed to the two-dimensional display, a numerical value indicating the parallax amount may be displayed on the display means.

  Further, in the compound eye photographing apparatus according to the present invention, when the stereoscopic display method is a backlight control method and the display means is a liquid crystal display means, the display control means is configured to perform the stereoscopic display. The backlight of the display means may be driven in a three-dimensional mode, and the backlight may be activated in the two-dimensional mode during the two-dimensional display.

  Further, in the compound eye photographing apparatus according to the present invention, when the display control unit is instructed to change the parallax amount, the display at the time of the stereoscopic display in the two images is performed according to the change amount of the parallax amount. It is good also as a means to display the range on the said display means so that visual recognition is possible.

  In addition, the compound eye photographing apparatus according to the present invention may further include notification means for notifying the presence of a portion where the amount of parallax in the two images is substantially zero.

  The compound eye photographing apparatus according to the present invention may further include a recording control unit that records the instructed change amount of the parallax amount on a recording medium in association with the two images.

The compound eye photographing method according to the present invention acquires two images by photographing at different positions,
Generating a stereoscopic image from the two images;
Stereoscopic display of the through image of the stereoscopic image on a display means capable of both two-dimensional display and stereoscopic display;
During stereoscopic display as a through image of the stereoscopic image, at least while the instruction to change the amount of parallax is performed, the stereoscopic display of the stereoscopic image is performed by superimposing the two images. Change to dimension view,
Receiving an instruction to change the amount of parallax;
In response to the instruction to change the amount of parallax, the amount of parallax between the two images is changed and two-dimensionally displayed.
After the parallax amount change instruction is stopped, the two-dimensional display is changed to the stereoscopic display after a predetermined time has elapsed.

An image display device according to the present invention includes a display unit capable of stereoscopically displaying a stereoscopic image generated from a plurality of images acquired by photographing at different positions.
3D processing means for performing 3D processing for stereoscopic display on the plurality of images to generate the stereoscopic image;
An input means for receiving an instruction to start changing the amount of parallax of the stereoscopic image and an instruction to change the amount of parallax;
In response to the instruction to start changing the amount of parallax, the stereoscopic display of the stereoscopic image is switched to two-dimensional display in which the plurality of images are overlaid, and in response to the instruction to change the amount of parallax, It is characterized by comprising display control means for changing the amount of parallax and performing two-dimensional display.

  In the image display device according to the present invention, when the stereoscopic display method is a backlight control method and the display unit is a liquid crystal display unit, the display control unit is configured to display the stereoscopic display. The backlight of the display means may be driven in a three-dimensional mode, and the backlight may be activated in the two-dimensional mode during the two-dimensional display.

  Further, in the image display device according to the present invention, when the parallax amount change instruction is given, the display control unit displays the stereoscopic image in the plurality of images according to the parallax amount change amount. It is good also as a means to display the range on the said display means so that visual recognition is possible.

  To make it possible to visually recognize the display range during stereoscopic display of multiple images, without changing the display size of multiple images, a frame is added around the displayed image, and the size of the frame is reduced. This means that the user can see and recognize the size of the area displayed at the time of stereoscopic display accompanying the change in the amount of parallax without changing the size of the plurality of images.

  The image display device according to the present invention may further include notification means for notifying the presence of a portion where the amount of parallax in the plurality of images is substantially zero.

  The “notification” can be performed by changing the color of the part in which the parallax amount is two-dimensionally displayed or by outputting a sound indicating that there is a part in which the parallax amount is zero.

  The image display apparatus according to the present invention may further include a recording control unit that records the instructed change amount of the parallax amount on a recording medium in association with the plurality of images.

  In the image display device according to the present invention, the display control unit may be a unit that switches the two-dimensional display to the stereoscopic display by receiving a predetermined operation after switching to the two-dimensional display.

  In the image display device according to the present invention, the display control means may be means for switching the two-dimensional display to the stereoscopic display after a predetermined time has elapsed after switching to the two-dimensional display.

  In the image display device according to the present invention, the display control means may be means for displaying the parallax amount during the two-dimensional display.

A photographing apparatus according to the present invention includes a plurality of photographing means for obtaining a plurality of images for performing stereoscopic display by photographing at different positions.
The image display apparatus according to the present invention is provided.

The image display method according to the present invention generates a stereoscopic image by performing a three-dimensional process on a plurality of images obtained by shooting at different positions.
Stereoscopically displaying the stereoscopic image,
Receiving an instruction to start changing the amount of parallax of the stereoscopic image;
In response to an instruction to start changing the amount of parallax, the stereoscopic display of the stereoscopic image is switched to a two-dimensional display in which the plurality of images are superimposed,
Receiving an instruction to change the amount of parallax;
In accordance with the instruction to change the amount of parallax, the parallax amount of the plurality of images is changed to perform two-dimensional display.

  The image display method according to the present invention may be provided as a program for causing a computer to execute the image display method.

  According to the present invention, when the user gives an instruction to start changing the amount of parallax, the stereoscopic display of a plurality of images is switched to a two-dimensional display in which a plurality of images are superimposed. For this reason, when the stereoscopic effect is adjusted by changing the parallax amount, it is easy to confirm how much the parallax amount of the plurality of images is.

  By the way, the stereoscopic display is performed using a range where a plurality of images overlap each other. For this reason, as the amount of parallax increases, the region that is trimmed from a plurality of images during stereoscopic display becomes smaller, and as a result, the stereoscopic image that is stereoscopically displayed is enlarged compared to the original image. It becomes. However, if the size of the image displayed in this way is changed, the user may be distracted and may not be able to determine an appropriate amount of parallax.

  For this reason, the display range in a plurality of images is displayed in a visually recognizable manner according to the amount of change in the amount of parallax, so that the displayed image is not enlarged, and the user concentrates on adjusting the amount of parallax. As a result, the amount of parallax can be changed efficiently.

  Also, when there is a part where the parallax amount is 0 in a plurality of images, by notifying that effect, the work is efficiently performed when it is desired to set the parallax amount of a desired part in the image to 0. be able to.

  In addition, when it is desired to change the stereoscopic effect later by storing the instructed change amount of the parallax in association with the original image before the three-dimensional processing is performed, the change to the original image is changed to 3 again. By performing the dimension processing, the stereoscopic effect can be changed.

The perspective view which shows the external appearance structure of the image display apparatus by embodiment of this invention. Schematic block diagram showing the internal configuration of the image display device according to the present embodiment The figure which shows the structure of the backlight of LCD of a backlight control system The figure for demonstrating the stereoscopic display in a backlight control system The figure for demonstrating the two-dimensional display in a backlight control system The figure which shows the state where it is displayed in two dimensions The flowchart which shows the process performed at the time of adjustment of a three-dimensional effect in this embodiment. The figure for demonstrating the change of the amount of parallax The figure which shows the inquiry screen of whether the present amount of parallax is preserved The figure which shows the file structure of the image file where the stereoscopic effect adjustment value is described in the header The flowchart which shows the process performed at the time of a stereoscopic display The figure for demonstrating the change of the trimming area | region by the amount of parallax The figure which shows the state which provided the black frame around the image for stereoscopic vision The figure which shows the state which changed the color of the part whose parallax amount is 0 A diagram showing the file structure of an image file in which two images are connected The figure which shows the aspect of a preservation | save with the image file and the text file of a stereoscopic effect adjustment value (the 1) The figure which shows the aspect of preservation | save with the image file and the text file of a stereoscopic effect adjustment value (the 2) The figure which shows the aspect of preservation | save with the image file and the text file of a stereoscopic effect adjustment value (the 3)

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an external configuration of an image display apparatus according to an embodiment of the present invention. As shown in FIG. 1, the image display device 1 according to the present embodiment includes a liquid crystal display (LCD) 2 and operation buttons 3 on the front. Further, the side surface is provided with a slot 5 into which a recording medium 4 such as a memory card is inserted. Then, the image display apparatus 1 according to the present embodiment stereoscopically displays on the LCD 2 a stereoscopic image generated from a plurality of images recorded by shooting at different positions recorded on the recording medium 4. Is. In the present embodiment, description will be made assuming that stereoscopic display is performed using two images GL and GR. The image GL is a left-eye image for stereoscopic display, and the image GR is a right-eye image.

  The operation button 3 includes an upper button 3U, a lower button 3D, a left button 3L, a right button 3R, and a center button 3C.

  FIG. 2 is a schematic block diagram showing the internal configuration of the image display apparatus according to the present embodiment. As shown in FIG. 2, the image display device 1 includes a recording control unit 21, a compression / decompression processing unit 22, a frame memory 23, an internal memory 24, a three-dimensional processing unit 25, a display control unit 26, and a CPU 27.

  The recording control unit 21 controls the recording and reading of information with respect to the recording medium 4 inserted into the slot 5. Further, as will be described later, the stereoscopic effect adjustment value based on the parallax amount changed by the user is described in the tags of the image files of the images GL and GR.

  The compression / decompression processing unit 22 performs compression and decompression processing of the two images GL and GR for performing stereoscopic display read from the recording medium 4. Based on the Exif format and the like, tags storing additional information such as a stereoscopic adjustment value and a shooting date and time are added to the image files of the images GL and GR.

  The frame memory 23 is a working memory used when various kinds of processing including three-dimensional processing, which will be described later, is performed on image data representing the images GL and GR, and is usually a dynamic RAM that is a volatile memory from the viewpoint of cost. Is used.

  The internal memory 24 stores various constants set in the image display device 1, a program executed by the CPU 27, and the like. Since the internal memory 23 uses a non-volatile memory so that the stored contents are not erased even when the power of the camera body is turned off, it is possible to record a photographed image in this memory.

  The three-dimensional processing unit 25 generates a stereoscopic image by performing a three-dimensional process on the images GL and GR so that the images GL and GR are stereoscopically displayed on the LCD 2. Here, any known method can be used as the method of stereoscopic display in the present embodiment. For example, a method of displaying the images GL and GR side by side and performing stereoscopic viewing by the naked eye balance method, or attaching a lenticular lens to the LCD 2 and displaying the images GL and GR at predetermined positions on the display surface of the LCD 2 It is possible to use a lenticular method in which images GL and GR are respectively incident on the eyes to realize stereoscopic display. Further, a barrier that changes the optical path to the left and right eyes is attached to the LCD 2 and the images GL and GR are displayed at predetermined positions on the display surface of the LCD 2 so that the images GL and GR are incident on the left and right eyes, respectively. A parallax barrier method for realizing visual display can be used.

  In addition, the images GL and GR are superimposed with different colors such as red and blue, for example, or the images GL and GR are superimposed with different polarization directions, so that the images GL and GR are combined and displayed stereoscopically. (Anaglyph method, polarization filter method) can be used. Further, the optical path of the backlight of the LCD 2 is optically separated so as to correspond to the left and right eyes, and the images GL and GR are alternately displayed on the display surface of the LCD 2 in accordance with the separation of the backlight left and right. Thus, a backlight control method that realizes stereoscopic display can be used.

  The LCD 2 is processed in accordance with the three-dimensional processing method performed by the three-dimensional processing unit 25. For example, when the stereoscopic display method is a lenticular method, a lenticular lens is attached to the display surface of the LCD 2, and when the parallax barrier method is used, a barrier is attached to the surface of the LCD 2. In the case of the backlight control system, an optical element for changing the light beam direction of the left and right images is attached to the display surface of the LCD 2. Here, in the present embodiment, it is assumed that the backlight control type stereoscopic display is performed. For this reason, the LCD 2 includes a left-eye backlight 2L and a right-eye backlight 2R as shown in FIG. In the following description, the optical path of the backlight 2L for the left eye is indicated by a solid line, and the optical path of the backlight 2R for the right eye is indicated by a broken line.

  The three-dimensional processing unit 25 performs image processing such as processing for adjusting white balance, gradation correction, sharpness correction, and color correction on the images GL and GR. In addition to the three-dimensional processing unit 25, an image processing unit that performs image processing may be provided.

  Note that the three-dimensional processing unit 25 changes the parallax amount of the images GL and GR according to the stereoscopic effect adjusted by the user using the operation buttons 3 as described later, and regenerates the stereoscopic image G3. Stereoscopic display is performed.

  The display control unit 26 stereoscopically displays the stereoscopic image G3 acquired by the three-dimensional processing or displays the images GL and GR in a two-dimensional manner in accordance with an instruction of the operation button 3 by the user.

  That is, in the case of performing stereoscopic display, as shown in FIG. 4, the lighting of the left-eye backlight 2L and the display of the left-eye image GL, the lighting of the right-eye backlight 2R and the display of the right-eye image GR are performed. Are switched at a high speed (for example, 60 Hz) to express a stereoscopic effect by the afterimage effect (three-dimensional mode). In FIG. 4, the backlight that is turned off is indicated by hatching. Further, the images GL and GR display only “L” and “R”, respectively.

  On the other hand, when two-dimensional display is performed, as shown in FIG. 5, the left-eye and right-eye backlights 2L and 2R are turned on simultaneously, and the left-eye image GL and the right-eye image GR are displayed at high speed. By switching with (two-dimensional mode), the two images GL and GR appear to overlap each other as shown in FIG.

  The CPU 27 controls each part of the image display device 1 according to an instruction from the operation button 3.

  The data bus 28 is connected to each unit constituting the image display device 1 and the CPU 27, and exchanges various data and various information in the image display device 1.

  Next, processing performed in the present embodiment will be described. FIG. 7 is a flowchart illustrating processing performed when adjusting the stereoscopic effect, that is, when changing the amount of parallax in the present embodiment. Here, three-dimensional processing is performed on the images GL and GR read from the recording medium 4 without changing the amount of parallax, and the stereoscopic image G3 generated thereby is stereoscopically displayed on the LCD 2. It shall be. When the stereoscopic image G3 is stereoscopically displayed, the CPU 27 starts processing, and accepts an instruction to start changing the amount of parallax using the operation button 3 by the user (step ST1). Here, it is assumed that the instruction to start changing the parallax amount is performed using, for example, the center button 3 </ b> C of the operation button 3. Thereby, the display control unit 26 changes the display dimension of the currently displayed image to two-dimensional display (step ST2). A two-dimensional display is performed on the LCD 2 so that the two images GL and GR appear to overlap each other as shown in FIG. Note that the parallax amount between the two images GL and GR may be displayed during two-dimensional display. In FIG. 6, “parallax amount: 10” is displayed. Furthermore, the CPU 27 receives an instruction to change the amount of parallax using the operation button 3 by the user (step ST3).

  FIG. 8 is a diagram for explaining the change in the amount of parallax. In FIG. 8, the solid line indicates the display range of the LCD 2, the broken line indicates the image GL, and the alternate long and short dash line indicates the image GR. The image GL is shifted by -XL0 and the image GR is shifted by XR0 from the predetermined parallax reference. It is shown that. Further, although the images GL, GR and the LCD 2 have the same size in the vertical direction, the sizes in the vertical direction are shown as being different for easy understanding. Since the images GL and GR are obtained by photographing the same subject at different positions, when the images GL and GR are overlapped, the subjects included in the images GL and GR have a predetermined amount of parallax ( In FIG. 8, it has XR0 + XL0). For this reason, it is possible to perform stereoscopic viewing by generating a stereoscopic image by performing three-dimensional processing on the images GL and GR, and displaying this stereoscopically.

  However, since the preferable stereoscopic effect differs depending on the user, in this embodiment, the parallax amount of the images GL and GR is changed by receiving an instruction to change the parallax amount by the user using the operation button 3. Is. For example, in the present embodiment, the amount of parallax is changed by pressing the left button 3L of the operation button 3 and the amount of parallax is increased by pressing the right button 3R. When the parallax amount is displayed, the displayed parallax amount is changed by operating the right button 3R and the left button 3L.

  Next, the CPU 27 determines whether or not the parallax amount has been changed to the adjustment limit value (step ST4). The parallax amount adjustment limit value is, for example, an adjustment value that causes the images GL and GR to move to the opposite ends of the images. If step ST4 is negative, it is determined whether or not the adjustment instruction is stopped by releasing the hand from the operation button 3 (step ST5). If step ST5 is negative, the process returns to step ST4. If step ST4 is affirmed, the change of the amount of parallax is stopped (step ST6), a warning display indicating that the stereoscopic effect cannot be changed any longer is displayed on the LCD 2 (step ST7), and the process proceeds to step ST5. Thus, the parallax amount is continuously changed so as to become the instructed parallax amount until the parallax amount reaches the adjustment limit value or until the user releases the operation button 3.

  If step ST5 is affirmed, the CPU 27 determines whether or not there has been an instruction to switch the display dimension using the operation button 3 (step ST8). Here, the display dimension switching instruction is performed using, for example, the center button 3 </ b> C of the operation button 3. If step ST8 is positive, the display control unit 26 changes the display dimension of the image to stereoscopic display (step ST9), and the process returns to step ST8.

  If there is no display dimension switching instruction within the predetermined time, step ST8 is denied, and the CPU 27 displays on the LCD 2 an inquiry screen as to whether or not to save the current amount of parallax as shown in FIG. 9 (step ST10). ). When there is an instruction to switch the display dimension, the process of step ST10 may be performed immediately after changing the display dimension of the image to stereoscopic display by operating the center button 3C. The user can select YES or NO using the operation button 3. If NO is selected, the process returns to step ST1. When YES is selected, the recording control unit 21 describes the current amount of parallax as a stereoscopic effect adjustment value in the headers of the images GL and GR (step ST11), and records the images GL and GR on the recording medium 4 (step ST12). ), The process is terminated. The images GL and GR recorded on the recording medium 4 are overwritten by the images GL and GR in which the stereoscopic effect adjustment value is described in the header.

  FIG. 10 is a diagram showing the file structure of image files GL and GR in which the stereoscopic effect adjustment value is described in the header. As shown in FIG. 10, the image files FL and FR of the images GL and GR include headers HL and HR and main images which are entities of the images GL and GR (using the same reference numerals GL and GR as the images), respectively. Three-dimensional effect adjustment values are described in the headers HL and HR. For example, XL1 is described as the stereoscopic effect adjustment value in the header HL of the image GL, and XR1 is described as the stereoscopic effect adjustment value in the header HR of the image GR.

  The stereoscopic effect adjustment values XL1 and XR1 are calculated from the amount of parallax. For example, when the parallax amount is 6, when the parallax reference is set between the image GL and the image GR, XL1 = 3 and XR1 = 3. It is also possible to set the parallax reference to the image GL, in which case XL1 = 0 and XR1 = 6. Note that the method for calculating the stereoscopic effect adjustment value is not limited to the above example, and may be performed by a method that is most easy to use in the system.

  In the above process, it is determined whether or not a display dimension switching instruction is given in step ST8, and when the switching instruction is given, the display dimension of the image is changed to stereoscopic display. After a predetermined time has elapsed, the display dimension of the image may be changed to stereoscopic display.

  Next, a process performed when stereoscopically displaying the images GL and GR recorded on the recording medium 4 in the present embodiment will be described. FIG. 11 is a flowchart showing processing performed during stereoscopic display. When an instruction for stereoscopic display of an image is given using the operation button 3, the CPU 27 starts processing, and the recording control unit 21 reads the images GL and GR to be displayed from the recording medium 4 and temporarily stores them in the frame memory 23. (Step ST21). Then, the three-dimensional processing unit 25 determines whether or not the stereoscopic effect adjustment value is described in the headers of the images GL and GR (step ST22). When step ST22 is affirmed, the stereoscopic effect adjustment values described in the headers of the images GL and GR are read (step ST23), and the images GL and GR are set to have a parallax amount based on the read stereoscopic effect adjustment values. A stereoscopic image G3 is generated by performing a three-dimensional process with the parallax amount changed (step ST24). Then, the display control unit 26 stereoscopically displays the stereoscopic image G3 on the LCD 2 (step ST25), and the process ends.

  On the other hand, if step ST22 is negative, a three-dimensional process is performed on the images GL and GR without changing the amount of parallax to generate a stereoscopic image G3 (step ST26), and the process proceeds to step ST25. The stereoscopic image G3 is stereoscopically displayed, and the process ends.

  As described above, in the present embodiment, since the stereoscopic display of the images GL and GR is switched to the two-dimensional display when the parallax amount is changed, it is possible to check how much the parallax amount of the images GL and GR is. It becomes easy.

  Further, since the stereoscopic effect adjustment value is described in the header of the original images GL and GR before the three-dimensional processing is performed and is recorded on the recording medium 4, when the stereoscopic effect is to be changed later, the original image is changed again. The three-dimensional effect can be changed by performing three-dimensional processing on the images GL and GR.

  In addition, since the stereoscopic effect adjustment value is described in the headers HL and HR of the image files FL and FR of the images GL and GR, the stereoscopic image described in the headers HL and HR is displayed when the images GL and GR are stereoscopically displayed. If three-dimensional processing is performed so that the parallax amount based on the feeling adjustment value is obtained, the images GL and GR can be stereoscopically displayed so as to have a stereoscopic effect that is preferred by the user who has changed the parallax amount. For this reason, it is not necessary for the user to change the amount of parallax each time stereoscopic display is performed, and as a result, the burden on the user can be reduced.

  In the above embodiment, the stereoscopic display method is described as the backlight control method, but a stereoscopic display method other than the backlight control method, for example, a backlight such as a lenticular method and a parallax barrier method. When performing stereoscopic display using a method other than the control method, when performing two-dimensional display, the three-dimensional processing is not performed, and the images GL and GR are only made semi-transparent and superimposed, as shown in FIG. It is possible to make two images GL and GR appear to overlap each other.

  Here, when performing the stereoscopic display, the larger the amount of parallax between the images GL and GR, the narrower the range in which the images GL and GR overlap each other, and thus the display range when performing the stereoscopic display is narrowed. That is, as shown in FIG. 12, when the amount of parallax between the images GL and GR is small, the display range where the images GL and GR overlap each other is the area A1 in FIG. 12, but when the amount of parallax increases, the amount of parallax is small As compared with the image A, the display range where the images GL and GR overlap each other becomes smaller as shown in the area A2. The aspect ratios of the images GL and GR and the areas A1 and A2 are the same.

  The stereoscopic display is performed using a range where the images GL and GR overlap each other. For this reason, as the amount of parallax increases, the area trimmed from the images GL and GR in the stereoscopic display becomes smaller, and as a result, the stereoscopic image G3 displayed stereoscopically on the LCD 2 is enlarged. In this embodiment, when changing the amount of parallax, the stereoscopic image G3 displayed stereoscopically according to the amount of parallax may be displayed by changing the size by enlarging or reducing the displayed image. If the size is changed, the user may be distracted by it and may not be able to determine an appropriate amount of parallax.

  For this reason, according to the amount of change in the parallax amount, the stereoscopic display is performed as shown in FIG. 13 so that the range actually displayed on the LCD 2 during the stereoscopic display, that is, the trimmed range in the images GL and GR can be seen. For example, a black frame may be provided around the stereoscopic image. Thereby, since the user can concentrate on the adjustment of the parallax amount, the parallax amount can be adjusted efficiently.

  Note that the addition of the frame can be performed in the same way during stereoscopic display and during two-dimensional display.

  On the other hand, if the amount of parallax becomes too large, stereoscopic viewing cannot be performed appropriately. For this reason, when the amount of parallax becomes so large that stereoscopic viewing is impossible, the color of the frame may be changed to notify the user to that effect. In this case, according to the amount of parallax, for example, as the amount of parallax increases, the color of the frame may be changed step by step, such as blue, yellow, and red.

  Moreover, in the said embodiment, when changing the amount of parallax, the part from which the amount of parallax becomes 0 appears on the images GL and GR. In this case, the color of the portion where the amount of parallax in the stereoscopic image G3 is 0 may be changed so that the portion where the amount of parallax is 0 is known. For example, in the two-dimensionally displayed images GL and GR shown in FIG. 14, when the parallax amount of the person's face is 0, the person's face color is changed to a predetermined color (for example, red). It may be. In FIG. 14, the color is changed by hatching. Thereby, the user can easily recognize a portion where the parallax amount is zero. It should be noted that the color of the portion where the parallax amount in the stereoscopic image G3 can be similarly changed during the stereoscopic display.

  In addition, when there is a portion where the parallax amount is 0, that fact may be notified by voice.

  In the above embodiment, the stereoscopic effect adjustment value is described in the headers HL and HR of the image files FL and FR of the images GL and GR. However, as shown in FIG. There are cases where it is configured as one image file F1. In such a case, the stereoscopic effect adjustment values of both the images GL and GR may be described in the header H1 of the image file F1.

  The images GL and GR and the stereoscopic effect adjustment value may be stored as separate files. For example, as shown in FIG. 16, the image files FL and FR of the images GL and GR and the text file T1 describing the stereoscopic effect adjustment value may be stored in the same folder D1. In this case, a copy of the image files FL and FR of the original images GL and GR may be stored in the same folder D1 together with the text file T1, and the original images GL and GR are moved from the storage destination folder and the text The file T1 may be saved in the same folder D1.

  In particular, when the images GL and GR are stored as the same image file F1, as shown in FIG. 17, the plurality of image files F1 and F1 ′ and the text file T1 describing the stereoscopic effect adjustment value are the same. You may make it preserve | save in the folder D1. In this case, in the text file T1, the stereoscopic effect adjustment values of all the images stored in the folder D1 are described in association with the image files F1 and F1 ′.

  In addition, as shown in FIG. 18, a folder D1 that stores only a plurality of image files F1 and F1 ′ and a folder D2 that stores a text file T0 describing a stereoscopic effect adjustment value may be separated. In this case, in the text file T0, the stereoscopic effect adjustment values of all the images stored in the folder D1 are described in association with the image files F1 and F1 ′.

  In the above embodiment, the input of the image to the image display device 1 is to read the image from the recording medium 4, but the present invention is not limited to this, and the image is input from the image server connected by the network. You may make it input, and you may make it input an image by non-contact communication etc.

  Further, the image display device 1 according to the above-described embodiment may be applied to a compound eye photographing device including a plurality of photographing units. In this case, it is possible to immediately display a plurality of images acquired by photographing, change the amount of parallax, and record it on the recording medium 4. In this case, it is also possible to change the amount of parallax while displaying a through image before shooting. In that case, after changing the display dimension of the image to two-dimensional display and changing the amount of parallax The display dimension of the image may be changed to stereoscopic display by pressing the release button halfway. Further, the display dimension of the image may be changed to stereoscopic display after a predetermined time has elapsed after the change in the amount of parallax.

  Although the apparatus 10 according to the embodiment of the present invention has been described above, the computer is caused to function as a unit corresponding to the three-dimensional processing unit 25, the recording control unit 21, and the display control unit 26, as illustrated in FIGS. A program for performing a simple process is also one embodiment of the present invention. A computer-readable recording medium in which such a program is recorded is also one embodiment of the present invention.

1 Image display device 2 LCD
3 Operation Button 4 Recording Media 5 Slot 21 Recording Control Unit 25 3D Processing Unit 26 Display Control Unit

Claims (9)

Two photographing means for obtaining two images by photographing at different positions;
Three-dimensional processing means for generating a stereoscopic image from the two images;
Display means capable of both two-dimensional display and stereoscopic display;
Input means for receiving an instruction to change the amount of parallax;
During stereoscopic display as a through image of the stereoscopic image, at least while the instruction to change the amount of parallax is performed, the stereoscopic display of the stereoscopic image is performed by superimposing the two images. In accordance with the instruction to change the amount of parallax, the two-dimensional display is performed by changing the amount of parallax between the two images, and after the instruction to change the amount of parallax has stopped, the two-dimensional display And a display control means for changing the display to the stereoscopic display. First determination means for determining whether or not the parallax amount has been changed to an adjustment limit value;
A second determination unit that determines whether or not the parallax amount change instruction is stopped;
2. The compound eye photography according to claim 1, wherein the display control unit is a unit that continues the change of the parallax amount until a determination by any one of the first and second determination units is affirmed. apparatus.   3. The compound eye photographing apparatus according to claim 1, wherein the display control means is means for displaying a numerical value representing the parallax amount on the display means when the display control means is changed to the two-dimensional display.   When the stereoscopic display method is a backlight control method and the display means is a liquid crystal display means, the display control means sets the backlight of the display means in a three-dimensional mode during the stereoscopic display. The compound eye photographing apparatus according to any one of claims 1 to 3, wherein the compound eye photographing device is a means for driving and activating the backlight in a two-dimensional mode during the two-dimensional display.   When there is an instruction to change the amount of parallax, the display control unit displays the display range at the time of the stereoscopic display in the two images on the display unit according to the amount of change of the parallax. The compound eye photographing apparatus according to claim 1, wherein the compound eye photographing apparatus is a means.   6. The information processing apparatus according to claim 1, further comprising: a notification unit configured to notify the presence of the part when the amount of parallax between the two images is substantially zero. 6. Compound eye photography device.   7. The compound eye photographing apparatus according to claim 1, further comprising a recording control unit that records the instructed change amount of the parallax amount on a recording medium in association with the two images. . Two images are acquired by shooting at different positions,
Generating a stereoscopic image from the two images;
Stereoscopic display of the through image of the stereoscopic image on a display means capable of both two-dimensional display and stereoscopic display;
During stereoscopic display as a through image of the stereoscopic image, at least while the instruction to change the amount of parallax is performed, the stereoscopic display of the stereoscopic image is performed by superimposing the two images. Change to dimension view,
Receiving an instruction to change the amount of parallax;
In response to the instruction to change the amount of parallax, the amount of parallax between the two images is changed and two-dimensionally displayed.
A compound eye photographing method, wherein the two-dimensional display is changed to the stereoscopic display after a predetermined time elapses after the instruction to change the parallax amount is stopped. A procedure for acquiring two images by shooting at different positions;
Generating a stereoscopic image from the two images;
A procedure for stereoscopically displaying the through image of the stereoscopic image on display means capable of both two-dimensional display and stereoscopic display;
During stereoscopic display as a through image of the stereoscopic image, at least while the instruction to change the amount of parallax is performed, the stereoscopic display of the stereoscopic image is performed by superimposing the two images. To change to dimension view,
A procedure for receiving an instruction to change the amount of parallax;
In accordance with the instruction to change the amount of parallax, a procedure for changing the amount of parallax between the two images and performing two-dimensional display;
A program for causing a computer to execute a compound eye photographing method including a procedure for changing the two-dimensional display to the stereoscopic display after a predetermined time has elapsed after stopping the parallax amount change instruction.