JP4815042B2 - Image display device and image presentation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image display device and an image presentation method, and more particularly to an image display device and an image presentation method suitable for observing a stereoscopic image.
[0002]
[Prior art]
There are a wide variety of methods for capturing and recording three-dimensional information in an image and reproducing it. Among them, the simplest, cheapest and most effective one is that two images having parallax corresponding to the viewpoints of the left and right eyes are recorded and presented to the left and right eyes respectively, so-called 2 The ocular stereo system has been used from the old days to today.
[0003]
There are also various presentation methods in this binocular stereo. For example, when performing simultaneous observation of a large number of people on a large screen, a polarization projection method using polarized glasses or a time-sharing presentation method using shutter glasses is used. However, since these are large and require expensive systems, they are rarely used except for special business purposes. Therefore, for so-called personal use, there is a restriction that only one person can observe at the same time, but the method using stereo pair images, which is the most basic and classic method, can observe clear images at a very low cost. As a method, it is still widely used today.
[0004]
To describe this stereo pair image in detail, an L image that is an image corresponding to the left eye viewpoint and an R image that is an image corresponding to the right eye viewpoint are usually arranged in parallel with a small gap between two images. It is composed. The LR image is actually one standard horizontal position image (horizontal 3: vertical) due to restrictions on the system of 35 mm single-lens reflex camera + stereo adapter, which is widely used as the most convenient image capturing device of this type. 2) is vertically divided into two, and therefore each image, that is, the stereoscopic image to be observed is generally in a vertical position (aspect ratio of about 3: 4).
[0005]
In the present specification, an image in which LR2 images are arranged spatially (on the image plane) to form one image is referred to as a stereo pair image. The specific configuration (numerical values and the like) described above is merely an example, but for the sake of simplicity, the description will be made on the assumption that the specific example is taken as an example unless otherwise specified.
[0006]
This stereo pair image
(1) No special system is required for recording, printing, transmission, printing, etc.
(2) If appropriate conditions are satisfied, direct stereoscopic observation is possible (the fusion of left and right images can be performed without using any device).
It has an extremely excellent feature.
[0007]
Specifically, regarding (2), a state in which the LR image is correctly captured by the left and right eyes and is recognized as one stereoscopic image instead of two different images is referred to as fusion of the left and right images. Specifically, if it is of “parallel arrangement” (L is placed on the left and R is placed on the right) printed with a lateral width slightly smaller than twice the eye width = 10 to 13 cm, the line of sight is also observed during observation. Fusion can be achieved by using the so-called “parallel method” (although some practice may require some practice). On the other hand, the “crossing arrangement” in which the left and right images are interchanged is also used, and there is no restriction on the print size, and it is possible to directly observe stereoscopic vision by the “crossing method” that intersects the lines of sight. Since the fatigue and unnaturalness during stereoscopic observation (small garden phenomenon) are somewhat large, the parallel arrangement is more prevalent.
[0008]
In any case, stereo pair images that have two major features of (1) regardless of the system (2) that can be directly observed are excellent in compatibility. As so-called media mix progresses, its immortal value will be reviewed and expected to continue to be used.
[0009]
On the other hand, for direct observation of stereo pair images
(A) Even if it is a relatively easy parallel method, some practice is required (stereoscopic view = individual differences in difficulty of image fusion are large)
(B) Large unnaturalness (scrimming, miniature garden effect) due to large discrepancy between tension (focus information) for focusing parallax information and eyeballs
(C) In the parallel method, the image size is limited.
There are problems such as. In other words, although this direct observation method has the basic advantage that the left and right images can be fused without using tools, it is not sufficient for the purpose of easily performing high-quality observation with a high sense of reality. It is. Therefore, a stereo viewer, which is an auxiliary optical system for observation, has been used conventionally. Known viewers include so-called print viewers and slide viewers. An example of the former is also described in Japanese Patent Application Laid-Open No. 07-110536.
[0010]
[Problems to be solved by the invention]
Since the publication described in the above publication is a print viewer, a printed stereo pair image can be observed with high image quality. For example, a stereo pair image in a multimedia medium such as a digital stereo pair image taken by a digital camera ( (Stereo Pear in Multimedia: hereinafter referred to as SPM) has a problem that it cannot be applied unless it is printed.
[0011]
In detail, even if it is such an SPM, a stereo pair image is simply displayed when displayed on the screen of a general-purpose personal computer, which should be a platform for a multimedia environment. It is the same situation as the above (2), and no new trouble occurs. However, the direct observation has the problems (a) to (c) as described above, and improvement is necessary. Although printing and applying the print viewer is one measure, it cannot be reproduced if the image quality of the printer is poor, and it takes time to print and consumes paper and ink. Clearly, it is not an essential solution, such as difficulties.
[0012]
The present invention has been made in view of the above circumstances. First, a stereo image (SPM) can be used to easily perform high-quality observation with a high sense of reality, and second, a stereo image. An object of the present invention is to provide an image display device and an image presentation method that can be used without problems even in a situation where normal and non-stereo images (monocular or monoscopic images) are mixed.
[0013]
[Means for Solving the Problems]
  In order to solve the above-described problems, an image display device according to the present invention includes:Includes a display for left-eye display and a display for right-eye displayDisplay means;Input an input image signal to be displayed and reproduced to be displayed on each of the display unit for left eye display and the display unit for right eye display.Input means;A stereo pair image signal, which is an image signal of a stereo pair image in which the left eye viewpoint image and the right eye viewpoint image are spatially juxtaposed to form one image, is input to the display / reproduction target by the input means. When input as a signal, a stereo pair image signal that is an input image signal to be displayed and reproduced for the display unit for left eye display and a stereo pair that is an input image signal to be displayed and reproduced for the display unit for right eye display An image shift process is performed in which different shift processes are performed on the image signal, and two types of stereo pair image signals after the image shift process are sent to the display meansImage signal shift means and shift amount variable setting for manually setting the image shift amount in the image signal shift meansswitchAnd the image signal shifting means is configured to variably set the shift amount.Setting of image shift amount by switchBased onThe relative position of the left-eye viewpoint corresponding image with respect to the display image frame of the display unit for the left-eye display and the relative position of the right-eye viewpoint corresponding image with respect to the display image frame of the display unit for the right eye display are aligned. In addition,The image shift process is performed.
[0014]
  In the present invention, when the stereo image signal is input by the input means and the left eye viewpoint corresponding image and the right eye viewpoint corresponding image are displayed to the left eye and the right eye by the display means, the stereo image An image signal shift means for performing different image shift processing on the signal between the left-eye viewpoint corresponding image and the right-eye viewpoint corresponding image, and setting of an image shift amount in the image signal shift means by manual operation Shift amount variable setting means is provided, and the image signal shift means performs the image shift processing based on the setting of the shift amount variable setting means.
[0015]
  The image signal shift means is configured such that a relative position of the left-eye viewpoint corresponding image with respect to a display image frame of the display means and a relative position of the right-eye viewpoint corresponding image with respect to the display image frame are both left eye and right eye viewpoints. The image shift processing is performed so that the corresponding images are aligned, and the image shift processing is performed based on the setting of the shift amount variable setting means or the stored setting as fine adjustment. . As a result,On the virtual screen presented by separate display for the left and right eyesLeft eye viewpoint compatible image (L image)WhenRight eye viewpoint compatible image (R image)Can be brought close to each other within a range where they can be fused together.Then, as a fine adjustment, an image shift process based on the setting of the shift amount variable setting means or the setting stored therein is performed.Therefore, even when magnified image observation is performed by FMD, stereoscopic image observation by SPM can be easily performed, and high-quality observation with high presence can be realized.
[0016]
Here, the purpose of the image shift process is to increase the degree of fusion of the L image and the R image, and therefore the relative positional relationship between the L image and the R image in the left eye image and the right eye image respectively does not necessarily match completely. There is no need to let them. In this sense, the above-described image shift process for aligning the relative positions may be any shift process that facilitates the fusion of the L image and the R image, and the L image on the left eye image on the virtual display screen. And the R image on the right eye image may be included in a range that can be fused.
[0017]
Moreover, it is preferable to perform an image shift process based on the image width of the input stereo pair image. As a result, even if the relative position of the LR image with respect to the image frame of the entire input image signal is unknown, for example, on the left eye image side, the image signal is shifted to the right by 1/4 of the image width of the stereo pair image, and the right On the eye image side, appropriate image shift processing can be easily performed by shifting the image signal to the left by 1/4 of the image width of the stereo pair image. Of course, if the shift amount of one of the left eye image and the right eye image is set to ½ of the image width of the stereo pair image, it is possible to perform the so-called zero shift processing in which the other image is not shifted. is there. Including such zero shift processing, the left eye image and the right eye image are subjected to different image shift processing.
[0018]
Further, when it is detected that the image signal input by the input means is a stereo pair image signal by further providing a stereo pair image detection means for detecting whether the image signal is the stereo pair image signal, the input image is detected. The image shift process is automatically executed on the signal, and when it is detected that the image signal is a non-stereo pair image signal, it is possible to control the execution of the image shift process on the input image signal. It is possible to realize an appropriate image display suitable for the input image signal even in an environment in which both are mixed.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the configuration of an image display apparatus according to an embodiment of the present invention. The image display device 100 is a viewer for realizing high-quality image observation of a stereoscopic image using SPM, and is realized as a face-mounted display (FMD), for example. In the figure, 111 is a system controller (CPU) for comprehensively controlling the operation of the entire apparatus, 112 is an operation switch system including various operation buttons, and 113 is an operation display system for displaying operation states, mode states, and the like. 114 denotes a digital process circuit having various image signal processing functions, and 115 denotes an LCD image display system.
[0020]
The LCD image display system 115 displays the left eye image and the right eye image, which are display images for the left and right eyes, separately for the left and right eyes, thereby virtually displaying the left eye image and the right eye image. Two LCDs for presenting a magnified composite image to the observer as a virtual display screen, an LCD display device (DL) 115a for displaying a left eye image and an LCD display device (DR) 115b for displaying a right eye image Has a display device.
[0021]
In the figure, reference numeral 116 denotes a memory card interface, 117 denotes a memory card, and 118 denotes a nonvolatile memory (EEPROM) for storing various setting information.
[0022]
The memory card 117 is for recording an image signal to be displayed and reproduced. Here, the above-described SPM composed of electronic stereo pair images and other normal non-stereo images are stored in known image formats (BMP, JPEG etc.).
[0023]
In the image display apparatus 100 of the present embodiment, under the control of the system controller 111, an image signal to be displayed and reproduced is read from the memory card 117, and this is input to the LCD image display system 115 as an input image signal to be displayed and reproduced. Sent and displayed individually on the two display devices 115a and 115b. Normally, the same image is displayed on the two display devices 115a and 115b (monocular mode). However, when the SPM as an electronic stereo pair image is read from the memory card 117 and displayed, the left eye image is displayed. The image signals after the shift processing different from each other on the side and the right eye image side are respectively displayed from the display devices 115a and 115b as a left eye image and a right eye image (stereo mode).
[0024]
That is, the system controller 111 is provided with a stereo pair image shift processing unit 201 as shown in the figure, and the above-described shift processing is executed by the stereo pair image shift processing unit 201 in the stereo mode. The details of this shift processing will be described later with reference to FIG. 5 and thereafter, but is basically performed to match the position of the L image on the left eye image side with the position of the R image on the right eye image side. By this shift processing, when the left eye image and the right eye image are observed with both the left and right eyes, the SPM L image on the left eye image side and the SPM R image on the right eye image side are merged as one stereoscopic image. As a result, it is possible to easily observe a high-quality stereoscopic image with high presence.
[0025]
(SPM)
FIG. 2 shows an example of the configuration of the SPM used in the present embodiment.
As described above, the SPM is composed of two images L and R (PL and PR) juxtaposed so as to divide one image space into two. The L image (PL) is a left-eye viewpoint corresponding image, and the R image (PR) is a right-eye viewpoint corresponding image. The width of the SPM is W pixels and the height is H pixels. In addition, the aspect ratio of the SPM handled here is H = W × 2/3 in accordance with a general film camera format.
[0026]
(FMD)
FIG. 3 schematically shows the configuration of the display unit in the FMD used in the present embodiment. FIG. 3 is a top view of the FMD worn by the observer.
[0027]
The LCD display device (DL) 115a and the loupe optical system (LL) 116a are attached to the position corresponding to the left eye of the FMD frame 10 having a glasses shape, and the LCD display described above is attached to the position corresponding to the right eye. A device (DR) 115b and a magnifying optical system (LR) 116b are attached. The loupe optical systems 116a and 116b are magnifying optical systems for realizing the FMD original image enlargement function and the image distance conversion function. By presenting them individually, for example, a virtual display screen having a diagonal of about 100 inches is displayed 1 m in front of the eyes.
[0028]
Further, the FMD frame 10 is provided with a stereo / monocular switch 112a. The stereo / monocular switch 112a is one operation switch in the operation switch system 112 of FIG. 1, and is used for switching between the stereo mode / monocular mode described above.
[0029]
(Interface box)
When an actual FMD is realized, not only the structure (reproducing device) having the function of the block diagram of FIG. 1 in its main body but also a display output from a personal computer or a digital camera, for example, An FMD having only a display system in the main body is also conceivable. In this case, as shown in FIG. 4, an interface box 20 that receives a display output from an image signal output device 30 such as a personal computer or a digital camera as an input image signal is prepared, and the FMD 10 is connected from the interface box 20 through a cable or the like. The input image signal may be led to
[0030]
At this time, since the FMD 10 simply displays the received image signal as it is, the above-described shift processing function is executed by the image shift processing unit 20 a provided in the interface box 20. As the image shift processing unit 20a, for example, a buffer memory that holds an input image signal from the image signal output device 30, and address control at the time of reading the image signal from the buffer memory are independent for the left eye image and the right eye image. It can be realized by a memory control circuit that can be variably set. As a specific example, “the buffer memory and the memory control circuit have two independent left and right systems” “the buffer memory has one system (common to both left and right), and read address control is time-division time-sequential (double-speed reading). 2), the left and right are separated by left and right independent (two systems) latch circuits. The interface box 20 is provided with a stereo / monocular switch similar to that described above, and a shift amount variable setting switch for manually setting the shift amount S for the input image signal.
[0031]
The setting of the shift amount S is basically performed manually by the observer himself by operating the shift amount variable setting switch, but once the set value is recorded in the EEPROM in the interface box 20, The resetting operation can also be simplified.
[0032]
(Image display operation 1)
Next, the image display operation will be described by exemplifying a case where the FMD is realized as a playback apparatus having the function of the block diagram of FIG.
[0033]
<Monocular mode>
When the monocular mode is selected with the stereo / monocular selector switch 112a, it is the same as before, so a display image (hereinafter referred to as IL) displayed as a left-eye image on the LCD display device (DL) 115a, and an LCD display device The display image (hereinafter referred to as IR) displayed as the right eye image on (DR) 115b is exactly the same.
[0034]
At this time, since the image size of the virtual image displayed on the virtual screen becomes large, if it is displayed on a normal 20-inch CRT display, a stereo pair image in which a stereoscopic image can be directly observed by the parallel method. In the FMD, for example, as described above, the virtual display screen having a diagonal size of about 100 inches is displayed 1 m in front of the eyes as described above. Both of these display image sizes exceed the range in which stereoscopic images can be observed by the parallel method, and fusion of the left and right images is usually impossible.
[0035]
<Stereo mode>
When the stereo mode is selected with the stereo / monocular switch 112a, a shift process is performed on the input image signal to be displayed. Here, the principle of the shift process will be described with reference to FIG.
[0036]
Since the system controller 111 in FIG. 1 recognizes the SPM image size that is the display target input image signal, the shift amount S is set to ¼ of the SPM image width W. Then, the left eye image and the right eye image are subjected to different shift processing on the SPM, and the left eye display image IL is shifted rightward by W / 4 pixels as shown in FIG. The right eye display image IR is shifted leftward by W / 4 pixels.
[0037]
FIG. 5 shows an example in which the entire input image signal for each of the LCD display devices 115a and 115b is shifted. The left end of the IL display image frame displayed by the LCD display device 115a is a blank area for W / 4 pixels. The SPM LR image moves by W / 4 pixels to the right of the original display position. At this time, the display position of the L image (PL) is set to the SPM image frame center position (the boundary position between PL and PR) in the normal display (monocular mode) which is a non-stereo display. Similarly, the right end of the IR display image frame displayed by the LCD display device 115b is a blank area of W / 4 pixels, and the SPM LR image is moved to the left of the original display position by W / 4 pixels. Will do. At this time, the display position of the R image (PR) is set to the SPM image frame center position (the boundary position between PL and PR) in the normal display (monocular mode) which is non-stereo display.
[0038]
By such shift processing, the relative position of the L image (PL) with respect to the IL display image frame and the relative position of the R image (PR) with respect to the IR display image frame are set to be equal. Here, the state of the virtual display screen obtained when IL and IR are observed with both the left and right eyes will be described. 6 shows a virtual display screen when the SPM is displayed in a non-stereo display (monocular mode), and FIG. 7 shows a virtual display screen when the SPM is displayed in a stereo display (stereo mode).
[0039]
As can be seen from FIG. 6, the virtual display screen corresponds to an image obtained by superimposing the IL display image frame and the IR display image frame so as to coincide with each other, and is thus observed in a non-stereo display. Is an image obtained by combining the L images (PL) and the R images (PR) between the display images of IL and IR.
[0040]
On the other hand, when the stereo mode is used, as shown in FIG. 7, the relative relationship between the L image (PL) in the IL display image frame and the R image (PR) in the IR display image frame. Since the positional relationship is the same, the L image (PL) observed with the left eye and the R image (PR) observed with the right eye are easily recognized as one stereoscopic image, and the degree of fusion of both images is remarkably increased. It becomes possible to raise.
[0041]
That is, the shift process of the present embodiment is a kind of centering process in which the relative positional relationship of the left and right images with respect to the left eye and the right eye is matched. Therefore, the same effect can be obtained by setting the L image (PL) at the center of the IL display image frame and setting the R image (PR) at the center of the IR display image frame. Actually, when the SPM is displayed at the center of the IL and IR display image frames in the normal non-stereo display, the L image (PL) is set at the center of the IL display image frame by the above-described shift processing. The R image (PR) is set at the center of the IR display image frame. Further, in terms of fusion of images during observation, the relative position of the L image (PL) with respect to the IL display image frame and the relative position of the R image (PR) with respect to the IR display image frame are not necessarily completely coincident. The center position of the L image (PL) and the center position of the R image (PR) are close to each other so that the L image (PL) and the R image (PR) are observed in an overlapping manner on the virtual screen. The shift process may be performed.
[0042]
In this embodiment, the shift amount S is determined based on the image width of the SPM. However, this is sufficient if only the image width is recognized without recognizing the image frame position of the SPM in the input image signal. This is to obtain a good centering effect.
[0043]
Although the value of the shift amount S is basically automatically determined based on the image width, it is preferable that fine adjustment is possible in order to improve the visibility of the stereoscopic image. For example, the fine adjustment data is recorded in the EEPROM 118 in advance, and the value of the shift amount S can be increased or decreased by using the fine adjustment data based on the switch operation by the user. It becomes possible to further improve the visibility of the stereoscopic image.
[0044]
<Shift process 2>
Next, a second example of the shift process executed in the stereo mode will be described with reference to FIG.
[0045]
In this example, one of the left eye image side or the right eye image is stopped, and only the other is shifted to match the relative positional relationship of the left and right images with respect to the left eye and the right eye, respectively. In this case, the shift amount S is set to ½ of the image width W of SPM. Then, for example, only the left eye image is shifted with respect to the input image signal of the SPM. As shown in FIG. 8, the left eye display image IL is shifted rightward by W / 2 pixels, and the right eye image is displayed. For IR, the shift amount S is set to zero and the original image signal is held as it is.
[0046]
As a result, the left end of the IL display image frame displayed by the LCD display device 115a becomes a blank area of W / 2 pixels, and the SPM LR image moves to the right of the original display position by W / 2 pixels. It will be. At this time, the display position of the L image (PL) is set to the display position of the SPM R image (PR) in the normal display (monocular mode) which is a non-stereo display. Therefore, on the image screen, the L image (PL) of IL and the R image (PR) of IR overlap, and the two images can be merged.
[0047]
(Image display operation 2)
Next, the image display operation by the FMD will be described by exemplifying a case where the shift process is performed by the interface box 20.
[0048]
<Monocular mode>
When the monocular mode is selected with the stereo / monocular selector switch of the interface box 20, it is exactly the same as the image display operation 1 described above.
[0049]
<Stereo mode>
When the stereo mode is selected by the stereo / monocular switch of the interface box 20, the user sets the shift amount S by operating the shift amount variable setting switch by taking the image size into consideration. In this case, the user does not directly set the shift amount S, but the user inputs and sets only the value of the image width W by the shift amount variable setting switch, and the shift amount S is automatically set in the interface box 20. A mechanism of determining / 4 may be used. Then, the two types of image signals shifted respectively to the left and right by the shift amount S are sent to the FMD in parallel or in a time division manner, and are respectively displayed as a left eye image and a right eye image.
[0050]
In the shift process in the interface box 20, it is possible to use the process of FIG. 8 in which one of the left eye image side and the right eye image is stopped and only the other is shifted.
[0051]
(Automatic switching of operation mode)
Next, the operation in the case of automatically switching between the stereo mode and the monocular mode will be described with reference to the flowchart of FIG.
[0052]
This is a control applied when the FMD is realized as a playback device having the function of the block diagram of FIG. 1 alone, and is not a mode switching by a stereo / monocular switch, and an image to be displayed is a stereo pair. Whether it is an image or not is detected, thereby switching between the stereo mode and the monocular mode. In this case, the detection of whether or not the display target image is a stereo pair image uses a method in which information indicating “stereo pair image” is recorded in advance in the header area of the image file and recognized. can do.
[0053]
First, the system controller 111 reads an image file to be displayed from the memory card 117 and analyzes the header area (steps S101 and S102). Then, it is determined whether or not the image is a stereo pair image depending on whether or not information indicating that the image is a “stereo pair image” is included in the header area (step S103). When it is detected that the image is a stereo pair image, that is, an SPM, the system controller 111 sets the operation mode to the stereo mode, and causes the stereo pair image shift processing unit 201 to automatically execute the shift process (step S104). Then, the image signal after the shift processing is displayed by the LCD display system 115 (step S105). On the other hand, in the case of an image other than a stereo pair image, the system controller 111 shifts by the stereo pair image shift processing unit 201 so as not to cause a problem such as misalignment of a display image due to execution of unnecessary shift processing. Execution of the process is prohibited, and display is performed by the LCD display system 115 without performing the shift process (step S105).
[0054]
As a result, even when both SPM / monocular images are mixed, it is possible to perform appropriate processing according to the type of input display target image, and unnecessary shift to the monocular image. It is possible to prevent in advance problems such as deterioration in display image quality due to erroneous processing.
[0055]
As described above, in the present embodiment, a shift processing function is provided in the FMD main body or an interface box that guides an input image signal from the outside in the FMD main body, and the left eye is applied to the input image signal. By adopting a configuration in which different image shift processes are applied to the image and the right-eye image, it is possible to perform high-quality observation of a stereoscopic image with high presence using SPM.
[0056]
In the above embodiment, W / 4 (or W / 2) is used as the basic value of the shift amount S. However, the shift amount S is slightly smaller than the basic value in consideration of the gap between the LR images in the SPM. Alternatively, it may be set larger, or conversely, it may be made slightly smaller in consideration of the realistic correction. In other words, the shift process for the input image signal is intended to increase the degree of fusion of the L image and the R image, and to minimize the possibility of easily fusing images that were previously impossible or extremely difficult. Therefore, if the setting is made so that the L image and the R image are positioned within the range where the fusion can be performed on the virtual screen, the minimum necessary basic effect can be obtained. In other words, the higher-order purpose is to easily observe a high-quality stereoscopic image with a high sense of presence. Therefore, in order to obtain the optimum arrangement for that purpose, the shift amount S is set to the above basic example value. Therefore, it is a matter of course that the present invention is included in the present invention as one desirable modified embodiment.
[0057]
It is also possible to use a left-right reversed SPM in which the L image is arranged on the right side and the R image is arranged on the left side. However, in this case, the left eye image is left-shifted and the right eye image is right-shifted with respect to the input image signal.
[0058]
Further, an SPM in which an L image and an R image are arranged above and below can be used. The state of the shift process in this case is shown in FIG. That is, the left eye display image IL is shifted downward by H / 4 pixels, and the right eye display image IR is shifted upward by H / 4 pixels. Of course, only one of the display images may be shifted upward or downward by H / 2 pixels.
[0059]
Further, the aspect ratio of the SPM is arbitrary, and various non-aspect image signals can be handled.
[0060]
Instead of shifting the entire input image signal, only the SPM image area may be cut out from the input image signal, and the display position of the image area may be shifted.
[0061]
In the above embodiment, the SPM is exemplified as a still image. However, the present invention is not limited to this, and the present invention can be applied to a moving image such as MPEG. In the case of the moving image SPM, it is added that it is extremely effective from the viewpoint that it is impossible to print the moving image as it is, and therefore it is impossible to use a conventional print viewer.
[0062]
【The invention's effect】
As described above, according to the present invention, it is possible to easily observe a stereoscopic image using a stereo pair image, and it is possible to realize high-quality observation with a high sense of reality. Further, even in a situation where a stereo pair image and a normal non-stereo image (monocular or monoscopic image) are mixed, it can be used without problems.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an image display apparatus according to an embodiment of the present invention.
FIG. 2 is a view showing a structure of a stereo pair image SPM used in the image display apparatus of the embodiment.
FIG. 3 is a diagram showing a configuration of a display unit of an FMD used in the embodiment.
FIG. 4 is a view showing a relationship between an FMD and an interface box used in the embodiment.
FIG. 5 is a view showing a first example of shift processing executed in the embodiment;
FIG. 6 is a view showing a display example of a virtual display screen in the non-stereo mode of the embodiment.
FIG. 7 is a view showing a display example of a virtual display screen in the stereo mode of the embodiment.
FIG. 8 is a view showing a second example of the shift processing executed in the embodiment.
FIG. 9 is a flowchart for explaining an operation mode automatic switching operation according to the embodiment;
FIG. 10 is a view showing a third example of the shift processing executed in the embodiment.
[Explanation of symbols]
111 ... System controller
112 ... Operation switch system
112a ... Stereo / monocular switch
117 ... Memory card
115 ... LCD display system
115a: LCD display device (DL) for left eye image display
115b ... LCD display device (DR) for right eye image display
201: Stereo pair image shift processing unit

Claims (6)

Display means including a display unit for left eye display and a display unit for right eye display ;
Input means for inputting an input image signal to be displayed and reproduced to be displayed on each of the display unit for left eye display and the display unit for right eye display ;
A stereo pair image signal, which is an image signal of a stereo pair image in which the left eye viewpoint image and the right eye viewpoint image are spatially juxtaposed to form one image, is input to the display / reproduction target by the input means. When input as a signal, a stereo pair image signal that is an input image signal to be displayed and reproduced for the display unit for left eye display and a stereo pair that is an input image signal to be displayed and reproduced for the display unit for right eye display An image signal shift means for performing an image shift process for performing different shift processes on the image signal, and sending two types of stereo pair image signals after the image shift process to the display means ;
A shift amount variable setting switch for manually setting the image shift amount in the image signal shift means;
The image signal shift means is configured to set the relative position of the left-eye viewpoint corresponding image to the display image frame of the display unit for left-eye display and the right-eye display based on the image shift amount set by the shift amount variable setting switch. An image display device , wherein the image shift processing is performed so that the relative position of the right-eye viewpoint corresponding image with respect to the display image frame of the display unit for display is aligned . A non-volatile memory for storing a setting of the image shift amount by the shift amount variable setting switch, wherein the image signal shift means is configured to set the image based on the setting of the image shift amount stored in the non-volatile memory. 2. The image display device according to claim 1, wherein a shift process is performed. Stereo pair image detection means for detecting whether the image signal input by the input means is the stereo pair image signal;
If the image signal is subjected to detection result indicating the the stereo pair image signal, as before Symbol image signal shift means for performing the image shift processing based on the setting of the image shift amount by the shift amount variable setting switch the image display apparatus according to claim 1 or 2, wherein it is configured to. Stereo image detection means for detecting whether or not the image signal input by the input means is the stereo pair image signal;
If the image signal is subjected to detection result that not the stereo pair image signal, according to claim 1, wherein the image signal shift unit by execution of the image shift processing is configured to be inhibited or 2. The image display device according to 2 . The input means includes file reading means for reading an image file in which an image signal is recorded,
The stereo image detecting means detects whether the image signal input by the input means is the stereo pair image signal based on header information of the image file read by the file reading means. The image display device according to claim 3 or 4 . Display means including a display unit for left eye display and a display unit for right eye display ;
Input means for inputting an input image signal to be displayed and reproduced to be displayed on each of the display unit for left eye display and the display unit for right eye display;
A stereo pair image signal, which is an image signal of a stereo pair image in which the left eye viewpoint image and the right eye viewpoint image are spatially juxtaposed to form one image, is input to the display / reproduction target by the input means. When input as a signal, a stereo pair image signal that is an input image signal to be displayed and reproduced for the display unit for left eye display and a stereo pair that is an input image signal to be displayed and reproduced for the display unit for right eye display An image signal shift means for performing an image shift process for performing different shift processes on the image signal, and sending two types of stereo pair image signals after the image shift process to the display means;
A shift amount variable setting switch for manually setting the image shift amount in the image signal shift means;
The image signal shift means includes
Based on the image width of the stereo pair image, the relative position of the left-eye viewpoint corresponding image with respect to the display image frame of the display unit for the left eye display and the right eye with respect to the display image frame of the display unit for the right eye display The image shift processing is executed so that the relative positions of the viewpoint-corresponding images are aligned, and the image shift processing is further performed based on the stored image shift amount setting by the shift amount variable setting switch. An image display device that is executed.

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