JP2011082649A - Image generation device, image generation method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a sense of incongruity felt by a viewer when three-dimensionally viewing a right eye image and a left eye image. <P>SOLUTION: An image generation device for generating right eye images to be viewed by a viewer's right eye and left eye images to be viewed by a viewer's left eye includes an image generation unit in which a deviation amount being a difference between positions of correspondence points of a corresponding object in the right and left directions on a display screen is made different between a center area and a peripheral area in the right and left directions on the display screen to generate a right eye image and a left eye image. The image generation unit generates the right eye image and the left eye image where deviation amounts of the correspondence points on the display screen in the peripheral area of the display screen are smaller than that of the center area. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image generation device, an image generation method, and a program.

  As a technique for visually recognizing a stereoscopic (3D) image with the naked eye without using special glasses, a technique using a parallax barrier or a lenticular lens in front of the display surface is known. For example, a technique is known in which an image for the right eye and an image for the left eye displayed on the display surface are directed toward the right eye and the left eye by a parallax barrier or a lenticular lens, respectively (see, for example, Patent Document 1). ).

JP-A-7-287195

  The ease of parallax fusion for the viewer may differ greatly between the region in front of the viewer on the display surface and the surrounding region. In the surrounding area, it is difficult to recognize as a three-dimensional image, and if there is a large parallax there, the viewer may feel strongly uncomfortable.

  In order to solve the above problems, in one aspect of the present invention, a right-eye image that should be visually recognized by the viewer's right eye and a left-eye image that should be visually recognized by the viewer's left eye are generated. An image generating apparatus, wherein a right eye image is obtained by changing a shift amount, which is a difference in a horizontal position on a display screen of corresponding points of a corresponding object, in a central area and a peripheral area in the horizontal direction of the display screen. And an image generation unit that generates an image for the left eye.

  The image generation unit may generate a right-eye image and a left-eye image in which the shift amount of the corresponding point on the display screen is smaller than the central region in the peripheral region of the display screen.

  The image generation unit shifts the center area of the two-dimensional image to the left and right by the first shift amount, and shifts the peripheral area of the two-dimensional image to the left and right by the second shift amount smaller than the first shift amount. An image for the left eye may be generated.

  A screen size acquisition unit that acquires information indicating the size of the display screen that displays the right-eye image and the left-eye image is further provided, and the image generation unit is configured such that the information acquired by the screen size acquisition unit is smaller than a predetermined size. The right eye image and the left eye image having the same amount of deviation between the central area and the peripheral area of the display screen are generated, and the information acquired by the screen size acquisition unit is larger than a predetermined size. In the case of showing, a right-eye image and a left-eye image that are smaller in the peripheral area of the display screen than the central area may be generated.

  It further includes a screen size acquisition unit that acquires information indicating the size of the display screen that displays the image for the right eye and the image for the left eye, and the image generation unit has a larger size indicated by the information acquired by the screen size acquisition unit. When it is larger, a right-eye image and a left-eye image that are smaller in the peripheral area of the display screen than the central area may be generated.

  You may further provide the display part which displays the image for right eyes and the image for left eyes which the image generation part produced | generated.

  You may further provide the image guidance part provided in the viewer side of the display part, and guides the image for right eyes and the image for left eyes in a different direction.

  The above summary of the invention does not enumerate all necessary features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

It is a figure which shows the structural example of the display apparatus 10 which concerns on one Embodiment. FIG. 6 is a diagram for explaining an operation example of an image processing unit 120. It is a figure explaining the image guide part. 6 is a diagram for explaining an operation example of an image generation unit 110. FIG. 6 is a diagram illustrating an example of processing performed by a deviation amount determination unit 160. FIG. FIG. 10 is a flowchart illustrating an operation example of the display device 10. It is a figure explaining the range of deviation | shift amount. It is a figure explaining the other example of the lower limit which defines the range of deviation | shift amount. It is a figure which shows an example of the deviation | shift amount with respect to the viewer who is viewing the display surface in the diagonal direction. It is a figure which shows the example of a process with respect to the image edge part of the image for left eyes, and the image for right eyes. It is a figure which shows the other example of a process with respect to an image edge part. It is a figure which shows the further another process example with respect to an image edge part. It is a figure which shows the further another process example with respect to an image edge part. It is a figure which shows the further another process example with respect to an image edge part. It is a figure which shows an example of the hardware constitutions of the computer 800 which concerns on other embodiment.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a diagram illustrating a configuration example of a display device 10 according to an embodiment. The display device 10 presents a stereoscopic image to the viewer. Specifically, the display device 10 generates a right-eye image that should be viewed with the viewer's right eye and a left-eye image that should be viewed with the viewer's left eye, and generates the generated right The stereoscopic image is presented to the viewer by presenting the eye image and the left eye image to the viewer's right eye and the viewer's left eye, respectively.

  Here, the display device 10 may be a display device such as a digital photo frame, a television receiver, and a monitor for a personal computer. The display device 10 may be a display device of an imaging device such as a digital still camera or a digital video camera, or may be a display device of a mobile device such as a mobile phone.

  The display device 10 includes an image acquisition unit 100, an image generation unit 110, an image processing unit 120, a display unit 140, an image guide unit 150, a shift amount determination unit 160, a screen size acquisition unit 170, a control unit 180, and a viewer. A specifying unit 190 is provided. Note that, among the components included in the display device 10, functional blocks excluding the image guide unit 150 can function as an image generation device that generates a right-eye image and a left-eye image. For example, a functional block including an image acquisition unit 100, an image generation unit 110, an image processing unit 120, a display unit 140, a deviation amount determination unit 160, a screen size acquisition unit 170, a control unit 180, and a viewer identification unit 190. It can function as an image generation device.

  The image acquisition unit 100 acquires an input image that is a source of a display image to be displayed on the display unit 140. For example, the image acquisition unit 100 may acquire one or more images stored in the storage medium from the storage medium as an input image. The image acquisition unit 100 may acquire an image supplied from the outside through an external interface as an input image. The image acquired by the image acquisition unit 100 as an input image may be a still image or a moving image in which still images are continuous. The image acquisition unit 100 acquires a plurality of input images and supplies them to the image generation unit 110.

  As an input image, one two-dimensional image that is an image from one viewpoint can be exemplified. For example, the input image may be a single two-dimensional image obtained by imaging from a single viewpoint with a so-called two-dimensional camera. In addition, the input image may be two two-dimensional images that are images from two viewpoints corresponding to the right eye and the left eye, respectively. For example, the input image may be two two-dimensional images obtained by imaging from two viewpoints with a so-called compound eye camera.

  The image generation unit 110 uses the input image acquired from the image acquisition unit 100 to generate a right eye image and a left eye image included in the display image to be displayed on the display unit 140. Specifically, the image generation unit 110 varies the shift amount, which is the difference in the horizontal position on the display screen of the corresponding points of the corresponding object, between the central area and the peripheral area in the horizontal direction of the display screen. A right-eye image and a left-eye image are generated. Here, the horizontal direction is a direction along the right and left eyes of the viewer. As will be described later, the image generation unit 110 generates a right-eye image and a left-eye image by varying the amount of deviation between the central region and the peripheral region, so that a three-dimensional image can be obtained without causing a great sense of discomfort to the viewer. A display image capable of recognizing a typical image can be provided. The image generation unit 110 supplies the generated right eye image and left eye image to the image processing unit 120.

  The image processing unit 120 performs predetermined image processing on the right-eye image and the left-eye image generated by the image generation unit 110 to generate a display image, and supplies the display image to the display unit 140. For example, the image processing unit 120 may perform blurring processing on at least one of the right eye image and the left eye image. For example, the image processing unit 120 may perform blurring processing on at least one of the right-eye image and the left-eye image by averaging a plurality of pixel values for each partial region of the image.

  Rather than presenting a clear image for the right eye and a left eye to the viewer, the viewer may be able to recognize a three-dimensional image with a small burden when the blurring process is performed. is there. Specifically, the spatial information given to the viewer by the display image, which is a pseudo stereoscopic image displayed on the two-dimensional display surface, is completely the same as the spatial information given by the object in the actual three-dimensional space. The viewer may feel some contradiction in the visual information obtained from the display image.

  The viewer's brain tries to recognize one stereoscopic image by fusing the right-eye image and the left-eye image, but contradicts that both the right-eye image and the left-eye image are clear. May stand out and be unable to fuse properly. In addition, in order to fuse the displayed images properly, a great burden is placed on the viewer's brain, and the viewer may get tired.

  Compared to the case where both the right-eye image and the left-eye image are clear, the image processing unit 120 can reduce inconsistency by blurring at least one of the left-eye image and the right-eye image. Even if the image is blurred, the viewer's brain can conveniently recognize the blurred image with the other image, so the display image can be recognized as a three-dimensional image relatively easily. it can. In addition, since the viewer's brain can conveniently recognize a blurred image as a clear image, the image quality of the image recognized by the viewer is not substantially deteriorated.

  By the blurring process by the image processing unit 120, the viewer can recognize the display image as a clear stereoscopic image with a small burden. For this reason, the viewer can continue to appreciate the stereoscopic image provided by the display device 10 for a relatively long time.

  Note that the image processing unit 120 calculates the sharpness of at least one of the input image, the right-eye image, and the left-eye image, and the right eye is provided on the condition that the sharpness is larger than a predetermined value. Blur processing may be performed on at least one of the image for use and the image for the left eye. For example, the image processing unit 120 may determine the definition based on a spatial frequency component included in at least one of the right-eye image and the left-eye image. For example, when the input image has a higher spatial frequency component in a spatial frequency region higher than a predetermined spatial frequency, the image processing unit 120 may determine a sharpness with a larger value.

  In addition, the image processing unit 120 divides each of the right-eye image and the left-eye image into a plurality of stripe images having a predetermined width in a predetermined direction. Then, the image processing unit 120 generates a display image in which the stripe image of the right eye image and the stripe image of the left eye image are alternately arranged in a predetermined image arrangement direction.

  The display image generated by the image processing unit 120 is supplied to the display unit 140. The display unit 140 displays the image for the right eye that should be viewed with the right eye of the viewer and the image for the left eye that should be viewed with the left eye of the viewer, generated by the image generation unit 110. Specifically, the display unit 140 displays a display image in which a stripe image of the right eye image and a stripe image of the left eye image are alternately arranged. As described below, each stripe image (R) from the image for the right eye displayed on the display unit 140 is directed to the right eye of the viewer by the image guide unit 150 and displayed on the display unit 140. Each stripe image (L) from the image for the left eye is directed to the left eye of the viewer by the image guide unit 150.

  The image guide unit 150 may be a so-called parallax barrier in which transmission parts and light shielding parts are alternately arranged. For example, the image guide unit 150 includes alternately transmissive portions and light shielding portions. The transmission part and the light shielding part are alternately arranged in the barrier arrangement direction orthogonal to the extending direction, and the stripe images corresponding to the right eye image and the left eye image displayed by the display unit 140 are emitted in different directions for viewing. Present to the right and left eyes of the viewer. With such a configuration, a stereoscopic image can be presented to a naked eye viewer.

  As described above, when there is a difference in the position of the corresponding point of the corresponding object on the display screen of the display unit 140 between the right-eye image and the left-eye image included in the display image, the viewing is performed. The person can recognize the display image three-dimensionally. For example, if the corresponding points of the corresponding objects in the right eye image and the left eye image are shifted by an amount close to the distance between the pupils of the viewer, the eyes of the viewer's left eye and right eye are substantially It becomes a parallel state. This makes it possible for the viewer to recognize an image as if looking at infinity.

  In this specification, the difference in the position on the display screen of corresponding points of corresponding objects in the right-eye image and the left-eye image is referred to as a deviation amount. As will be described below, the display device 10 can present a display image in which the viewer does not feel more uncomfortable by adjusting the shift amount for each display region. Specifically, the image generation unit 110 generates a right-eye image and a left-eye image in which the shift amount of the corresponding point on the display screen is smaller than the central region in the peripheral region of the display screen. When the viewer is viewing from the front of the central area of the display unit 140, even if an object in the peripheral area is visible with both eyes of the viewer, the amount of shift in the peripheral area is relatively small. Therefore, the viewer does not feel the positional deviation of the objects in the peripheral area. Thereby, the uncomfortable feeling felt by the viewer in the peripheral area can be reduced. On the other hand, since the shift amount is relatively large in the central area of the display surface of the display unit 140, the viewer can recognize an image with a three-dimensional effect.

  Here, when the input image is a two-dimensional image, the image generation unit 110 views the display image recognized as a three-dimensional image by relatively shifting the input image left and right by a given amount of deviation. Can be presented to the viewer. In this case, the image generation unit 110 shifts the center area of the two-dimensional image left and right by the first shift amount, and shifts the peripheral area of the two-dimensional image left and right by the second shift amount smaller than the first shift amount. A right-eye image and a left-eye image are generated.

  When the input image is a two-dimensional image from two viewpoints, such as when the image is captured by a compound eye camera, and already includes a deviation amount, the image generation unit 110 displays the two-dimensional image from the right viewpoint. Then, the right-eye image and the left-eye image are generated by shifting the two-dimensional image from the left viewpoint as follows. That is, the image generation unit 110 has a left-right shift amount between the two-dimensional image from the right viewpoint and the two-dimensional image from the left viewpoint as the first shift amount in the central area and the first shift amount in the peripheral area. By shifting the two-dimensional image from the right viewpoint and the two-dimensional image from the left viewpoint to the left and right for each region so that the second shift amount is smaller than the amount, the right eye image and the left eye image are Generate.

  The shift amount for each display area is determined by the shift amount determination unit 160, for example. Specifically, when the shift amount determination unit 160 determines whether or not to change the shift amount for each display region, and determines that the shift amount is different for each display region, the shift amount for each display region is determined. The amount may be determined. For example, the shift amount determination unit 160 may determine whether or not to change the shift amount for each display area based on the size of the display screen of the display unit 140. Further, the shift amount determination unit 160 may determine the shift amount for each display area based on the size of the display screen of the display unit 140.

  Specifically, the screen size acquisition unit 170 acquires information indicating the size of the display screen that displays the right-eye image and the left-eye image. More specifically, the screen size acquisition unit 170 acquires information indicating the size of the display screen of the display unit 140. Here, the information indicating the size of the display screen can use the horizontal size of the display screen of the display unit 140 as an index. The size of the display screen may be the size of the display area where the display unit 140 actually displays the display image. For example, when a display image is displayed in an area smaller than the maximum display area that can be displayed by the display unit 140, the size of the display screen is a display image that is actually smaller than the maximum display area. It can be regarded as meaning the size of the area.

  When the information acquired by the screen size acquisition unit 170 indicates a size smaller than a predetermined size, the shift amount determination unit 160 determines the same shift amount between the central area and the peripheral area of the display screen. Then, when the information acquired by the screen size acquisition unit 170 indicates a size smaller than the predetermined size, the image generation unit 110 and the right eye image and the left eye that have the same amount of deviation between the central region and the peripheral region of the display screen Images. On the other hand, when the information acquired by the screen size acquisition unit 170 indicates a size greater than or equal to a predetermined size, the shift amount determination unit 160 determines a shift amount smaller than the central region in the peripheral area of the display screen. Then, when the information acquired by the screen size acquisition unit 170 indicates a size equal to or larger than a predetermined size, the image generation unit 110 has a right eye image and a left eye image that are smaller in the peripheral area of the display screen than the central area. And generate As described above, when the size indicated by the information acquired by the screen size acquisition unit 170 is larger, the image generation unit 110 causes the right eye image and the left eye to be smaller in the peripheral area of the display screen than in the central area. Images can be generated.

  When the display screen of the display unit 140 is smaller than a predetermined size, the viewer can easily perform parallax fusion between the right-eye image and the left-eye image in the entire area of the display screen. It can be recognized as an image. When the display screen is smaller than a predetermined size, for example, the display device 10 provides a display image with the same amount of displacement over the entire region, so that the viewer can enjoy a stereoscopic image over the entire image. On the other hand, when the display screen of the display unit 140 is equal to or larger than the predetermined size, it becomes difficult for the viewer to perform the parallax fusion between the right-eye image and the left-eye image in the peripheral area of the display screen, and the amount of deviation is large. I feel more uncomfortable. However, when the display screen is larger than the predetermined size, the shift amount in the peripheral area is made smaller than that in the central area by the control of the image generation unit 110, and thus the viewer is prevented from feeling a sense of discomfort strongly in the peripheral area. Can do. On the other hand, since the display device 10 presents a display image with a relatively large shift amount in the central region, the viewer can enjoy a stereoscopic image.

  Even if the input image is a captured image, the shift amount determination unit 160 determines the shift amount regardless of the actual distance to a plurality of subjects captured in each area of the input image. It's okay. For example, even if the subject imaged in the peripheral area is actually located farther than the subject imaged in the central area, the deviation amount determination unit 160 has a larger magnitude than the deviation amount in the central area. The amount of deviation may be determined in the peripheral area.

  In the above description, the process of relatively changing the amount of deviation in the display area has been described. Here, the magnitude of the shift amount can be determined by the positional relationship between the display surface of the display unit 140 and the viewer. For example, the viewer specifying unit 190 specifies the orientation of the viewer's face with respect to the display surface of the display unit 140 as the positional relationship between the display surface of the display unit 140 and the viewer. Further, the viewer specifying unit 190 determines the distance from the viewer's eyes to the display surface of the display unit 140 and the orientation of the viewer's eyes as the positional relationship between the display surface of the display unit 140 and the viewer. May be specified. Then, the shift amount determination unit 160 may determine the shift amount based on the positional relationship between the display surface of the display unit 140 and the viewer.

  For example, the shift amount determination unit 160 may determine the shift amount based on the direction specified by the viewer specifying unit 190. Specifically, the deviation amount determination unit 160 may identify the display area that the viewer is viewing based on the orientation identified by the viewer identification unit 190 and may determine the deviation amount in the display area. . At this time, the shift amount determination unit 160 increases the shift of the display area that the viewer is watching as the angle between the orientation specified by the viewer specifying unit 190 and the normal direction of the display surface of the display unit 140 increases. A larger amount of displacement may be determined as the amount. Then, the shift amount determination unit 160 determines a shift amount smaller than the shift amount of the display region viewed by the viewer as the shift amount of the peripheral region of the display region viewed by the viewer. Good.

  Further, the control unit 180 may determine at least one of the position and the pitch of the light shielding unit included in the image guide unit 150 based on the orientation specified by the viewer specifying unit 190 or the distance from both eyes to the display surface. Good. The position of the light shielding part may be at least one of the position of the light shielding part in the left-right direction and the position of the light shielding part in the normal direction of the display surface of the display unit 140. In addition, the control unit 180 may determine the width or arrangement pitch of each stripe image corresponding to the determined position or pitch of the light shielding unit, and cause the image processing unit 120 to generate a stripe image having the determined width. Further, the control unit 180 may cause the image processing unit 120 to generate a display image in which stripe images are arranged at the determined pitch.

  FIG. 2 is a diagram for explaining an operation example of the image processing unit 120. As described above, the image processing unit 120 divides the left-eye image and the right-eye image into a plurality of stripe images (L1, L2, L3,..., R1, R2, R3,...). To do. The image processing unit 120 of this example divides the left-eye image and the right-eye image at predetermined intervals along the horizontal arrangement direction.

  The image processing unit 120 generates the display image by arranging the generated stripe images alternately in the arrangement direction of the right-eye image and the left-eye image. Since the display unit 140 simultaneously displays the right eye image and the left eye image included in the display image, the image processing unit 120 arranges the stripe image arrangement for each of the left eye image and the right eye image. The number of display pixels in the direction is approximately halved. More specifically, the image processing unit 120 uses every other stripe image of the left eye image and the right eye image in the arrangement direction.

  FIG. 3 is a diagram illustrating the image guide unit 150. The image guide unit 150 includes a barrier unit 310 and a barrier control unit 320 provided on the viewer side of the display unit 140. The barrier unit 310 guides the right-eye image and the left-eye image in different directions.

  Specifically, the barrier unit 310 includes a transmission unit 312 and a light shielding unit 314 provided alternately along a predetermined arrangement direction on the viewer side of the display unit 140. One transmissive portion 312 is formed for each combination of one stripe image of the left eye image and one stripe image of the right eye image. Each transmission unit 312 emits a corresponding stripe image of the left-eye image in the direction of the left eye of the viewer, and outputs a corresponding stripe image of the right-eye image in the direction of the right eye of the viewer. Eject. When the image guide unit 150 presents an image for a plurality of viewpoints to a naked eye viewer, a striped image captured by the viewer's right eye at a certain viewing position is viewed at another viewing position. May be caught by the left eye of a person. In the present embodiment, the image for the right eye is an image captured with the right eye of the viewer, and the image for the left eye can be regarded as an image captured with the left eye of the viewer. Specifically, when a stripe image emitted from a specific transmission unit 312 is substantially captured by the right eye of the viewer, the stripe image is regarded as a stripe image that forms an image for the right eye. Can do. Conversely, when a stripe image emitted from the same specific transmission part 312 is substantially captured by the left eye of the viewer, the stripe image can be regarded as a stripe image that forms an image for the left eye. it can. That is, it can be said that the image guide unit 150 guides images for a plurality of viewpoints in different directions.

  The barrier unit 310 may be formed by arranging a plurality of shutter elements. Specifically, the barrier unit 310 may include a plurality of shutter elements arranged in a matrix along the horizontal direction and the vertical direction. The barrier control unit 320 controls the extending direction and the arrangement direction of the transmission unit and the light shielding unit by individually setting on / off of these shutter elements based on the control of the control unit 180. That is, the barrier control unit 320 turns on the shutter element in the region where the transmission part is to be formed and turns off the shutter element in the region where the light shielding part is to be formed. Form. As described above, the barrier control unit 320 controls whether or not light is transmitted through the plurality of shutter elements, whereby the light shielding unit 314 that shields light and the transmission unit 312 that transmits light are alternately arranged in stripes. Let it form.

  Here, when a so-called two-dimensional image is presented to the viewer instead of a stereoscopic image, the barrier control unit 320 substantially sets all shutter elements corresponding to the display area of the two-dimensional image on the display unit 140. Turn on. Thereby, the two-dimensional image displayed on the display unit 140 is transmitted by the transmission unit and visually recognized by the right and left eyes of the viewer. Even in the state where the light shielding units 314 and the transmission units 312 are alternately arranged, a two-dimensional image can be viewed by generating a display image from the same right-eye image and left-eye image with no deviation. Can be presented to the person.

  In addition to the parallax barrier type image guide unit 150 illustrated in the drawing, a lenticular lens type image guide unit 150 may be illustrated. For example, instead of controlling the guide direction of the image by the barrier unit 310, the guide direction of the image can be changed by a lenticular lens. Specifically, a lens array that guides a plurality of right-eye stripe images and a plurality of left-eye stripe images in different directions causes the corresponding left-eye stripe images to be directed toward the viewer's left eye. The corresponding stripe image of the right-eye image can be directed toward the viewer's right eye. Thereby, the image guide unit 150 can guide the plurality of right-eye stripe images and the plurality of left-eye stripe images in different directions.

  FIG. 4 is a diagram for explaining an operation example of the image generation unit 110. FIG. 4 shows image data whose coordinates are defined with respect to the horizontal direction x and the vertical direction y of the pixel array of the display unit 140. Here, for the sake of simplicity, a process for generating a left-eye image and a right-eye image having a shift amount L, which is a distance equal to or smaller than the interpupillary distance of the viewer, by shifting the entire input image that is a two-dimensional image. explain. Specifically, the image generation unit 110 generates an image obtained by shifting a given two-dimensional image to the left on a predetermined axis by L / 2 as an image for the left eye, and an image obtained by shifting L / 2 to the right on the axis. Is generated as a right-eye image. As described above, the image generation unit 110 generates a right-eye image and a left-eye image in which a two-dimensional image is shifted left and right on the display screen.

  Here, processing when the amount of deviation is different between the central region and the peripheral region will be described. When the shift amount in the central region is the first shift amount L1 and the shift amount in the peripheral region is the second shift amount L2 (<L1), the image generation unit 110 shifts the two-dimensional image to the left by L1 / 2. The first left-eye image and the second left-eye image obtained by shifting the two-dimensional image to the left by L2 / 2 are generated. Then, the image generation unit 110 combines the partial area in the first left-eye image corresponding to the central area of the display screen and the partial area in the second left-eye image corresponding to the peripheral area of the display screen. The left eye image is generated.

  Further, the image generation unit 110 generates a first right eye image obtained by shifting the two-dimensional image to the right by L1 / 2 and a second right eye image obtained by shifting the two-dimensional image to the right by L2 / 2. Then, the image generation unit 110 combines the partial area in the first right eye image corresponding to the central area of the display screen and the partial area in the second right eye image corresponding to the peripheral area of the display screen. The right eye image is generated. Thereby, the image generation unit 110 can generate a right-eye image and a left-eye image in which the amount of deviation is different between the central region and the peripheral region. Note that the image generation unit 110 can also generate an image for the left eye and an image for the right eye having three or more different shift amounts for each display region by a similar method.

  FIG. 5 shows a processing example by the deviation amount determination unit 160. In the example of this figure, the shift amount when the size of the display screen of the display unit 140 is larger than a predetermined size is shown for each display area on the display screen. Here, the shift amount determination unit 160 determines the first shift amount L1 as the shift amount in the first display region 500 which is the central display region, and the second display region located on the left and right of the first display region 500. It is assumed that the second shift amount L2 (<L1) is determined as the shift amount in 510a and the second display area 510b. Further, the displacement amount determination unit 160 uses the third displacement amount L3 as the displacement amount between the third display region 520a located to the left of the second display region 510a and the third display region 520b located to the right of the second display region 510b. Assume that (<L2) is determined. In each of the first display area 500, the second display area 510, and the third display area 520, the image generation unit 110 displays a right-eye image and a left-eye image having a shift amount of L1, L2, and L3, respectively. Generate.

  Note that the shift amount determination unit 160 may store a shift amount corresponding to the screen size in advance for each display area. For example, the shift amount determination unit 160 may store in advance shift amounts corresponding to one or more display areas in association with a plurality of pieces of range information each indicating a screen size range. Specifically, the shift amount determination unit 160 may store a shift amount in a larger number of display areas in association with range information indicating a larger screen size. When the shift amount determination unit 160 stores the shift amount in each of the plurality of display regions, the shift amount determination unit 160 may store a smaller shift amount in the peripheral display regions.

  Further, the shift amount determination unit 160 associates with the range information indicating the range of the larger screen size, and sets a shift amount smaller than the shift amount of the central area as the shift amount of the peripheral area farthest from the central area. May be memorized. For example, the shift amount determination unit 160 may store a shift amount of 0 in the most distant peripheral region in association with range information indicating a screen size range that exceeds a predetermined threshold.

  Then, the shift amount determination unit 160 specifies the screen size of the display unit 140 from the information acquired by the screen size acquisition unit 170 and stores it in advance in association with the range information including the specified screen size. The amount of deviation in the display area is read out. The shift amount determination unit 160 determines the read shift amount in the one or more display areas as the shift amount of the corresponding one or more display areas on the display screen of the display unit 140.

  Further, for the purpose of determining a shift amount suitable for each viewer, the image processing unit 120 generates and generates a plurality of display images having different shift amounts between display areas from the same input image. A plurality of display images may be sequentially presented from the display unit 140 to the viewer. Then, information specifying the display image that can be recognized most stereoscopically may be acquired from a viewer or the like, and the shift amount determination unit 160 may store the shift amount of each display region in the acquired display image. At this time, information for identifying a person as a viewer may be acquired, and the shift amount determination unit 160 may store the shift amount in each display area in association with the acquired information. Later, the shift amount determination unit 160 reads the shift amount in each display area stored in association with information for identifying the person who is viewing the display unit 140, and displays the read shift amount as the display unit 140. It can be determined as a shift amount of each display area corresponding to the display screen.

  FIG. 6 is a flowchart illustrating an operation example of the display device 10. In step S <b> 602, the shift amount determination unit 160 specifies the screen size based on the information acquired from the screen size acquisition unit 170. In S604, the shift amount determination unit 160 determines whether or not the screen size exceeds a predetermined size. When the screen size exceeds the predetermined size (YES), in S606, the shift amount determination unit 160 determines the shift amounts of the plurality of display areas according to the screen size. When the screen size does not exceed the predetermined size (NO), in S608, the shift amount determination unit 160 determines the same shift amount in all display areas of the display screen of the display unit 140.

  In step S <b> 610, the image acquisition unit 100 acquires an input image that is a source of a display image to be displayed on the display unit 140. In S612, the image generation unit 110 generates a right-eye image and a left-eye image by relatively shifting the input image according to the shift amount determined in S606 or S608. In step S <b> 614, the image processing unit 120 generates a display image from the right eye image and the left eye image and causes the display unit 140 to display the display image. In S616, it is determined whether or not to end the image display. For example, when images are presented for all predetermined input images (YES), it may be determined to end the image display. If there is something that is not presented (NO), the process proceeds to S610 to select the next input image.

  FIG. 7 is a diagram for explaining the range of the deviation amount. So far, the process in which the display device 10 presents an image to the two viewpoints of the viewer's right eye and left eye has been described. Not only when presenting a stereoscopic image to one viewer, but also when presenting a stereoscopic image or two-dimensional image to a plurality of viewers. Consider the case of presenting an image. When the image generation unit 110 generates an image for multi-viewpoints by shifting the input image, the deviation amount determination unit 160 is defined as described below according to the number of viewpoints to be presented and the pixel width of the display unit 140. Determine the amount of deviation within the range.

  First, regarding the upper limit value of the shift amount, the shift amount is preferably less than the interpupillary distance of the viewer. For example, the shift amount determination unit 160 sets the shift amount in the center area of the display screen to a value less than the interpupillary distance of the viewer. For example, the viewer specifying unit 190 specifies the interpupillary distance from the viewer image obtained by imaging the viewer, and supplies information indicating the specified interpupillary distance to the shift amount determining unit 160. Good. Then, the shift amount determination unit 160 determines a shift amount less than the inter-pupil distance indicated by the supplied information.

  As described above, by presenting the display image obtained by shifting the input image to the viewer, it is possible to present a state in which the viewer is looking physiologically far away. As a result, it is possible to present to the viewer an image having a three-dimensional effect and a sense of reality from a psychological action. In particular, by setting the amount of displacement closer to the interpupillary distance, it is possible to present a display image that makes the viewer's eyes look farther, and remarkably enhance the scale feeling of the screen. be able to. In particular, this effect becomes more prominent as the display unit 140 is a large display.

  On the other hand, in the display device 10 that displays stereoscopically by parallax fusion with the naked eye, there is a possibility that parallax fusion becomes difficult for many people as the amount of deviation increases. In addition, as described later, when the right-eye image and the left-eye image are generated by shifting the input image to the left and right, an area in which one of the left-eye image and the right-eye image does not exist at the left and right ends of the display area Appears. If the amount of deviation is constant, the ratio of the size of the area to the size of the display screen becomes higher as the display screen is smaller.

  When the amount of deviation is reduced, it appears to the viewer that the object plane exists at a position closer to the actual display surface of the display unit 140. In the case where the display unit 140 has a large display surface, if the amount of deviation is too small, it may become less visible in three dimensions. However, when the display screen of the display unit 140 is small, even if the amount of deviation is relatively small and the object surface is displayed slightly behind the display unit 140, the viewer can sufficiently feel the stereoscopic effect. Can be recognized. Therefore, especially when the display unit 140 is small, it is often preferable to reduce the amount of displacement in order to make stereoscopic viewing more effective for many people.

  Here, the lower limit value that determines the range of the deviation amount can be determined by the number of viewpoints and the pixel width of the display unit 140 as described below. As shown in the figure, the display unit 140 includes display elements having an RGB stripe arrangement, and is a display having a one-pixel width d. That is, one pixel of the display image is represented by R, G, and B display elements that are continuous in the horizontal direction (left and right direction). In this figure, the numerical values 1 to 6 given to the display elements are numerical values for identifying the viewpoint to which the light from the display element is directed, and these values are 6 in a vertical interleaved manner by the light shielding unit 314 or the lenticular lens described above. Assume that an image is presented toward the viewpoint.

  As shown in the figure, each viewpoint is presented with an image formed by pixels that are effectively arranged at intervals of 6d. In this case, it is preferable to set the deviation amount to a value larger than 6d. More generally, when the number of viewpoints is n, it is preferable that the amount of deviation is larger than n × d. By determining the shift amount in this way, the viewer can recognize a three-dimensional image that is not planar.

  FIG. 8 is a diagram illustrating another example of the lower limit value that defines the range of the deviation amount. Also in this figure, the numerical values 1 to 6 given to the display elements are numerical values for identifying the viewpoints to which the light from the display elements is directed. In the illustrated arrangement, the display pixels forming one pixel of the image for each viewpoint are arranged in an oblique direction, and the arrangement of the light shielding portion 314 and the lenticular lens is not in the vertical direction, but in an oblique direction corresponding to the arrangement direction of the display pixels. Suppose that it is a direction. In this arrangement example, by distributing display pixels for one pixel over three rows in the vertical direction, it is possible to effectively present images with pixel intervals for two columns at each viewpoint. Thereby, a lower limit can be made into a value smaller than nxd. Specifically, in the example of 6 viewpoints according to this arrangement example, it is preferable that the amount of deviation is larger than 2d. In the case of two viewpoints, it is preferable to set the deviation amount to a value larger than 2d / 3.

  FIG. 9 shows an example of the shift amount in a state where the viewer is viewing the display surface in an oblique direction. Here, it is assumed that the angle in the left-right direction of the viewer's face with respect to the normal direction of the display surface of the display unit 140 is α. When the right-eye image and the left-eye image with the deviation amount L in both eyes of the viewer are to be presented, the deviation amount determination unit 160 calculates L / L as the deviation amount in the right-eye image and the left-eye image. Determine cos (α). Thereby, the viewer can visually recognize the right-eye image and the left-eye image that are shifted by a desired shift amount L in the viewer's eyes.

  Note that the viewer specifying unit 190 acquires a viewer image obtained by imaging the viewer in a direction fixed with respect to the display surface of the display unit 140, and converts the acquired viewer image into the acquired viewer image. The orientation of the face relative to the image capturing direction of the viewer image may be specified from the image of the viewer's face included. The orientation of the face can be specified based on, for example, the relative positional relationship between the eyes, mouth, and nose in the face image of the viewer. The viewer specifying unit 190 may specify the angle α based on the imaging direction of the viewer image with respect to the display surface of the display unit 140 and the orientation of the face of the viewer with respect to the imaging direction of the viewer image. it can.

  Further, the shift amount determination unit 160 determines the above-mentioned L / cos (α) as the shift amount L1 of a part of the display area 900 in the direction of the face of the viewer, and the left and right surroundings of the display area 900 A value smaller than L1 may be determined as the shift amount in the display areas 910a and 910b. Since the amount of deviation can be made relatively small in the area around the area that the viewer is watching, the uncomfortable feeling felt by the viewer can be reduced.

  Note that the control unit 180 may control the arrangement of the barrier unit 310 according to the face orientation of the viewer. That is, the control unit 180 controls the position of the light shielding unit 314 so that the right eye image and the left eye image are directed to the right eye and the left eye of the viewer who is viewing the display unit 140 from an oblique direction, respectively. Good. Specifically, the barrier control unit 320 controls the position of the light shielding unit 314 by individually setting on / off of the shutter elements described above according to the control of the control unit 180. The barrier control unit 320 may control the pitch of the light shielding unit 314 so that the right eye image and the left eye image are directed to the right and left eyes of the viewer, respectively. In addition, when a plurality of the shutter elements are arranged in the normal direction of the front face of the display unit 140, the shutter elements in each column are individually turned on / off so that the shutter elements in the normal direction of the display face are set. The position of the light shielding part 314 can also be controlled. In this case, the barrier control unit 320 controls the position of the light shielding unit 314 in the normal direction of the display surface so that the right-eye image and the left-eye image are directed to the viewer's right eye and left eye, respectively. You can do it.

  FIG. 10 shows a processing example of the image edge portion in the left-eye image and the right-eye image. The processing example in this figure shows an example of a left-eye image to which a single-color right-end image is added and an example of a right-eye image to which a single-color left-end image is added. For example, the image processing unit 120 adds a single-color right-end image displayed within a predetermined range from the right end of the display area to the right side of the left-eye image. As an example, the image processing unit 120 adds the right end image of dark color such as black or light color such as white displayed within a predetermined range from the right end of the display area to the right side of the left eye image. As an example, the image processing unit 120 shifts the original two-dimensional image to the left, and the right end of a dark color such as black or a light color such as white is displayed on the right side of the left eye image in the display area. Add an image.

  Further, as an example, the image processing unit 120 adds a left end image of a dark color such as black or a light color such as white, which is displayed within a predetermined range from the left end of the display area, to the left side of the right eye image. As an example, the image processing unit 120 can be obtained by shifting the original two-dimensional image in the right direction, and the left end of a dark color such as black or a light color such as white in the left blank portion of the right-eye image in the display area. Add an image.

  The image processing unit 120 can display such that a frame is conscious at the right end and the left end in the display area by adding such a right end image and a left end image. Thereby, the image processing unit 120 can provide a viewer with a natural three-dimensional image that looks like the scenery outside from the window frame.

  Further, as an example, the image processing unit 120 has a dark frame image such as black or a light color frame such as white having a width equal to or greater than the distance between the pupils on the left side and the right side in the image for the left eye to which the right end image is added. Is further added. Similarly, the image processing unit 120, for example, in the right eye image to which the left end image is added, on each of the right side and the left side, a dark color frame such as black or a light color frame such as white having a width equal to or greater than the interpupillary distance. Add more images. Thereby, the image processing unit 120 can display a clear frame in the display screen.

  FIG. 11 shows another example of processing of the image edge, in which an example of a left-eye image to which a right-end image obtained by copying a part of the right-eye image is added, and a left-end image obtained by copying a part of the left-eye image are displayed. An example of the added image for the right eye is shown. As an example, the image processing unit 120 adds, as a right end image, a portion displayed within a predetermined range from the right end of the display area in the right eye image on the right side of the left eye image. As an example, the image processing unit 120 copies a portion displayed within a range from the right end of the display area in the right eye image to a position corresponding to the right end of the left eye image, and uses the left eye image as the right end image. Append to the right side of the image.

  For example, the image processing unit 120 adds, as a left end image, a portion displayed within a predetermined range from the left end of the display area in the left eye image on the left side of the right eye image. As an example, the image processing unit 120 copies a portion displayed within a range from the left end of the display region in the left eye image to a position corresponding to the left end of the right eye image, and uses the left eye image as the left end image. Append to the left side of the image.

  When convergence occurs when attention is paid to the right end or left end of the display area, there is a problem of visual field struggle that is different between what is seen between the right eye and the left eye. In this case, the greater the distance between the image given to the right eye and the image given to the left eye, the greater the unnatural feeling given to humans. However, the image processing unit 120 according to the present example gives the same image to the right eye and the left eye at the right end or the left end of the display area. Therefore, the image processing unit 120 according to the present example can provide an image that does not feel unnatural even when congestion occurs in the right end portion or the left end portion of the display area, and the visual field struggle is reduced. it can. It should be noted that, in the central portion of the display area, the condition for fusion of both eyes is maintained, so that it is less likely that congestion will occur compared to the end portion.

  Further, as an example, the image processing unit 120 may add, as a right end image, an image obtained by blurring a portion displayed within a predetermined range from the right end of the display area in the right eye image on the right side of the left eye image. Good. Further, as an example, the image processing unit 120 may add an image obtained by blurring a portion displayed within a predetermined range from the left end of the display area in the left eye image as the left end image on the left side of the right eye image. Good.

  When images with different focus levels are given to the right eye and the left eye, a human feels the given image three-dimensionally. Therefore, such an image processing unit 120 can reduce the visual field struggle and make the viewer feel a stereoscopic effect when congestion occurs in the right end portion or the left end portion of the display area.

  For example, the image processing unit 120 may use the color of the right end image as the average color of the portion of the right eye image that is displayed within a predetermined range from the right end of the display area. Further, in addition to or instead of this, the image processing unit 120 may set the luminance of the right-end image as the average luminance of the portion of the right-eye image that is displayed within a predetermined range from the right end of the display area. . Further, as an example, the image processing unit 120 may set the color of the left end image as an average color of a portion displayed in a predetermined range from the left end of the display area in the left eye image. Further, in addition to or instead of this, the image processing unit 120 may set the luminance of the left-end image as the average luminance of the portion of the left-eye image that is displayed within a predetermined range from the left end of the display area. . Such an image processing unit 120 can give the left eye and the right eye images having the same hue or luminance when congestion occurs in the right end portion or the left end portion of the display area. Can do.

  FIG. 12 shows an example of the image for the left eye enlarged in the right direction and an example of the image for the right eye enlarged in the left direction as still another processing example of the image edge. As an example, the image processing unit 120 enlarges the left eye image to the right and generates an image including the left eye image and the right end image. In this case, the image processing unit 120 enlarges the left-eye image to the right at a larger enlargement ratio as it approaches the left and right ends, and generates an image including the left-eye image and the right-end image. Further, in this case, the image processing unit 120 may not enlarge the image on the left side from a predetermined position (for example, the center position) of the left-eye image.

  Further, as an example, the image processing unit 120 enlarges the right eye image to the left, and generates an image including the right eye image and the left end image. In this case, the image processing unit 120 generates an image including the right-eye image and the left-end image by enlarging the right-eye image to the left with a larger enlargement ratio as it is closer to the left and right ends. Furthermore, in this case, the image processing unit 120 does not have to enlarge the image on the right side from a predetermined position (for example, the center position) of the right-eye image. The image processing unit 120 according to this example can provide a natural image in which images are continuous at the end.

  Further, the image processing unit 120 and the image processing unit 120 may enlarge the image for the left eye and the image for the right eye up and down in accordance with the enlargement ratio in the right direction and the left direction. In this case, the image processing unit 120 and the image processing unit 120 delete portions that are out of the display area in the left-eye image and the right-eye image as a result of being enlarged vertically.

  Further, as an example, the image processing unit 120 displays, on the right side of the left-eye image, a portion displayed within a predetermined range from the right end of the display area in the left-eye image (for example, one column or several columns from the right end). The pixel column) may be added as a right end image. In addition, as an example, the image processing unit 120 displays, on the left side of the right-eye image, a portion displayed within a predetermined range from the left end of the display area in the right-eye image (for example, one column or several columns from the left end). The pixel column) may be added as a left-end image. Such an image processing unit 120 can provide a natural image with continuous images at the end.

  FIG. 13 shows an example of an image for the left eye from which the left end portion is deleted and an example of an image for the right eye from which the right end portion is deleted as still another processing example of the image end portion. For example, instead of adding the right end image to the right side of the left eye image, the image processing unit 120 deletes a predetermined range on the right side of the right eye image. Further, as an example, the image processing unit 120 deletes a predetermined range on the left side of the left eye image instead of adding the left end image to the left side of the right eye image.

  Such an image processing unit 120 can display an image without an image area where a stereoscopic image cannot be provided. Here, the display unit 140 outputs a dark color (for example, a black image) or the like from a portion where the image in the display area is deleted. Therefore, such an image processing unit 120 can provide a natural stereoscopic image as in the case where the outer frame is provided.

  FIG. 14 shows an example of a case where a left-eye image and a right-eye image are generated after a two-dimensional image is enlarged as still another processing example of the image edge portion. For example, the image processing unit 120 may perform the following processing.

  First, the image generation unit 110 enlarges the two-dimensional image left and right by a predetermined distance. For example, the image generation unit 110 enlarges the horizontal width in the left-right direction so that the horizontal width becomes a distance obtained by adding the horizontal width of the display area and the inter-pupil distance. In this case, the image generation unit 110 may enlarge the two-dimensional image in the vertical direction at the same magnification as that in the horizontal direction.

  Subsequently, the image generation unit 110 generates a left-eye image and a right-eye image in which the enlarged two-dimensional image is shifted left and right by a predetermined distance within the display area. As an example, the image generation unit 110 shifts the left-eye image to the left by a distance corresponding to ½ of the inter-pupil distance, and shifts the right-eye image to the right side by a distance corresponding to ½ the inter-pupil distance.

  Subsequently, the image processing unit 120 deletes a predetermined distance range on the right side of the right eye image instead of adding the right end image to the right side of the left eye image. As an example, the image processing unit 120 deletes the range corresponding to the interpupillary distance from the right end of the right-eye image.

  Further, the image processing unit 120 deletes a predetermined distance range on the left side of the left eye image instead of adding the left end image to the left side of the right eye image. As an example, the image processing unit 120 deletes the range corresponding to the inter-pupil distance from the left end of the left-eye image.

  Such an image processing unit 120 can display an image without an image area where a stereoscopic image cannot be provided. Therefore, such an image processing unit 120 can provide a natural stereoscopic image. Note that when the two-dimensional image is enlarged in the vertical direction, the image processing unit 120 may delete a portion of the left-eye image and the right-eye image that exceeds the upper and lower boundaries of the display range.

  FIG. 15 shows an example of a hardware configuration of a computer 800 according to another embodiment. The computer 800, in accordance with a given program, acquires the image acquisition unit 100, the image generation unit 110, the image processing unit 120, the display unit 140, the shift amount determination unit 160, and the screen size acquisition described with reference to FIGS. Functions as the unit 170, the control unit 180, and the viewer specifying unit 190. The computer 800 may further function as the barrier control unit 320.

  A computer 800 according to the present embodiment is connected to a CPU peripheral unit having a CPU 2000, a RAM 2020, a graphic controller 2075, and a display device 2080 connected to each other by a host controller 2082, and to the host controller 2082 by an input / output controller 2084. Input / output unit having communication interface 2030, hard disk drive 2040, and CD-ROM drive 2060, and legacy input / output unit having ROM 2010, flexible disk drive 2050, and input / output chip 2070 connected to input / output controller 2084 With.

  The host controller 2082 connects the RAM 2020 to the CPU 2000 and the graphic controller 2075 that access the RAM 2020 at a high transfer rate. The CPU 2000 operates based on programs stored in the ROM 2010 and the RAM 2020 and controls each unit. The graphic controller 2075 acquires image data generated by the CPU 2000 or the like on a frame buffer provided in the RAM 2020 and displays it on the display device 2080. Instead of this, the graphic controller 2075 may include a frame buffer for storing image data generated by the CPU 2000 or the like.

  The input / output controller 2084 connects the host controller 2082 to the communication interface 2030, the hard disk drive 2040, and the CD-ROM drive 2060, which are relatively high-speed input / output devices. The communication interface 2030 communicates with other devices via a network. The hard disk drive 2040 stores programs and data used by the CPU 2000 in the computer 800. The CD-ROM drive 2060 reads a program or data from the CD-ROM 2095 and provides it to the hard disk drive 2040 via the RAM 2020.

  The input / output controller 2084 is connected to the ROM 2010, the flexible disk drive 2050, and the relatively low-speed input / output device of the input / output chip 2070. The ROM 2010 stores a boot program that is executed when the computer 800 is started and / or a program that depends on the hardware of the computer 800. The flexible disk drive 2050 reads a program or data from the flexible disk 2090 and provides it to the hard disk drive 2040 via the RAM 2020. The input / output chip 2070 connects the flexible disk drive 2050 to the input / output controller 2084 and inputs / outputs various input / output devices via, for example, a parallel port, a serial port, a keyboard port, a mouse port, and the like. Connect to controller 2084.

  A program provided to the hard disk drive 2040 via the RAM 2020 is stored in a recording medium such as the flexible disk 2090, the CD-ROM 2095, or an IC card and provided by the user. The program is read from the recording medium, installed in the hard disk drive 2040 in the computer 800 via the RAM 2020, and executed by the CPU 2000.

  A program installed in the computer 800 and executed by the computer 800 works on the CPU 2000 or the like to cause the computer 800 to operate as an image acquisition unit 100, an image generation unit 110, an image processing unit 120, a display unit 140, a deviation amount determination unit 160, It functions as the screen size acquisition unit 170, the control unit 180, the viewer specifying unit 190, and the like. The information processing described in these programs is read into the computer 800, whereby the image acquisition unit 100, the image generation unit 110, the image, which are specific means in which the software and the various hardware resources described above cooperate with each other. It functions as a processing unit 120, a display unit 140, a deviation amount determination unit 160, a screen size acquisition unit 170, a control unit 180, a viewer identification unit 190, and the like. Then, by realizing the calculation or processing of information according to the purpose of use of the computer 800 in the present embodiment by these specific means, the specific image acquisition unit 100, the image generation unit 110, the image according to the purpose of use are realized. A processing unit 120, a display unit 140, a shift amount determination unit 160, a screen size acquisition unit 170, a control unit 180, a viewer identification unit 190, and the like are constructed.

  As an example, when communication is performed between the computer 800 and an external device or the like, the CPU 2000 executes a communication program loaded on the RAM 2020, and based on the processing contents described in the communication program, the communication interface A communication process is instructed to 2030. Under the control of the CPU 2000, the communication interface 2030 reads transmission data stored in a transmission buffer area or the like provided on a storage device such as the RAM 2020, the hard disk drive 2040, the flexible disk 2090, or the CD-ROM 2095, and sends it to the network. The reception data transmitted or received from the network is written into a reception buffer area or the like provided on the storage device. As described above, the communication interface 2030 may transfer transmission / reception data to / from the storage device by a DMA (direct memory access) method. Instead, the CPU 2000 transfers the storage device or the communication interface 2030 as a transfer source. The transmission / reception data may be transferred by reading the data from the data and writing the data to the communication interface 2030 or the storage device of the transfer destination.

  The CPU 2000 is all or necessary from among files or databases stored in an external storage device such as a hard disk drive 2040, a CD-ROM drive 2060 (CD-ROM 2095), and a flexible disk drive 2050 (flexible disk 2090). This portion is read into the RAM 2020 by DMA transfer or the like, and various processes are performed on the data on the RAM 2020. Then, CPU 2000 writes the processed data back to the external storage device by DMA transfer or the like. In such processing, since the RAM 2020 can be regarded as temporarily holding the contents of the external storage device, in the present embodiment, the RAM 2020 and the external storage device are collectively referred to as a memory, a storage unit, or a storage device. Various types of information such as various programs, data, tables, and databases in the present embodiment are stored on such a storage device and are subjected to information processing. Note that the CPU 2000 can also hold a part of the RAM 2020 in the cache memory and perform reading and writing on the cache memory. Even in such a form, the cache memory bears a part of the function of the RAM 2020. Therefore, in the present embodiment, the cache memory is also included in the RAM 2020, the memory, and / or the storage device unless otherwise indicated. To do.

  In addition, the CPU 2000 performs various operations, such as various operations, information processing, condition determination, information search / replacement, etc., described in the present embodiment, specified for the data read from the RAM 2020 by the instruction sequence of the program. Is written back to the RAM 2020. For example, when performing the condition determination, the CPU 2000 determines whether or not the various variables shown in the present embodiment satisfy the conditions such as large, small, above, below, equal, etc., compared to other variables or constants. If the condition is satisfied (or not satisfied), the program branches to a different instruction sequence or calls a subroutine.

  Further, the CPU 2000 can search for information stored in a file or database in the storage device. For example, in the case where a plurality of entries in which the attribute value of the second attribute is associated with the attribute value of the first attribute are stored in the storage device, the CPU 2000 displays the plurality of entries stored in the storage device. The entry that matches the condition in which the attribute value of the first attribute is specified is retrieved, and the attribute value of the second attribute that is stored in the entry is read, thereby associating with the first attribute that satisfies the predetermined condition The attribute value of the specified second attribute can be obtained.

  The program or module shown above may be stored in an external recording medium. As the recording medium, in addition to the flexible disk 2090 and the CD-ROM 2095, an optical recording medium such as DVD or CD, a magneto-optical recording medium such as MO, a tape medium, a semiconductor memory such as an IC card, and the like can be used. Further, a storage device such as a hard disk or a RAM provided in a server system connected to a dedicated communication network or the Internet may be used as a recording medium, and the program may be provided to the computer 800 via the network.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that the output can be realized in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the description, and the drawings, even if it is described using “first”, “next”, etc. for convenience, it means that it is essential to carry out in this order. It is not a thing.

DESCRIPTION OF SYMBOLS 10 Display apparatus, 100 Image acquisition part, 110 Image generation part, 120 Image processing part, 140 Display part, 150 Image guidance part, 160 Deviation amount determination part, 170 Screen size acquisition part, 180 Control part, 190 Viewer identification part , 310 barrier unit, 312 transmission unit, 314 light shielding unit, 320 barrier control unit, 500 first display region, 510 second display region, 520 third display region, 900 display region, 910 display region, 800 computer, 2000 CPU, 2010 ROM, 2020 RAM, 2030 communication interface, 2040 hard disk drive, 2050 flexible disk drive, 2060 CD-ROM drive, 2070 input / output chip, 2075 graphic controller, 2080 display device, 2082 host Controller, 2084 input-output controller, 2090 a flexible disk, 2095 CD-ROM

Claims (9)

An image generating device that generates an image for the right eye that should be visually recognized by the right eye of the viewer and an image for the left eye that should be visually recognized by the left eye of the viewer,
The right-eye image and the left-eye image are obtained by making the amount of deviation, which is the difference between the horizontal positions of the corresponding points of the corresponding objects on the display screen, different between the central area and the peripheral area in the horizontal direction of the display screen. An image generation apparatus including an image generation unit that generates an image.   The said image generation part produces | generates the said image for right eyes, and the said image for left eyes in which the deviation | shift amount of the corresponding point on the said display screen is smaller than the said center area | region in the said surrounding area of the said display screen. The image generating apparatus described.   The image generation unit shifts the central region of the two-dimensional image left and right by a first shift amount, and shifts the peripheral region of the two-dimensional image left and right by a second shift amount smaller than the first shift amount, The image generation apparatus according to claim 1, wherein the image for the right eye and the image for the left eye are generated. A screen size acquisition unit that acquires information indicating a size of a display screen that displays the right-eye image and the left-eye image;
The image generation unit, when the information acquired by the screen size acquisition unit indicates a size smaller than a predetermined size, the right eye image having the same amount of deviation in the central region and the peripheral region of the display screen When the information for the left eye is generated and the information acquired by the screen size acquisition unit indicates a size equal to or smaller than a predetermined size, the shift amount for the right eye is smaller in the peripheral area of the display screen than in the central area. The image generation device according to claim 1, wherein the image generation device generates an image and the image for the left eye. A screen size acquisition unit that acquires information indicating a size of a display screen that displays the right-eye image and the left-eye image;
The image generation unit, when the size indicated by the information acquired by the screen size acquisition unit is larger, the right eye image and the left eye having a smaller shift amount than the central region in the peripheral region of the display screen. The image generation apparatus according to claim 1, which generates an ophthalmic image. The image generation apparatus according to claim 1, further comprising a display unit that displays the right-eye image and the left-eye image generated by the image generation unit. The image generation apparatus according to claim 6, further comprising an image guide unit that is provided on a viewer side of the display unit and guides the right-eye image and the left-eye image in different directions. An image generation method for generating an image for a right eye to be visually recognized with a right eye of a viewer and an image for a left eye to be visually recognized with a left eye of a viewer,
The right-eye image and the left-eye image are obtained by making the amount of deviation, which is the difference between the horizontal positions of the corresponding points of the corresponding objects on the display screen, different between the central area and the peripheral area in the horizontal direction of the display screen. An image generation method comprising an image generation step of generating an image. A program for an image generation device that generates an image for a right eye to be visually recognized by a viewer's right eye and an image for a left eye to be visually recognized by a viewer's left eye, the computer comprising:
The right-eye image and the left-eye image are obtained by making the amount of deviation, which is the difference between the horizontal positions of the corresponding points of the corresponding objects on the display screen, different between the central area and the peripheral area in the horizontal direction of the display screen. A program that functions as an image generation unit that generates an image.

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