JP2005165032A - Stereoscopic video display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stereoscopic video display apparatus, capable of suppressing eyestrain by removing or reducing the mismatching of a visual system and capable of being adaptive to the reproduction positions of various stereoscopic images. <P>SOLUTION: The stereoscopic video display device 10 is constituted of a display 21 for displaying a left eye image and a right eye image on a screen; an image display processing means for performing processing for displaying the right and left images on the screen of the display 21; a telecentric optical system 22 arranged between an observer and the display 21; a driving means 23 for moving the display 21, in a direction of bringing the display 21 close to and/or separating it from the telecentric optical system 22; and a control means for sending a control signal for controlling the operation of the driving means to the driving means 23 in synchronism with the display processing of the right and left images and moving the display 21 back and forth, according to changes in the depth directions of reproduction positions of noticed points in the right and left images. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a stereoscopic video presentation device that presents a stereoscopic video to an observer, and presents a stereoscopic video using, for example, a foreground image including a gazing point (target) and a background image as a background thereof. Can be used in some cases.

  Conventionally, when a stereoscopic image is presented to an observer, the corresponding points of the left-eye image and the right-eye image are shifted on the left and right and displayed on the screen, and the image using the binocular parallax is displayed. A method of creating a three-dimensional effect by projecting each of the points to the front side of the screen or retracting the points to the back side of the screen is employed.

  FIG. 14 is an explanatory diagram of the principle of a conventional stereoscopic video presenting method using such binocular parallax. In FIG. 14, by using a polarizing filter or a liquid crystal shutter (not shown), an image observed by the left eye and right eye of the observer is separated, and the left eye displayed on the image presentation surface 90 by the left eye. Only the image is observed, and only the right-eye image displayed on the image presentation surface 90 is observed by the right eye. For example, if the observer observes the target of point P1 with the left eye and observes the target of point P2 corresponding to this with the right eye, a screen that is the intersection of the left eye and the right eye in the line-of-sight direction At the front P3 point, those objects are fused and reproduced as a stereoscopic image.

  By the way, binocular stereoscopic video is expected to have a social and economic ripple effect as a new video information media, so various researches have been made so far, but the application area is unclear, At present, it has not yet spread due to causes such as eye strain caused by observation. In particular, eye strain caused by stereoscopic image observation is considered to be caused mainly by inconsistencies in the visual system, and various studies have been conducted so far. As shown in FIG. 14, this visual system mismatch is caused when the stereoscopic image using binocular parallax is observed, while the convergence acts on the position of the reproduced stereoscopic image, whereas the left eye and the right eye The adjustment of each lens is a contradiction in the depth information between the convergence and the adjustment caused by being fixed to the image display surface 90. In the natural vision state, the depth information of the convergence and the adjustment is the same, and thus eye strain does not occur.

  Therefore, in order to solve such a problem of eye strain, the applicant of the present application induced a shift effect of the adjustment distance by adding a single focus lens to the observation glasses in the stereoscopic image observation, and further, the convergence property There has already been proposed a stereoscopic image observation apparatus that can reduce the inconsistency in visibility by controlling the reproduction position of a stereoscopic image based on human visual characteristics such as adjustment (see Patent Document 1). According to this stereoscopic image observation apparatus, the refraction value of the crystalline lens during stereoscopic image observation can be approximated to the reproduction position of the stereoscopic image, and the subjective symptoms of eye strain can be reduced by using a correction lens. can get.

JP 2002-341289 A (paragraph [0012], FIG. 1, abstract)

  However, in the stereoscopic image observation apparatus described in Patent Document 1 described above, the inconsistency of the visual system can be eliminated or reduced. However, since a single focus lens is used, the range that can be corrected is limited, and various There remains a problem that it is difficult to cope with the reproduction position of the stereoscopic image.

  In order to expand the range that can be corrected, a method of arranging a lens system capable of variably adjusting the focal length such as an autofocus lens in front of the eyes can be considered, but a large-scale device is attached to the observer's head. As a result, there is a problem that it is not realistic. Further, when such a lens system is used, the focal length also changes, but there is a problem that the angle of view also changes because the degree of the lens changes. For example, when observing a nearby object, there is a problem in that the object becomes larger or smaller depending on the reproduction position, for example, the viewing angle is widened.

  An object of the present invention is to provide a stereoscopic image display device that can eliminate or reduce visual system inconsistencies to suppress eye strain, and can correspond to various stereoscopic image reproduction positions. is there.

  The present invention is a stereoscopic video presentation device that presents a stereoscopic video to an observer, a display on which a left-eye image and a right-eye image are displayed on a screen, and a left-eye image and a left-eye image on the display screen. Image display processing means for performing processing for displaying an image for the right eye, a telecentric optical system disposed between the observer and the display, and drive means for moving the display in a direction in which the display is moved closer to and away from the telecentric optical system; By sending a control signal for controlling the operation of the driving means in synchronization with the display processing of the left eye image and the right eye image by the image display processing means to the left eye image and for the right eye And control means for moving the display in accordance with the change in the depth direction of the position at which the point of interest set as the corresponding point in the image is reproduced. Is shall.

  Here, the “left-eye image” and the “right-eye image” may be a real image, or an image obtained by two-dimensionalizing 3D computer graphics by a rendering process.

  In addition, “move the display according to the change in the depth direction of the position where the gazing point is reproduced” means that when the reproduction position of the gazing point approaches the observer, the display is moved in the direction approaching the observer, This means that when the reproduction position of the gazing point moves away from the observer, the display is moved in a direction away from the observer.

  Furthermore, the control of the reproduction position of the gazing point may be performed only by moving the display, or the movement of the display, the gazing point in the image for the left eye, and the corresponding gazing point in the image for the right eye. May be performed in combination with binocular parallax that shifts in the horizontal direction. However, it is preferable to perform only the movement of the display from the viewpoint of further reducing the inconsistency of the visual system.

  In the present invention, since the display is moved back and forth in accordance with the change in the depth direction of the reproduction position of the gazing point, the adjustment of the crystalline lens works following the position of the moving display, and the adjustment distance Dynamic optical correction is realized. And since the control of the reproduction position of the gazing point is performed with the movement of the display, the position of the display can be matched or brought close to the reproduction position of the gazing point. It works at the position of or near the position. Accordingly, during observation, the convergence distance and the adjustment distance can be matched or brought close to each other. Therefore, compared with the conventional method of controlling the reproduction position of the gazing point only by changing the amount of parallax between the image for the left eye and the image for the right eye, eye strain due to inconsistency in the visual system is suppressed. Will be able to.

  In addition, since the control of the reproduction position of the gazing point is performed with the movement of the display, the correction range is larger than in the case of the optical correction using the single focus lens described in Patent Document 1 described above. It becomes wide and can cope with the reproduction position of various stereoscopic images.

  In addition, since a telecentric optical system is arranged between the observer and the display, the viewing angle (viewing angle) can be kept constant or substantially constant even when the display moves back and forth. Optical correction without accompanying is realized.

  When the display is moved, the viewing angle is kept constant or substantially constant as described above, but the line-of-sight direction changes. ) Can be easily controlled.

  As described above, by utilizing the physical position movement of the display and the refraction of the telecentric optical system, the convergence and diverging motion in stereoscopic image observation is induced, and the above-described purpose is achieved.

  Further, in the above-described stereoscopic video presenting apparatus, the image display processing means is configured such that the gazing point in the left-eye image and the corresponding gazing point in the right-eye image are at the center position in the horizontal direction on the display screen. It is desirable that the processing for displaying these left-eye image and right-eye image in a state of overlapping is performed.

  In this way, when the processing for overlapping the gazing point in the image for the left eye and the gazing point in the image for the right eye is performed, the reproduction position of the gazing point and the display position can be matched. , The congestion works on the position of the image display surface of the display. Therefore, both the convergence and the adjustment act on the position of the image display surface of the display, so that the convergence distance and the adjustment distance can always be matched during observation. For this reason, it is possible to further suppress eye strain based on visual system mismatch.

  Further, in the above-described stereoscopic video presenting apparatus, the image display processing means performs a process of displaying a left-eye foreground image and a right-eye foreground image constituting a foreground image including a gazing point on a display screen. Processing means and distant view image display processing means for performing processing for displaying a distant view image for the left eye and a distant view image for the right eye constituting a distant view image as a background located farther from the gazing point on the display screen. The control means is configured to move the display in accordance with a change in the depth direction of the position for reproducing the gazing point set in the foreground image by sending a control signal to the drive means, and foreground image display The processing means performs processing in a state where the gazing point in the left-eye foreground image and the corresponding gazing point in the right-eye foreground image overlap at the horizontal center position on the display screen. The left-eye foreground image and the right-eye foreground image are displayed, and the far-field image display processing means is adapted to move the display forward or backward to move the left-eye foreground image and the right-eye foreground image. It is desirable that the image is shifted in the cross direction or the same direction.

  As described above, when the processing for controlling the reproduction position of the gazing point is performed by moving the display for the foreground image and the processing for shifting the left and right images with the movement of the display is performed for the distant view image, the gazing point is changed. For near-field images, it is possible to suppress eye strain based on visual system inconsistencies by always matching the convergence distance and the adjustment distance, and for distant view images, the parallax caused by the movement of the display It is possible to cancel the change and keep the distant view image at a certain depth distance.

  In the stereoscopic video presenting apparatus described above, the foreground image display processing means performs a process for reducing or enlarging the left-eye foreground image and the right-eye foreground image, respectively, as the display moves forward or backward. Also good.

  When the processing for reducing or enlarging the foreground image with the movement of the display is performed as described above, when the reproduction position of the target (subject) including the gazing point is moved forward or backward by the movement of the display, The viewing angle of the object can be changed. That is, in a natural vision state, when an object (the same object) whose physical size does not change moves forward or backward, the viewing angle decreases when the object moves away from the observer, and when the object approaches the observer When the telecentric optical system is arranged, the viewing angle is kept constant or substantially constant even if the object including the gazing point is moved forward or backward when the telecentric optical system is arranged. Therefore, it looks different from the state of natural vision, and the apparent size of the object changes. Therefore, when the display moves forward and away from the observer, the near-field image is reduced to reduce the viewing angle, while when the display moves backward and approaches the observer, the near-field image is enlarged and the viewing angle is increased. By increasing the value, it becomes possible to make it look the same as in the natural vision state.

  The stereoscopic image presenting apparatus described above further includes a lens refraction value measuring unit that measures the refraction value of the lens of the left eye and / or the right eye of the observer, and the measurement result by the lens refraction value measuring unit is displayed in the foreground image display. Feedback is provided to at least one of display processing of the foreground image by the processing means, display processing of the distant view image by the distant view image display processing means, or operation control processing of the driving means by the control means performed to move the display. It is desirable to have a configuration.

  In this way, when the measurement result by the lens refraction value measuring means is configured to be fed back to the stereoscopic image presentation process, it is possible to present an appropriate stereoscopic image in accordance with the actual observation state of the observer. Become. For example, the time information is fed back, the speed of control of the reproduction position of the gazing point is changed according to the follow-up speed of the adjustment by the observer, the distance information is fed back, and the three-dimensional object that is not blurred to the myopic observer It is possible to present an image.

  As described above, according to the present invention, the playback position of the gazing point is controlled by moving the display back and forth, so that eye strain can be suppressed by eliminating or reducing inconsistencies in the visual system, In addition, it can handle various stereoscopic image playback positions, and a telecentric optical system is placed between the viewer and the display, so that the viewing angle can be kept constant or substantially constant even when the display moves. There is an effect that can be done.

  An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an overall configuration of a stereoscopic video presenting apparatus 10 of the present embodiment. FIG. 2 is a longitudinal sectional view of the apparatus main body 20. In FIG. 3, the configuration of the stereoscopic image presentation device 10 is shown along with the flow of signals and light. FIG. 4 is an explanatory diagram of the structure of the liquid crystal display 21 on which a micropole is mounted. 5 is an explanatory diagram of an optical path formed by the telecentric optical system 22, and FIG. 6 is an explanatory diagram of a relationship between a physical screen and an apparent screen through the telecentric optical system 22. 7 to 10 are explanatory diagrams of distant view image display processing. Further, FIG. 11 is an explanatory diagram of a method for measuring the refractive value of the crystalline lens, and FIGS. 12 and 13 show the results of a comparative experiment in which the refractive value of the crystalline lens was actually measured.

  1 and 3, a stereoscopic video presentation device 10 includes a device main body 20 that reproduces a stereoscopic video, a computer 40 that supplies an image signal to the device main body 20, a controller 70 that supplies a control signal to the device main body 20, And an infrared optometer 80 which is a lens refraction value measuring means for measuring the refraction value of the lens of the stereoscopic image observer.

  2 and 3, the apparatus main body 20 is arranged between a liquid crystal display (LCD) 21 on which a left-eye image and a right-eye image are displayed on the screen, and between an observer and the liquid crystal display 21. The telecentric optical system 22, the stepping motor 23 that is a driving means for moving the liquid crystal display 21 in the direction of approaching and separating from the telecentric optical system 22, and the viewing window 24 formed in the housing of the apparatus main body 20 (FIG. 1). (See FIG. 7), and near the viewing window 24 and in front of the polarizing filters 25 and 26 (observer side). And a dichroic mirror 27 arranged at the position of.

  1 and 3, the computer 40 is a work display that is displayed on the screen in a state where an input means 41 such as a mouse and a keyboard and an image for the left eye and an image for the right eye are overlaid for work and monitoring. 42, a processing unit 50 that performs various processes necessary for presenting a stereoscopic video, and a storage unit 60 that stores data used in processing by the processing unit 50.

  In FIG. 3, the processing means 50 includes an image display processing means 51 that performs processing for displaying a left-eye image and a right-eye image on the screen of the liquid crystal display 21 that constitutes the apparatus main body 20, and an image display processing means 51. The control signal transmitting means 52 is configured to transmit a control signal for controlling the operation of the stepping motor 23 to the controller 70 in synchronization with the display processing of the left eye image and the right eye image.

  The image display processing means 51 includes a foreground image display processing means 51A that performs processing for displaying a left-eye foreground image and a right-eye foreground image that form a foreground image including a gazing point on the screen of the liquid crystal display 21, and a liquid crystal display. 21 includes a distant view image display processing means 51B for performing processing for displaying a distant view image for the left eye and a distant view image for the right eye that form a distant view image that is a background located farther than the gazing point. ing. Further, the image display processing means 51 performs processing for displaying the same screen as the liquid crystal display 21 on the work display 42.

  In this embodiment, the foreground image display processing means 51A is configured such that the gazing point in the left-eye foreground image and the corresponding gazing point in the right-eye foreground image correspond to the center position in the horizontal direction on the screen of the liquid crystal display 21. In this state, the processing for displaying these left-eye foreground image and right-eye foreground image is performed. When the user selects, the foreground image display processing means 51A reduces or enlarges the left-eye foreground image and the right-eye foreground image as the liquid crystal display 21 moves forward or backward, respectively. Processing is also performed. That is, when the liquid crystal display 21 is moved forward (in a direction away from the observer) from a reference position (for example, 2.0D = equivalent to a virtual distance of 50 cm), the left-eye foreground image and the right-eye foreground image are On the other hand, when the liquid crystal display 21 is moved backward (in the direction approaching the observer) from the reference position, the left-eye foreground image and the right-eye foreground image are respectively enlarged.

  The distant view image display processing means 51B performs a process of shifting the distant view image for the left eye and the distant view image for the right eye in the crossing direction or the ipsilateral direction as the liquid crystal display 21 moves forward or backward. That is, when the liquid crystal display 21 is moved forward (in a direction away from the observer) from a reference position (for example, 2.0D = equivalent to a virtual distance of 50 cm), the left-eye distant view image and the right-eye distant view image are When the liquid crystal display 21 is moved backward (in the direction approaching the observer) from the reference position, the left-eye far view image and the right-eye far view image are respectively in the same direction. Shifted (see FIGS. 7 and 8).

  The storage unit 60 includes an image storage unit 61 that stores an image as stereoscopic video content, a reproduction information storage unit 62 that stores reproduction information of a foreground image and a distant view image, and user information that stores information on each observer individually. The storage means 63 is included.

  The image storage means 61 stores a foreground image and a distant view image as stereoscopic video content.

  The foreground image is, for example, an image of the butterfly 1 or the like (see FIG. 1), and a series of a plurality of image groups (an image group whose drawing contents change in time series, for example, when the butterfly moves its wings) In the case where different images are presented by the left and right eyes, the left and right eyes are each composed of a series of image groups. Therefore, when the same image is presented to the left and right eyes, a single image is used as both the left-eye foreground image and the right-eye foreground image, so a set of a plurality of image groups is prepared. In this case, the foreground image itself (for example, the butterfly itself) looks planar rather than a three-dimensional image, and a sense of depth occurs due to the movement of the foreground image back and forth and the relative positional relationship with the distant view image. become. On the other hand, when different images are presented by the left and right eyes, the pair of left-eye foreground image and right-eye foreground image displayed on the liquid crystal display 21 at the same moment are different images, and thus the foreground image itself. (For example, the butterfly itself) also has an uneven feeling and is reproduced as a three-dimensional image.

  The distant view image is, for example, an image of the background mountain 2 or the like (see FIG. 1). One image (when the same image is presented to the left and right eyes) or two images (when different images are presented to the left and right eyes) Consists of images. The distant view image is the same as the case of the foreground image. If the same image is used for the left eye far view image and the right eye far view image, the distant view image itself (for example, the mountain itself) looks planar, while the left view image When different images are used for the far-eye image for the eye and the far-eye image for the right eye, the distant view image itself (for example, the mountain itself) also has an uneven feeling and is reproduced as a stereoscopic image.

  The playback information storage means 62 designates and sets several sequences of foreground image motion (time-series playback positions in the depth direction, time and position in diopter (D) units). The playback position can be set in a range from 2.5D (40 cm) to infinity, for example.), Foreground image switching interval (for example, the default value is 1.0 second, 0 .. can be set between 1 second and 30.0 seconds), foreground image transmission color, operating system standard color selection, and foreground image size on the actual screen of the liquid crystal display 21 as the playback position of the foreground image changes Selection of whether to reduce or enlarge the image, viewing angle of the foreground image on the image display surface (for example, the default value is 4 degrees), distance to the playback position of the foreground image (for example, the default value is 100 m, 1 m to 10 Various settings such as selection of whether to move linearly in the dimension of meter (m) or linearly in the dimension of diopter (D) when the foreground image moves between two designated points. Is memorized. In addition, the numerical value of a diopter (D) unit is a reciprocal number of meter distance.

  The user information storage means 63 stores the user name, the distance between the left and right eyes, a refraction value (left S value, left C value, right S value, right C value), and a correction value calculation method (left eye S + C / 2). And the right eye S + C / 2, the average of them, or manual editing), and various information such as correction values are stored. The correction value may be calculated in real time using the refraction value measured during observation with the infrared optometer 80.

  Each means 51 and 52 included in the processing means 50 is realized by a central processing unit (CPU) provided inside the main body of the computer 40 and one or a plurality of programs that define the operation procedure of the CPU. Is done.

  Each means 61 to 63 included in the storage means 60 is preferably realized by, for example, a hard disk or the like. However, as long as there is no problem in storage capacity, access speed, etc., ROM, EEPROM, flash memory, RAM, MO, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, FD, magnetic tape, or a combination thereof may be employed.

  2 and 3, when a control signal is transmitted from the control signal transmission unit 52 to the controller 70 in synchronization with the display processing of the left-eye foreground image and the right-eye foreground image by the image display processing unit 51, the controller In 70, this signal is converted into a signal for controlling the operation of the stepping motor 23 and supplied to the stepping motor 23. The stepping motor 23 operates based on a control signal supplied from the controller 70, and moves the liquid crystal display 21 back and forth via a belt or the like (not shown). As a result, the liquid crystal display 21 moves back and forth in accordance with the change in the depth direction of the reproduction position of the gazing point set as the corresponding point in the left-eye foreground image and the right-eye foreground image. . Therefore, the control signal transmitting means 52 and the controller 70 constitute a control means 71 that controls the operation of the stepping motor 23 and moves the liquid crystal display 21 back and forth. In the present embodiment, the foreground image display processing means 51A causes the gazing point in the left-eye foreground image and the corresponding gazing point in the right-eye foreground image to be centered in the horizontal direction on the screen of the liquid crystal display 21. Therefore, the control means 71 performs control to move the liquid crystal display 21 to the reproduction position of the gazing point set in the foreground image by sending a control signal to the stepping motor 23.

  In FIG. 4, the liquid crystal display 21 includes an LCD panel 21A and a micropole (μPol) 21B attached to the front side (observer side) of the display screen of the LCD panel 21A. As shown in FIG. 4, the micropole 21B is an optical system composed of fine polarizing elements, and is alternately orthogonal to each line (each line running in the horizontal direction) according to the pixel line of the LCD panel 21A. A polarizing element is arranged. For example, the Nth line 21B (N) and the (N + 2) th line 21B (N + 2) have the same α-degree polarization direction, and the (N + 1) th line 21B (N + 1) and ( The line 21B (N + 3) in the (N + 3) th row has the same polarization direction of β degrees, and the difference between α degrees and β degrees is 90 degrees. In the observation, the left-eye image and the right-eye image are separated by using the polarization filters 25 and 26 (see FIG. 7) whose polarization directions are orthogonal to each other correspondingly. Note that it is possible to select whether the left-eye image is an even line and the right-eye image is an odd line, or vice versa.

  2 and 5, the telecentric optical system 22 is configured by arranging a first lens 22A, a second lens 22B, a third lens 22C, and a fourth lens 22D in this order from the side closer to the observer. . Table 1 shows the specifications of each of these four lenses 22A, 22B, 22C, 22D.

  In Table 1, with respect to the difference between the front surface and the back surface, the surface facing the observer is the front surface. As for the interval, the uppermost interval in Table 1 is the interval between the positions of the left and right eyes and the center position of the surface of the first lens 22A, and the second interval from the top is the first lens 22A. Is the distance between the center position of the front surface and the center position of the back surface (the thickness of the center portion of the first lens 22A), and the third distance from the top is the center position of the back surface of the first lens 22A and the second lens 22B. The distance from the center position of the front surface, and the fourth distance from the top is the distance between the center position of the front surface of the second lens 22B and the center position of the back surface (the thickness of the center portion of the second lens 22B), Similarly, the lowermost interval is the interval between the center position of the back surface of the fourth lens 22D and the reference position of the liquid crystal display 21 (2.0D = position corresponding to a virtual distance of 50 cm).

  As shown in FIG. 5, when an optical path formed through the telecentric optical system 22 is taken into consideration, if the position of the liquid crystal display 21 moves away from the telecentric optical system 22, that is, moves away from the observer. The left eye gaze direction (direction in which the center of the screen is viewed) is as indicated by arrows E1, E2, and E3, and the right eye gaze direction (direction in which the center of the screen is viewed) is indicated by arrows F1, F2, and F3. As shown in the figure, each of them spreads outward, the angle of convergence becomes smaller, and gradually changes to a state of looking far away. On the other hand, although the gaze directions of the left and right eyes change, the viewing angles φ1, φ2, and φ3 for viewing the entire screen when the gaze directions are arrows E1, E2, E3 or arrows F1, F2, F3 are constant or It is kept almost constant.

In FIG. 6, when the actual screen (physical screen) of the liquid crystal display 21 located at a physical distance Z from the left and right eyes is viewed with the right eye through the telecentric optical system 22, the first lens 22 </ b> A. A viewing angle φ for viewing the entire screen is formed by the optical paths KL and KR formed between the surface of the lens and the right eye. The same applies to the left eye when it is reversed in the horizontal direction. At this time, if the line-of-sight directions of the left eye and the right eye (the direction of viewing the center of the actual screen of the liquid crystal display 21) are the directions of arrows E and F, the extension lines in the directions of arrows E and F (in the figure) The position where the two-dot chain line intersects becomes the position of the apparent screen G, and the distance d from the left and right eyes to the position of the apparent screen G is called a virtual distance. The size of the apparent screen G at the position of the virtual distance d is determined as an interval between points where the extended lines (two-dot chain lines in the figure) of the optical paths KL and KR and the apparent screen G intersect. Further, the point TZ at an arbitrary position on the actual screen (physical screen) of the liquid crystal display 21 is an extension line of the optical path KT (two-dot chain line in the figure) on the apparent screen G at the position of the virtual distance d. ) And the apparent screen G appear as a point Td at the position where it intersects. For example, when the actual screen size of the liquid crystal display 21 is 6 inches and the liquid crystal display 21 is moved so that the apparent screen G is positioned at the virtual distance d = 50 cm (0.5 m), The size of the screen G is 15 inches, and the viewing angle φ at this time is about 34 degrees. In the present embodiment, the position where the apparent screen G is the virtual distance d = d ₁ = 50 cm (0.5 m) (1 / 0.5 = 2.0 D in diopter units) is set as the reference position.

  In FIG. 11, a dichroic mirror 27 that reflects only the infrared wavelength is disposed between the polarizing filters 25 and 26 and the left and right eyes in a state inclined by 45 degrees with respect to the polarizing filters 25 and 26. . The infrared optometer 80 is a device that measures the refraction value based on a change in the thickness of the crystalline lens, and is provided to measure the refractive value of the crystalline lens of an observer who is observing a stereoscopic image in real time. The infrared rays emitted from the infrared optometer 80 are reflected by the dichroic mirror 27 and bent at a right angle to reach the crystalline lens as indicated by the dotted line in the figure. Then, the infrared light emitted from the crystalline lens is again reflected by the dichroic mirror 27, bent at a right angle, and returned to the infrared optometer 80. On the other hand, the light of the image emitted from the liquid crystal display 21 passes through the dichroic mirror 27 and reaches the crystalline lens as shown by the solid line in the figure.

  As shown in FIG. 3, the measurement result of the refraction value by the infrared optometer 80 is transmitted as feedback information to the processing means 50, and the foreground image display processing by the foreground image display processing means 51A, the distant view image display processing means 51B. Is used as correction information when performing a distant view image display process or an operation control process of the stepping motor 23 by the control means 71 performed to move the liquid crystal display 21.

  In the present embodiment, a stereoscopic video is presented to an observer by the stereoscopic video presenting apparatus 10 as follows.

  First, the input means 41 is operated to set reproduction information such as the reproduction position of the gazing point in the foreground image and store it in the reproduction information storage means 62 and also set user information such as the distance between the left and right eyes. And stored in the user information storage means 63. Note that the gaze point of the foreground image does not necessarily have to be within the contour of the object to be represented as the motion of the butterfly 1 or the like (that is, the body portion, the wing portion, or the foot portion of the butterfly 1). It may be set outside the contour of the object to be expressed.

  Next, in the state where the observer is looking into the inside of the apparatus main body 20 from the viewing window 24, the foreground image display processing unit 51A displays the foreground image for the left eye and the foreground image for the right eye stored in the image storage unit 61. It is displayed on the screen of the liquid crystal display 21. At this time, as shown in FIG. 7, the foreground image display processing means 51 </ b> A includes a gazing point (for example, the body part of the butterfly 1) in the left-eye foreground image and the corresponding right-eye foreground image in the foreground image for the right eye. The gazing point is displayed so as to overlap at the center position in the horizontal direction of the screen.

Further, when the user selects, the foreground image display processing means 51A, as shown in FIG. 7, for the foreground image including the butterfly 1A reproduced at the reference position (virtual distance d = d ₁ ) The near-field image including the butterfly 1B reproduced at a position farther than the reference position (virtual distance d> d ₁ ) is reduced and displayed, while being reproduced at a position closer to the reference position (virtual distance d <d ₁ ). The close-up image including the butterfly 1C to be displayed may be enlarged and displayed. In this case, the reduction / enlargement ratio is inversely proportional to the virtual distance d, for example. Therefore, when the near-field image is not reduced or enlarged, the viewing angles of the butterfly 1A, the butterfly 1B, and the butterfly 1C are kept constant or substantially constant depending on the properties of the telecentric optical system 22, and as a result, the reference The butterfly 1B located farther than the butterfly 1A at the position has a larger apparent size, while the butterfly 1C located closer to the butterfly 1A at the reference position has a smaller apparent size. However, by performing the reduction / enlargement, the viewing angle of the butterfly 1B farther than the butterfly 1A at the reference position becomes smaller, and the viewing angle of the butterfly 1C nearer than the viewing angle of the butterfly 1A at the reference position. As a result, the butterfly 1A at the reference position, the butterfly 1B at the far position, and the butterfly 1C at the near position have the same apparent size.

  Then, in synchronization with the display processing by the foreground image display processing unit 51A as described above, the control signal transmission unit 52 is based on the information on the reproduction position of the gazing point of the foreground image stored in the reproduction information storage unit 62. The controller 70 converts the control signal and supplies it to the stepping motor 23. Then, the stepping motor 23 operates and the liquid crystal display 21 moves to the reproduction position of the gazing point in the foreground image. For example, if the reproduction position of the gazing point in the foreground image is apparently 100 cm from the position of the left and right eyes, the liquid crystal display 21 has an apparent screen G (see FIG. 6) with a virtual distance d = 100 cm (1. 0D). In addition, when performing stereoscopic video presentation that gives the foreground image itself (for example, butterfly 1 itself) a feeling of unevenness by using the left-eye foreground image and the right-eye foreground image as different images, the gaze point of the foreground image (for example, , The body part of the butterfly 1) only needs to be reproduced on the apparent screen G with the virtual distance d = 100 cm, and for points other than the point of sight (for example, the wing part or foot part of the butterfly 1), the virtual distance d = It may be reproduced before and after the apparent screen G of 100 cm.

Further, in conjunction with the foreground image display processing by the foreground image display processing means 51A as described above, the far-eye image display processing means 51B converts the far-eye image for the left eye and the far-eye image for the right eye stored in the image storage means 61. It is displayed on the screen of the liquid crystal display 21. At this time, the distant view image display processing means 51B determines the information on the reproduction position of the distant view image stored in the reproduction information storage means 62 (distance D in FIG. 9) and the distance between the left and right eyes stored in the user information storage means 63. Based on the information (distance L in FIG. 9) and the like, as shown in FIG. 7, when the liquid crystal display 21 moves farther (d> d ₁ ) than the reference position (equivalent to the virtual distance d = d ₁ ), If the far-eye image for the left eye and the far-sight image for the right eye are shifted in the crossing direction, respectively, and the liquid crystal display 21 moves closer to the reference position (d <d ₁ ), the far-eye image for the left eye And the far-eye image for the right eye are shifted in the same direction.

For example, when it is desired to always reproduce a distant view image such as the background mountain 2 (see FIG. 1) from the position of the left and right eyes to an apparent distance D (for example, D = 100 m), the liquid crystal display 21 is in the foreground. Even if the gazing point in the image moves as the playback position changes, the line of sight for viewing a specific point (for example, the ridge line portion of the mountain 2) in the far-eye image for the left eye with the left eye is indicated by the arrow E _D The direction of the line of sight is fixed in the direction of the arrow F _D , and the angle of convergence θ _D must be kept constant, with the right eye looking at a specific point in the corresponding far-eye image for the right eye. There is. However, when the liquid crystal display 21 is moved back and forth, the line-of-sight direction changes (see FIG. 5), the apparent screen G (see FIG. 6) also moves far or near, and the size of the apparent screen G also changes. Therefore, the apparent position of the specific point in the distant view image moves in the left-right direction, and it is necessary to perform a shift process for canceling such movement.

Specifically, in FIG. 7, when the apparent screen G is at the reference position (virtual distance d = d ₁ ), the mountain 2A in the left-eye distant view image is on the extension line in the direction of the arrow E _D. If the apparent screen G moves to a position farther than the reference position (d> d ₁ ) without performing any shift processing, the position on the left side of the extension line in the direction of the arrow E _D as shown in the figure. Since the mountain 2B in the far-eye image for the left eye is visible, it is necessary to bring the mountain 2B on the extended line in the direction of the arrow E _D as shown by the mountain 2C indicated by the dotted line in the figure. A process for shifting the far-field image in the crossing direction (to the right) is performed. On the other hand, when the apparent screen G moves to a position closer to the reference position (d <d ₁ ) without performing any shift processing, a position on the right side of the extension line in the direction of the arrow E _D as shown in the figure. Since the mountain 2D in the far-eye image for the left eye can be seen on the left eye, it is necessary to bring the mountain 2D on the extended line in the direction of the arrow E _D like the mountain 2E indicated by the dotted line in the figure. Processing for shifting the far-field image in the same direction (left direction) is performed.

Further, the relationship between the right eye and the far-eye image for the right eye is similar if the relationship between the left-eye and the far-eye image for the left eye is reversed in the left-right direction, and the apparent screen G becomes the reference position (virtual distance). In the case of d = d ₁ ), if the mountain 2F in the far-eye image for the right eye is on the extension line in the direction of the arrow F _D , the apparent screen G at the far position (d> d ₁ ) The distant image for the right eye is shifted in the crossing direction (left direction) so as to move the mountain 2G to the mountain 2H indicated by the dotted line in the figure, while the apparent screen at the near position (d <d ₁ ) In G, processing for shifting the far-eye image for the right eye in the same direction (right direction) is performed so that the mountain 2J is moved to the mountain 2K indicated by the dotted line in the drawing.

  In FIG. 7, the mountain 2D, the mountain 2A, and the mountain 2B in the left-eye distant view image are described on a straight line, but actually, the position where the mountain can be seen on the apparent screen G is Since it is determined by the relationship between the point TZ on the physical screen in FIG. 6 and the point Td on the apparent screen G, strictly speaking, it does not line up on a straight line. As it goes, it becomes visible at a position farther from the center, and the mountain 2D, the mountain 2A, and the mountain 2B are described on a curve that curves in the upper left direction in the drawing. The same applies to the mountain 2J, mountain 2F, and mountain 2G in the right-eye distant view image, which are described on a straight line in FIG. 7, but strictly speaking, a curve that curves toward the upper right in the figure. Will be described above.

If the above-mentioned shift process of the distant view image is considered on the physical screen of the liquid crystal display 21, it can be explained as shown in FIG. That is, in FIG. 8, when it is desired to always reproduce a distant view image such as the background mountain 2 (see FIG. 1) from the position of the left and right eyes to an apparent distance D (for example, D = 100 m), the arrow When intersecting the position of and how extension line (two-dot chain line) in the direction of the direction of the arrow F _D of E _D is assumed to be at a distance D from the position of the right and left eyes, gaze direction of the left and right eyes Needs to be fixed in the directions of arrows E _D and F _D , respectively. Accordingly, the light of the distant view image emitted from the screen of the liquid crystal display 21 and incident on the back surface of the fourth lens 22D constituting the telecentric optical system 22 must always come from a certain direction. The specific point in the image must be located on the optical path K1 on the physical screen of the liquid crystal display 21, and the specific point in the far-eye image for the right eye must be located on the optical path K2.

Therefore, when the liquid crystal display 21 is at the reference position (equivalent to virtual distance d = d ₁ : for example, virtual distance 50 cm equivalent = 2.0D), the specific point in the far-eye image for the left eye is the position of the PA point (FIG. 7). If the liquid crystal display 21 is far from the reference position (corresponding to d> d ₁ ), the specific point is the PB point (corresponding to the mountain 2B in FIG. 7). The left-eye distant view image is shifted in the crossing direction (right direction) so as to move to the PC point (corresponding to the mountain 2C in FIG. 7), while the liquid crystal display 21 is closer to the reference position (d < when in the d ₁ equivalent), as specified point moves from the PD point (corresponding to the mountain 2D of FIG. 7) to the PE point (corresponding to the mountain 2E of FIG. 7), the distant view image for the left eye ipsilateral direction ( Shift left).

The same applies to the far-eye image for the right eye. When the liquid crystal display 21 is at the reference position (corresponding to the virtual distance d = d ₁ ), the specific point in the far-eye image for the right eye is the position of the PF point (see FIG. If the liquid crystal display 21 is located farther than the reference position (corresponding to d> d ₁ ), the specific point corresponds to the PG point (corresponding to the mountain 2G in FIG. 7). ) To the PH point (corresponding to the mountain 2H in FIG. 7), the right-eye distant view image is shifted in the crossing direction (left direction), while the liquid crystal display 21 is closer to the reference position (d <when in d ₁ equivalent), as the specific point to move to the PJ point (PK point from the corresponding) to the mountain 2J 7 (corresponding to the mountain 2K of FIG. 7), the lateral right-eye distant view image Shift (to the right).

FIG. 9 shows a method for calculating the shift amount of the distant view image by the distant view image display processing means 51B. In FIG. 9, the distance from the position of the left and right eyes to the position where the distant view image is desired to be reproduced is D, the distance (virtual distance) from the position of the left and right eyes to the apparent screen G (see FIG. 6) is d, and the pupil Let L be the half length of the interval, and let s be the apparent shift amount (shift amount from the center) of the distant view image to be obtained. At this time, the convergence angle θ _D when it is desired to correctly display the distant view image at the position of the distance _D is obtained by the following equation (1).

θ _D = tan ⁻¹ (L / D) (1)

Further, the convergence angle θ _d generated by disposing the liquid crystal display 21 at a position corresponding to the virtual distance d (see a gazing point in the foreground image displayed at the center position on the apparent screen G at the virtual distance d). The angle of convergence that occurs at this time is obtained by the following equation (2).

θ _d = tan ⁻¹ (L / d) (2)

Therefore, the shift angle Δθ necessary for always displaying the distant view image at the convergence angle θ _D regardless of the position of the liquid crystal display 21, that is, regardless of the virtual distance d to the apparent screen G, is expressed by the following equation (3). It is obtained by

Δθ = θ _d −θ _D = tan ⁻¹ (L / d) −tan ⁻¹ (L / D) (3)

Usually, since the convergence angle θ _d and the shift angle Δθ are very small, the apparent shift amount s can be obtained by the following equation (4).

s≈d × tan (Δθ) = d × tan {tan ⁻¹ (L / d) −tan ⁻¹ (L / D)}
(4)

Here, the virtual distance d to the apparent screen G formed through the telecentric optical system 22 is proportional to the size of the apparent screen G. This means that the apparent pixel size is proportional to the virtual distance d, considering that the number of pixels constituting one screen is constant. Therefore, in the case of an optical system and a display device in which the horizontal width of the apparent screen G size is known to be w when displayed at a certain virtual distance d ₁ , where x is the number of pixels in the horizontal direction, pixel size w / x, and the apparent in any virtual distance d pixel size p _x is obtained by the following equation (5).

p _x = (w × d) / (x × d ₁ ) (5)

Therefore, the number of pixels must be shifted Δx is divided by the pixel size p _x apparent the apparent shift amount s, calculated by the following equation (6).

Δx = s / p _x
≈ {(x × d ₁ ) / w} × tan {tan ⁻¹ (L / d) −tan ⁻¹ (L / D)}
... (6)

For example, when the distant view image is set to D = 100 m away, the shift amount of the distant view image with respect to the foreground image (the center of the screen) is as shown in FIG. In the calculation, w = 15 inches × (4/5) × 2.54 = 30.48 cm, d ₁ = 50 cm, L = 65/2 mm = 3.25 cm, and x = 1024 pixels were used. In FIG. 10, the horizontal axis is the distance (virtual distance d) to the reproduction position of the gazing point (for example, the body part of the butterfly 1) in the foreground image, and the vertical axis is a pixel that shifts the distant view image from the center. The number Δx (in pixels).

  According to this embodiment, there are the following effects. That is, the stereoscopic video presenting apparatus 10 moves the liquid crystal display 21 back and forth according to the change in the depth direction of the reproduction position of the gazing point in the foreground image by the control unit 71 in synchronization with the display processing by the foreground image display processing unit 51A. Therefore, the adjustment of the observer's crystalline lens works following the moving liquid crystal display 21, and dynamic optical correction of the adjustment distance can be realized.

  Then, the foreground image display processing means 51A has a state in which the gazing point in the left-eye foreground image and the corresponding gazing point in the right-eye foreground image overlap at the horizontal center position on the screen of the liquid crystal display 21. Thus, since the processing for displaying the left-eye foreground image and the right-eye foreground image is performed, the control of the reproduction position (apparent position) of the gazing point in the foreground image by the control means 71 is performed in the foreground image. This can be realized by matching the reproduction position of the viewpoint with the position of the liquid crystal display 21 (the position of the apparent screen G). Accordingly, since the convergence works on the position of the image display surface of the liquid crystal display 21, both the convergence and the adjustment work on the position of the image display surface of the liquid crystal display 21, and the convergence distance and the adjustment distance always coincide with each other during the observation. Can be made. Therefore, compared to the conventional method of controlling the reproduction position of the gazing point by changing the amount of parallax between the image for the left eye and the image for the right eye, it suppresses eye strain based on visual system mismatch. Can do.

  In addition, since the control of the reproduction position of the gazing point in the foreground image is performed with the movement of the liquid crystal display 21, the method of performing optical correction using the single focus lens described in Patent Document 1 described above. Compared to the above, the correction range is wide, and it is possible to cope with various stereoscopic image reproduction positions.

  Furthermore, since the telecentric optical system 22 is disposed between the observer and the liquid crystal display 21, the viewing angle (view angle) can be kept constant or substantially constant even when the liquid crystal display 21 moves back and forth. Therefore, optical correction without a zoom mechanism can be realized.

  Then, the stereoscopic image presenting apparatus 10 causes the far-view image display processing unit 51B to convert the far-eye image for the left eye and the far-view image for the right eye in the crossing direction or the ipsilateral direction as the liquid crystal display 21 moves forward or backward, respectively. Since the shift processing is performed, the parallax change caused by the movement of the liquid crystal display 21 can be canceled, and the distant view image can be kept at a constant depth distance.

  When the user selects, the foreground image display processing means 51A reduces or enlarges the left-eye foreground image and the right-eye foreground image as the liquid crystal display 21 moves forward or backward, respectively. Since the processing is performed, when the reproduction position of the object including the gazing point in the foreground image (for example, butterfly 1) is moved forward or backward by the movement of the liquid crystal display 21, the object (for example, butterfly 1) is The viewing angle can be changed. Therefore, when the liquid crystal display 21 moves forward and moves away from the observer, the foreground image is reduced to reduce the viewing angle for the target (for example, butterfly 1 etc.), while the liquid crystal display 21 is moved backward. When approaching the observer, the foreground image is enlarged to increase the viewing angle of the object (for example, butterfly 1 etc.), so that the movement of the object (for example butterfly 1 etc.) looks the same as the state of natural vision Can be observed.

  Further, since the stereoscopic image presenting apparatus 10 includes the infrared optometer 80, the refractive value of the lens of the left eye and / or right eye of the observer who is observing the stereoscopic image (that is, the focus adjustment of the human being observed). Is measured in real time, and the result of the measurement is displayed by the foreground image display processing means 51A, the distant view image display processing means 51B by the distant view image display process, or the control means 71 for moving the liquid crystal display 21. It is possible to feed back to the operation control process of the stepping motor 23 according to the above. For this reason, it is possible to present an appropriate stereoscopic image in accordance with the actual observation state of the observer.

  Since the stereoscopic video presenting apparatus 10 includes the reproduction information storage unit 62, various information necessary for reproducing the foreground image including the sequence of the movement of the foreground image (including information on the reproduction position and the reproduction speed), Alternatively, information on the reproduction position of the distant view image can be freely set and stored. For this reason, the playback position and playback speed of the foreground image can be freely controlled, or the playback position of the distant view image can be set freely, and various stereoscopic images can be presented.

  In addition, since the stereoscopic image presentation apparatus 10 includes the user information storage unit 63, personal information such as an observer's refraction value and pupil interval can be stored, and individual differences can be accommodated.

  Further, the stereoscopic video presenting apparatus 10 can control the reproduction position of the foreground image with a diopter (D: reciprocal of meter distance) that is a unit of adjustment distance, and can also perform optical correction linearly in units of diopter.

  In order to confirm the effect of the present invention, the infrared optometer 80 is used when a stereoscopic image is observed by a conventional method and when a stereoscopic image is observed using the stereoscopic image presentation device 10 of the present invention. A comparative experiment was conducted to measure the change in the refractive value of the observer's crystalline lens when the reproduction position of the gazing point in the foreground image was changed. FIG. 12 shows a measurement result in the case of conventional stereoscopic image observation without optical correction. In this case, the position of the liquid crystal display is fixed, and the reproduction position of the gazing point in the foreground image is controlled by shifting the right and left images and changing the parallax amount. On the other hand, FIG. 13 shows a measurement result in the case of observation by the stereoscopic image presenting apparatus 10 of the present invention that has been optically corrected. In this case, the position of the liquid crystal display 21 is moved back and forth, and the left and right images are fixed without shifting. In both FIG. 12 and FIG. 13, the horizontal axis is time (second unit), and the vertical axis is the measured refraction value (diopter unit) of the crystalline lens for the white circle point, and for the black square point, This is the reproduction position (in diopter units) of the gazing point in the set foreground image.

  According to FIG. 12, in the conventional method, the measured refraction value of the crystalline lens (white dot) does not match the reproduction position of the gazing point (black square point) in the foreground image. 13, in the stereoscopic image presenting apparatus 10 of the present invention, the measured refraction value (white dot) of the crystalline lens coincides with the reproduction position of the gazing point (black square point) in the foreground image, and the adjustment distance is adjusted. And the convergence distance agree with each other, and the effect of the present invention is remarkably shown.

  Note that the present invention is not limited to the above-described embodiment, and modifications and the like within a scope where the object of the present invention can be achieved are included in the present invention.

  That is, in the above-described embodiment, the left and right image separation method using the micropole 21B and the polarization filters 25 and 26 is adopted. However, the separation method applied to the stereoscopic image presenting device of the present invention is limited to this. For example, alternate display processing of the left-eye image and the right-eye image on the display, and a separation method using liquid crystal shutter glasses that switches between light transmission / light-shielding between the left eye and the right eye in synchronization therewith, etc. But you can.

  Moreover, in the said embodiment, although the liquid crystal display 21 was used, the display applied to the stereo image presentation apparatus of this invention is not limited to this, For example, a CRT display etc. may be sufficient.

  Furthermore, in the said embodiment, although the telecentric optical system 22 comprised by the 1st, 2nd, 3rd, 4th lens 22A, 22B, 22C, 22D was used, it applies to the stereo image presentation apparatus of this invention. The telecentric optical system is not limited to this. In short, the viewing angle (viewing angle) is constant or substantially constant while changing the line-of-sight direction (direction for viewing the center of the screen) with respect to the back and forth movement of the display. Any optical system can be used as long as it can be maintained.

  As described above, the stereoscopic video presenting device of the present invention is suitable for use when, for example, a stereoscopic video is presented using a foreground image including a gazing point (target) and a background image as a background thereof. ing.

1 is an overall configuration diagram of a stereoscopic video presenting apparatus according to an embodiment of the present invention. The longitudinal cross-sectional view of the apparatus main body of the said embodiment. The figure explaining the structure of the three-dimensional image presentation apparatus of the said embodiment with the flow of a signal and light. Explanatory drawing of the structure of the liquid crystal display which mounted the micropole of the said embodiment. Explanatory drawing of the optical path formed with the telecentric optical system of the said embodiment. Explanatory drawing of the relationship between the physical screen of the liquid crystal display of the said embodiment, and the apparent screen through a telecentric optical system. Explanatory drawing of the display process of a distant view image by the distant view image display process means of the said embodiment. Another explanatory view of the distant view image display processing by the distant view image display processing means of the embodiment. Explanatory drawing of the calculation method of the shift amount of a distant view image by the distant view image display process means of the said embodiment. The figure which shows the calculation result of the shift amount of a distant view image by the distant view image display process means of the said embodiment. Explanatory drawing of the measuring method of the refractive value of the crystalline lens of the said embodiment. The figure which shows the comparative experiment result (in the case of the conventional method) which measured the refractive value of the crystalline lens. The figure which shows the comparative experiment result (in the case of the method of this invention) which measured the refractive value of the crystalline lens. Explanatory drawing of the mismatch of the visual system during stereoscopic image observation by the conventional method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Stereoscopic image presentation apparatus 21 Liquid crystal display 22 Telecentric optical system 23 Stepping motor which is a drive means 51 Image display processing means 51A Foreground image display processing means 51B Distant view image display processing means 71 Control means 80 Infrared optometer which is a crystalline refraction value measurement means

Claims (5)

A stereoscopic image presentation device for presenting a stereoscopic image to an observer,
A display on which a left eye image and a right eye image are displayed on the screen;
Image display processing means for performing processing for displaying the left-eye image and the right-eye image on a screen of the display;
A telecentric optical system disposed between the observer and the display;
Driving means for moving the display in the direction of approaching and separating from the telecentric optical system;
By sending a control signal for controlling the operation of the driving means in synchronization with the display processing of the left-eye image and the right-eye image by the image display processing means, the left-eye image And a control means for moving the display in accordance with a change in the depth direction of the position at which the point of interest set as the corresponding point is reproduced in the image for right and in the right-eye image. . The stereoscopic image presentation device according to claim 1,
The image display processing means is configured such that the gazing point in the left-eye image and the corresponding gazing point in the right-eye image overlap with each other at a horizontal center position on the display screen. A stereoscopic video presenting apparatus characterized in that the processing for displaying the left-eye image and the right-eye image is performed. The stereoscopic image presentation device according to claim 2,
The image display processing means includes a foreground image display processing means for performing processing for displaying a left-eye foreground image and a right-eye foreground image that constitute the foreground image including the gazing point on the display screen, and the display A distant view image display processing means for performing processing for displaying a distant view image for the left eye and a distant view image for the right eye constituting a distant image as a background located farther than the gazing point on the screen,
The control means is configured to move the display according to a change in a depth direction of a position for reproducing the gazing point set in the foreground image by sending the control signal to the driving means.
The foreground image display processing means overlaps the gazing point in the left-eye foreground image and the corresponding gazing point in the right-eye foreground image at the center position in the left-right direction on the screen of the display. In the state, it is configured to perform processing for displaying these left-eye foreground image and right-eye foreground image,
The distant view image display processing means is configured to perform processing for shifting the distant view image for the left eye and the distant view image for the right eye in the crossing direction or the ipsilateral direction as the display moves forward or backward, respectively. 3D image display device characterized by that. The stereoscopic image presentation device according to claim 3,
The foreground image display processing means is configured to perform processing for reducing or enlarging the left-eye foreground image and the right-eye foreground image, respectively, as the display moves forward or backward. 3D image presentation device. The stereoscopic image presentation device according to claim 3 or 4,
A lens refraction value measuring means for measuring a refraction value of a lens of the left eye and / or right eye of the observer;
The measurement result by the lens refraction value measuring means is performed to move the display of the foreground image by the foreground image display processing means, the display processing of the distant view image by the distant view image display processing means, or the display. A stereoscopic video presenting apparatus characterized by being fed back to at least one of the operation control processes of the driving means by the control means.

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