JP3579585B2 - Multi-view simultaneous observation type horizontally arranged stereoscopic image display system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stereoscopic image display system that captures a binocular parallax image with a plurality of cameras and displays an image with a three-dimensional effect. The present invention relates to a multi-viewpoint simultaneous observation type horizontally arranged three-dimensional image display system capable of viewing an appropriate three-dimensional image from any direction regardless of a position.
[0002]
[Prior art]
An image corresponding to each of the right and left eyes of a human is taken by two cameras arranged in parallel at a distance of about two human eyes, and the images are alternately displayed on an image display device and synchronized therewith. There is a time-division stereoscopic image display system that displays a stereoscopic image by showing only the images corresponding to the left and right eyes by blocking the right or left eye with a liquid crystal shutter attached to the glasses.
[0003]
Since such a time-division stereoscopic image display system is designed on the assumption that the display surface is placed upright, the positional relationship where the user views the screen up and the right side of the screen as right is always maintained correctly. I was dripping.
[0004]
[Problems to be solved by the invention]
However, for the purpose of observing the object placed on the horizontal plane in a natural positional relationship, or for the purpose of simultaneously observing the display image by multiple persons at a meeting or the like, the image display surface of such a time-division stereoscopic image display system is set on a table. When used by embedding in a horizontal plane such as the above, the user may see the top of the screen as a direction other than the top. For example, when viewed from the direction in which the right side of the screen is downward (the direction in which the left side of the screen is upper, the lower side is left, and the upper side is right), a binocular parallax stereoscopic image taken from a position shifted in the left-right direction Is displayed as an image with a vertical shift, and even if viewed with both eyes, stereoscopic viewing is not possible.
[0005]
As described above, in the conventional time-division stereoscopic image display system using two cameras, when the image display surface is placed horizontally, there is a problem that a stereoscopic image cannot be displayed correctly depending on a user's observation position. .
[0006]
The present invention solves the above problems, and in a stereoscopic image display system having a horizontally installed image display surface, a plurality of users can view an appropriate stereoscopic image from any direction regardless of an observation position. The purpose is to be able to.
[0007]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an apparatus for displaying a stereoscopic image based on binocular parallax images on a horizontally installed image display surface, in which three or more video cameras are arranged, and each of a plurality of video cameras In accordance with the change in position, the user controls the transmission and blocking of the left and right eyes of the liquid crystal glasses worn by each user so that the left eye image and the right eye image can be selectively viewed, respectively. It is characterized in that an appropriate stereoscopic image can be observed irrespective of the number and the observation position.
[0008]
That is, the multi-viewpoint simultaneous observation type horizontally arranged stereoscopic image display system of the present invention comprises three or more video cameras arranged at positions where the optical axis directions are parallel, a position sensor for measuring the positions of a plurality of users, An image selection device that selects and alternately outputs one of the output image signals of the video camera, an image display device that displays the image output by the image selection device, and user viewpoint position information measured by the position sensor. When an image to be viewed by the user's left eye for stereoscopic viewing is displayed on the image display device, the left eye of the liquid crystal glasses is made transparent and the right eye is shielded, and the image to be viewed by the user's right eye is displayed by the image display. A liquid crystal glasses synchronizing signal generator that generates a liquid crystal glasses synchronizing signal so that the right eye of the liquid crystal glasses is in a transparent state and the left eye is in a closed state when displayed on the device; Those constituted by a liquid crystal glasses that shields the left eye or right eye view of the user in accordance with the liquid crystal eyeglasses sync signals.
[0009]
For example, four video cameras are arranged at each vertex of a quadrangle. Alternatively, a camera in which three or five or more video cameras are evenly arranged on the same plane may be used to obtain binocular parallax images in a plurality of directions.
[0010]
The operation of the present invention when four video cameras are used is as follows.
The four video cameras shoot images with parallax in the upper, lower, left and right directions. For example, when observing with the lower side of the screen facing down, the left eye observes the image of the lower left camera and the lower right camera. If the right eye observes the image, the parallax images of the left and right eyes can be observed, and stereoscopic viewing can be performed. In addition, when observing with the upper side of the screen down, the left eye observes the image of the lower right or upper right camera, and the right eye observes the image of the lower left or upper left camera. A parallax image can be observed and a stereoscopic view can be obtained. When observing the screen obliquely, for example, when observing the lower right of the screen as the bottom and the upper left as the upper, if the image of the lower left camera is observed by the left eye and the image of the upper right camera is observed by the right eye, the left and right A parallax image of both eyes can be observed and a stereoscopic view can be obtained.
[0011]
In the present invention, the image selection device sequentially selects the images captured by the four cameras, and the image display device displays the images. The liquid crystal glasses synchronization signal transmitter determines the image to be observed by the left eye and the right eye based on the user's position information measured by the position sensor, using the direction from the position toward the center of the image display device as the observation direction. Then, the liquid crystal shutter of the left eye is set to the transparent state in synchronization with the image to be observed by the left eye is selectively displayed, and the liquid crystal shutter of the right eye is synchronized with the selection of the image to be observed by the right eye. In the transmission state, and in other cases, the liquid crystal shutter is closed, so that each eye observes only the image to be observed by the left eye and the right eye.
[0012]
In this way, the images captured by the four cameras are displayed in order, and the shielding state of the liquid crystal glasses is changed according to the position of the user, so that the user can obtain a binocular parallax stereoscopic image having correct parallax in any direction. Can be observed.
[0013]
In addition, even when multiple users observe the image display device at the same time, by controlling the shielding state of the LCD glasses individually for each user without changing the display image, the correct parallax can be obtained from any direction. Binocular parallax stereoscopic image having the following can be observed.
[0014]
Furthermore, if the position of the user is measured by the position sensor and an image necessary only for stereoscopic viewing from a direction where the user does not exist is not selected, the image update interval can be shortened.
[0015]
Even when the number of video cameras is other than four, the user can arrange the video cameras evenly on the circumference and select the most appropriate combination for obtaining binocular parallax images from each direction. A binocular parallax stereoscopic image having correct parallax can be observed from any direction.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 shows an example of an image photographing unit of the multi-viewpoint simultaneous observation type horizontally arranged stereoscopic image display system of the present invention. In the figure, reference numeral 10 denotes a square camera fixing frame for fixing four video cameras, 11 denotes a first video camera, 12 denotes a second video camera, 13 denotes a third video camera, and 14 denotes a fourth video camera. It is. Reference numeral 15 denotes a subject placed under the image capturing device. Reference numeral 16 denotes an arrow indicating the upper part of the camera, that is, the upper part of the image.
[0017]
The four video cameras 11, 12, 13, and 14 are installed so that the optical axes are parallel, the top of each camera is in the direction of the arrow 16, and each camera is in contact with the apex of the square of the camera fixing frame 10.
[0018]
FIG. 2 is a usage state diagram illustrating an image display unit of the present system, a device associated therewith, a user, and liquid crystal glasses worn by the user. FIG. 3 is an enlarged view of the user's head in FIG.
[0019]
In the figure, 21 is an image display device such as a CRT display for displaying an image, 22 is an image display surface of the image display device 21, 23 is a transmitter of a position sensor for measuring the position of the user, and 24 is a liquid crystal worn by the user. It is a liquid crystal glasses synchronization signal transmitter for controlling the glasses. Reference numeral 25 denotes a first user, 26 denotes first liquid crystal glasses worn by the first user 25, and shields the left eye, right eye, or both eyes according to the liquid crystal glasses synchronization signal, and 27 denotes a position sensor for measuring the position of the user. Is a liquid crystal glasses synchronization signal receiver for receiving the liquid crystal glasses synchronization signal. Reference numeral 29 denotes an arrow indicating the upper part of the display image, that is, the upper part when the photographed image is displayed. Further, reference numeral 30 denotes a second user, and 31 denotes second liquid crystal glasses worn by the second user 30 and blocking the left eye, the right eye, or both eyes according to the liquid crystal glasses synchronization signal.
[0020]
In FIG. 2, the first user 25 observes the display surface 22 from the upper side of the screen. In this case, the top of the screen is observed as the lower side of the field of view. The second user 30 is observing the display surface 22 from the left side of the screen. In this case, the left side of the screen is observed as the lower side of the visual field.
[0021]
FIG. 4 is a configuration diagram showing the overall configuration of the multi-viewpoint simultaneous observation type horizontally arranged stereoscopic image display system of the present invention. In the drawing, those having the same reference numerals as those in FIGS. 1 and 2 correspond to those shown in FIGS. 1 and 2. Reference numeral 41 denotes an image selection device that sequentially selects and outputs images captured by the four video cameras 11 to 14 for each video frame. Reference numeral 42 denotes a display image signal output from the image selection device 41, and reference numeral 43 denotes a control signal output from the image selection device 41. The image display device 21 displays the display image signal 42.
[0022]
Reference numeral 44 denotes a position sensor for simultaneously measuring the positions of a plurality of users, and reference numeral 45 denotes user viewpoint position information output by the position sensor 44 and indicating the observation viewpoint position of the user. Reference numeral 46 denotes a liquid crystal glasses synchronization signal transmitted by the liquid crystal glasses synchronization signal transmitter 24. The liquid crystal glasses synchronization signal transmitter 24 selects and displays an image for the left eye or an image for the right eye according to the user's observation viewpoint position based on the control signal 43 output from the image selection device 41 and the user viewpoint position information 45. In synchronism with the liquid crystal glasses, a liquid crystal glasses synchronization signal 46 for transmitting the left or right eye of the liquid crystal glasses worn by the user and blocking the opposite eye is transmitted.
[0023]
A liquid crystal glasses synchronization signal receiver 28 and a liquid crystal glasses synchronization signal receiver 32 are attached to the first liquid crystal glasses 26 and the second liquid crystal glasses 31, respectively.
Next, the operation of the present system will be described with reference to FIGS.
[0024]
FIG. 5 is a diagram that defines the observation line-of-sight direction of the user based on the orientation of the image display device 21, and is a diagram of the image display device 21 as viewed from above.
The image display device 21 displays an image such that the upper side of the camera, that is, the upper side of the image indicated by the arrow 16 indicating the upper side of the image is in the direction of the arrow 29 indicating the upper side of the display image.
[0025]
Reference numeral 51 denotes a line-of-sight direction 1. The line-of-sight direction 1 is a direction directly facing the screen and is a viewing direction of a general stereoscopic image. Reference numeral 52 denotes a line-of-sight direction toward the center of the image display device 21 in a direction inclined 45 degrees from the line-of-sight direction 1, which is referred to as line-of-sight direction 2. 53, 54, 55, 56, 57, and 58 are similarly rotated 90 degrees, 135 degrees, 180 degrees, 225 degrees, 270 degrees, and 315 degrees from the line-of-sight direction 1, respectively, at the center of the image display device 21. These are referred to as a viewing direction, a viewing direction 3, a viewing direction 4, a viewing direction 5, a viewing direction 6, a viewing direction 7, and a viewing direction 8, respectively. The first user 25 shown in FIG. 2 is observing the display image from the line-of-sight direction 5. In addition, the second user 30 shown in FIG. 2 is observing the display image from the viewing direction 7.
[0026]
FIG. 6 is a diagram illustrating a display image sequence in which the image selection device 41 selects an image and displays the image on the image display device 21. The horizontal axis in the figure is time.
In the period T1, the image 1, that is, the image captured by the first video camera 11, is displayed, in the period T2, the image 2, that is, the image captured by the second video camera 12, is displayed, and in the period T3, the image 3, that is, the third video camera is displayed. The image taken by the video camera 13 is displayed, and in the period T4, the image 4, that is, the image taken by the fourth video camera 14 is displayed. The lengths of the periods indicated by T1, T2, T3, and T4 are all equal, and are times for displaying one screen of video. In the present embodiment, the display image sequence is always selected and displayed in a fixed order regardless of the position of the user.
[0027]
FIG. 7 is a diagram illustrating a line-of-sight direction in which the user observes the image display device 21 and states of the left and right eyes of the liquid crystal glasses in each of the periods T1, T2, T3, and T4 of the display image sequence. In the figure, “left” indicates that the left-eye liquid crystal shutter is in the transmissive state and the right-eye liquid crystal shutter is in the blocking state, and “right” indicates that the right-eye liquid crystal shutter is in the transmitting state and the left-eye liquid crystal shutter is in the blocking state. Indicates that “Closed” indicates that both eyes are in a shielded state. For the viewing direction 5 and the viewing direction 7, the state of the liquid crystal shutter may be indicated in parentheses.
[0028]
A method for determining the transmission / shielding state of the liquid crystal glasses will be described with reference to an example.
<Example 1: Line of sight direction 1>
A case where the user observes the image display device 21 from the line-of-sight direction 1 will be described. In the photographing apparatus shown in FIG. 1, the second video camera 12 is located to the right of the first video camera 11, so that the image 1 taken by the first video camera 11 is moved by the left eye to the second video camera 12 If the image 2 photographed by the camera is observed by the right eye, the binocular parallax having the parallax of the interval between the first video camera 11 and the second video camera 12 is displayed, and the user can perform stereoscopic vision. It can be performed. For this purpose, the liquid crystal shutter of the left eye is set to the transparent state during the period T1 during which the image 1 is displayed, and the liquid crystal shutter of the right eye is set to the transparent state during the period T2 during which the image 2 is displayed, so that the images 3 and 4 are displayed. During the periods T3 and T4, both eyes may be in the shielded state.
[0029]
<Example 2: Line of sight direction 5>
A case where the user observes the image display device 21 from the line-of-sight direction 5 will be described. This is the direction in which the first user 25 is observing the display image in FIG. Regardless of which direction the user observes the image display device 21, the image is displayed such that the direction of the arrow 16 indicating the top of the image is the same as the direction of the arrow 29 indicating the top of the display image.
[0030]
The line of sight direction 5 is a direction in which observation is performed from a direction above the image display device 21, so that the user views the display image upside down. That is, the user observes the image with the direction of the arrow 29 indicating the upper side of the display image being below the field of view. In FIG. 1, when four cameras are viewed from a direction in which the top of the image is below the field of view, that is, the direction opposite to the direction of the arrow 16 indicating the top of the image, a third video camera 14 is located on the right of the fourth video camera 14. Since the video camera 13 is located, the image 4 captured by the fourth video camera 14 can be observed by the left eye and the image 3 captured by the third video camera 13 can be observed by the right eye. A binocular parallax image having a parallax at an interval between the video camera 14 and the third video camera 13 is displayed, and the user can perform stereoscopic viewing. For this purpose, during the period T4 during which the image 4 is displayed, the liquid crystal shutter for the left eye is set to the transparent state, and during the period T3 when the image 3 is displayed, the liquid crystal shutter for the right eye is set to the transparent state. In the displayed periods T1 and T2, both eyes may be in the shielded state.
[0031]
<Example 3: Case of line of sight 7>
A case where the user observes the image display device 21 from the line-of-sight direction 7 will be described. This is the direction in which the second user 30 is observing the display image in FIG. Regardless of which direction the user observes the image display device 21, the image is displayed such that the direction of the arrow 16 indicating the top of the image is the same as the direction of the arrow 29 indicating the top of the display image.
[0032]
The viewing direction 7 is a direction in which the image is viewed from the left side of the image display device 21. Therefore, the user observes the image with the direction of the arrow 16 indicating the upper side of the image as the right side of the visual field. In FIG. 1, when four cameras are viewed in a direction in which the top of the image is to the left of the field of view, that is, the direction of arrow 16 indicating the top of the image is rotated clockwise by 90 degrees, the third video camera 13 Since the first video camera 11 is located on the right side, if the image 3 captured by the third video camera 13 is observed by the left eye and the image 1 captured by the first video camera 11 is observed by the right eye, A binocular parallax image having a parallax at an interval between the third video camera 13 and the first video camera 11 is displayed, and the user can perform stereoscopic viewing. For this purpose, the liquid crystal shutter of the left eye is made transparent in a period T3 in which the image 3 is displayed, and the liquid crystal shutter of the right eye is made transparent in the period T1 in which the image 1 is displayed. In the displayed periods T2 and T4, both eyes may be in the shielded state.
[0033]
<Example 4: Line of sight direction 2>
A case where the user observes the image display device 21 from the line-of-sight direction 2 will be described. Regardless of which direction the user observes the image display device 21, the image is displayed such that the direction of the arrow 16 indicating the top of the image is the same as the direction of the arrow 29 indicating the top of the display image.
[0034]
The line of sight direction 2 is a direction in which the image is viewed from the lower right direction of the image display device 21, so that the user observes the image with the direction of the arrow 16 indicating the upper side of the image as the upper right of the visual field. In FIG. 1, when four cameras are viewed from a direction in which the top of the image is in the upper right of the field of view, that is, the direction of the arrow 16 indicating the top of the image is rotated 45 degrees counterclockwise, the first video camera 11 Since the fourth video camera 14 is located to the right of the image 1, the image 1 captured by the first video camera 11 can be observed by the left eye, and the image 4 captured by the fourth video camera 14 can be observed by the right eye. , A binocular parallax image having a parallax between the first video camera 11 and the fourth video camera 14 is displayed, and the user can perform stereoscopic viewing. For this purpose, the liquid crystal shutter of the left eye is made transparent in the period T1 during which the image 1 is displayed, and the liquid crystal shutter of the right eye is made transparent in the period T4 during which the image 4 is displayed. In the displayed periods T2 and T3, both eyes may be in the shielded state.
[0035]
Similarly, when observed from the viewing direction 4, the viewing direction 6, the viewing direction 7, and the viewing direction 8 other than the above, similarly, as shown in the table of FIG. Stereoscopic viewing by parallax can be performed.
[0036]
In actual use, the user's line of sight does not always coincide with the line of sight directions 1 to 8, and the display image is determined using the closest line of sight approximately.
[0037]
As shown in FIG. 2, even when two users 25 and 30 observe one image display device 21 at the same time, images captured by four cameras are displayed according to the display image sequence shown in FIG. However, as shown in FIG. 7, if the transmission and blocking states of the liquid crystal shutters of the left and right eyes are individually controlled according to the position of the user, two users can observe the binocular parallax stereoscopic image at the same time.
[0038]
In this embodiment, the case where two users use the liquid crystal glasses has been described. However, even if the number of users increases, the display order of the images remains unchanged, and the left and right of the liquid crystal glasses worn by each user according to the position of each user. By controlling the transmissive / occluding state of the eyes, stereoscopic viewing with binocular parallax images can be performed from any direction.
[0039]
[Second embodiment]
This embodiment uses a user position-sensitive image selection device that skips and does not select an image that does not need to be displayed based on user viewpoint position information obtained by a position sensor that measures the positions of a plurality of users. It is an example.
[0040]
FIG. 8 is a configuration diagram showing the overall configuration of the system according to the second embodiment. In the figure, reference numeral 81 denotes user viewpoint position information, which is measured by the position sensor 44 and input to the user position-sensitive image selection device 82. The difference from the system shown in FIG. 4 is that the image selection device is a user position-sensitive device, and that the user viewpoint position information 81 is input to the user position-sensitive image selection device 82.
[0041]
FIG. 9 is a diagram illustrating an example of a display image sequence by the user position-sensitive image selection device 82. The user position-sensitive image selection device 82 can increase the frame rate of image display by using the user viewpoint position information 81 output from the position sensor 44 to prevent unnecessary images from being displayed. The example shown in FIG. 9 is a case where the user exists only in the line-of-sight direction 1, the line-of-sight direction 2 and the line-of-sight direction 3 and does not exist in other areas. In this case, referring to the table of FIG. In the displayed period T3, since the liquid crystal shutters are in the "closed" state in all three viewing directions, the image 3 does not need to be displayed. Therefore, as shown in FIG. 9, the display of the image 3 can be omitted, and the update interval of the image viewed by each user can be shortened.
[0042]
[Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described.
FIG. 10 is a diagram showing an arrangement of cameras and a viewing line of sight of a user according to the third embodiment of the present invention.
[0043]
In the third embodiment, six cameras are arranged at equal intervals on the same circumference. In FIG. 10, reference numeral 17 denotes an arrow on the camera, that is, on the image, and reference numeral 18 denotes a camera fixing frame for fixing the camera. 101 is a first video camera, 102 is a second video camera, 103 is a third video camera, 104 is a fourth video camera, 105 is a fifth video camera, and 106 is a sixth video camera.
[0044]
Reference numerals 111, 112, 113, 114, 115, and 116 denote viewing directions when the user observes an image displayed on the image display device 21. Even when the number of cameras is six, as in the first and second embodiments, the left-eye image and the right-eye image are selected and displayed from the images captured by the plurality of cameras, so that the binocular disparity is obtained. Can perform stereoscopic vision.
[0045]
An example of a method of selecting an image by controlling the transmission / shielding state of the liquid crystal glasses will be described with reference to an example.
For example, when observing an image from the line-of-sight direction 1 (111), the image is displayed such that the image captured by the sixth video camera 106 is viewed by the left eye and the image captured by the second video camera 102 is viewed by the right eye. Synchronously controls the transmission / shielding state of the liquid crystal glasses. Thus, for the same reason as described in the first embodiment, the second video camera 102 is located to the right of the sixth video camera 106 when viewed from the viewing direction 1. If the liquid crystal shutter is controlled so that these enter the left eye and the right eye, respectively, a binocular parallax image having an interval between the sixth video camera 106 and the second video camera 102 can be seen, and the user can view the stereoscopic image. It can be performed.
[0046]
As in the case of the first embodiment, in the case of actual use, the user's line of sight does not always coincide with the line of sight 1 to 6, so the nearest line of sight is used approximately. Determine the image.
[0047]
【The invention's effect】
As described above, according to the present invention, even when the display surface of the time-division stereoscopic image display device is placed horizontally, the user can sequentially display images captured by a plurality of video cameras according to the user's observation position, By setting each of the eyes of the liquid crystal glasses to be in a transmissive / shielded state according to the user's observation position, a stereoscopic image having appropriate binocular parallax can be displayed.
[0048]
In addition, the present invention can control an appropriate binocular disparity from any user's viewpoint by individually controlling the liquid crystal glasses worn by each user while maintaining the display image sequence even when the number of users increases. There is an effect that a stereoscopic image having the same can be displayed.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of an image photographing unit of a multi-viewpoint simultaneous observation type horizontally arranged stereoscopic image display system of the present invention.
FIG. 2 is a usage state diagram illustrating an image display unit and associated devices thereof, a user, and liquid crystal glasses worn by the user in the multi-viewpoint simultaneous observation type horizontally arranged stereoscopic image display system of the present invention.
FIG. 3 is an enlarged view of the user's head of FIG. 2;
FIG. 4 is a configuration diagram showing an overall configuration of a system according to the first embodiment of the present invention.
FIG. 5 is a diagram that defines an observation line-of-sight direction of a user based on the orientation of the image display device.
FIG. 6 is a diagram showing a display image sequence displayed on the image display device.
FIG. 7 is a diagram illustrating a transmission / blocking state of liquid crystal shutters for left and right eyes corresponding to a display image sequence.
FIG. 8 is a configuration diagram showing an overall configuration of a system according to a second embodiment of the present invention.
FIG. 9 is a diagram illustrating an example of a sequence of a display image according to the second embodiment of the present invention.
FIG. 10 is a diagram showing an arrangement of cameras and a viewing line of sight of a user according to a third embodiment of the present invention.
[Explanation of symbols]
Reference Signs List 10 Camera fixed frame 11 First video camera 12 Second video camera 13 Third video camera 14 Fourth video camera 15 Subject 16 Arrow 21 indicating above camera, that is, above image 21 Image display device 22 Display surface 23 Position Sensor transmitter 24 Liquid crystal glasses synchronization signal transmitter 25 First user 26 First liquid crystal glasses 27 Position sensor receiver 28 Liquid crystal glasses synchronization signal receiver 29 Arrow 30 indicating the top of the displayed image 30 Second user 31 2 liquid crystal glasses 32 liquid crystal glasses synchronization signal receiver 41 image selection device 42 display image signal 43 control signal 44 position sensor 45 user viewpoint position information 46 liquid crystal glasses synchronization signal 81 user viewpoint position information 82 user position sensitive image selection device

Claims (3)

Optical axis direction Ri Do parallel, and a positive n-gon (n ≧ 3) of three or more video cameras of the n from first placed at the position of each vertex in the same plane,
A position sensor that measures the positions of multiple users,
An image selection device for sequentially selecting and outputting one of the output image signals of the first to n-th video cameras in a predetermined order at a certain time interval;
An image display device in which an image display surface for displaying an image output by the image selection device is horizontally arranged;
According to the user viewpoint position information measured by the position sensor , a direction from the user viewpoint position toward the center of the image display device is set as an observation direction, and the first to n-th to be observed by the left eye and the right eye of the user, respectively. The output image signals of the i-th (1 ≦ i ≦ n) and j-th (i ≠ j, 1 ≦ j ≦ n) video camera among the output image signals of the first video camera are determined, and the first to n-th video cameras are determined . In the output image signal of the video camera, the left eye of the liquid crystal glasses of the user is transmitted in synchronization with the output of the output image signal of the i-th video camera to be observed by the left eye of the user for binocular stereoscopic viewing. to the i-th of the shield state left eye liquid crystal glasses when the output image signal of the video camera is not outputted, the output image of the to be observed in the right eye of the user j-th video camera The right eye liquid crystal glasses of the user and the transmission state in synchronization with the output of No., the liquid crystal for each user to the right of liquid crystal glasses in blocking state when not in the output image signal of the video camera of the j-th output LCD glasses synchronization signal generator that generates glasses synchronization signal,
A multi-view simultaneous observation type horizontally arranged stereoscopic image display system including liquid crystal glasses for blocking the visual field of the left eye or the right eye of the user according to the liquid crystal glasses synchronization signal. First to n-th (n ≧ 3) three or more video cameras arranged at positions where the optical axis directions are parallel;
A position sensor that measures the positions of multiple users,
Based on the user's view point position information measured by the position sensor, among the pre-Symbol first output image signal of the video camera of the n, an output image signal of the video camera of the k (1 ≦ k ≦ n) both When there is no user who observes as a parallax image, a signal obtained by removing the output image signal of the k-th video camera from the output image signal of the first to n-th video cameras is sequentially replaced with a predetermined one at a certain time interval. An image selection device for selecting and outputting one in order ,
An image display device in which an image display surface for displaying an image output by the image selection device is horizontally arranged;
According to the user viewpoint position information measured by the position sensor, the ith (1 ≦ 1) of the output image signals of the first to n-th video cameras corresponding to the position of the left eye of the user for binocular stereoscopic viewing. i ≦ n), the left eye of the liquid crystal glasses of the user is set to the transparent state, the right eye is set to the shielding state, and the j-th (i 画像 j) corresponding to the position of the right eye of the user is synchronized with the output of the output image signal of the video camera. , 1 ≦ j ≦ n) in synchronization with the output of the output image signal of the video camera, the liquid crystal glasses synchronization signal for each user is generated so that the right eye of the liquid crystal glasses of the user is in a transmissive state and the left eye is in a shielded state. LCD glasses synchronization signal transmitter,
A multi-view simultaneous observation type horizontally arranged stereoscopic image display system including liquid crystal glasses for blocking the visual field of the left eye or the right eye of the user according to the liquid crystal glasses synchronization signal . The multi-viewpoint simultaneous observation type horizontally arranged stereoscopic image display system according to claim 1 or 2,
A multi-view simultaneous observation type horizontally arranged three-dimensional image display system, wherein the three or more video cameras are arranged at equal intervals on a circumference on the same plane.

Images