JP2004012626A - Stereoscopic video display device and stereoscopic video display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the stereoscopic video matched with the actual positions of the eyes of an appreciator displayable in real time. <P>SOLUTION: The display device has a detected value-capturing means 102 for capturing the detected values Dx, Dy and Dz from a position sensor or a position detecting section, a correction value-computing means 104 for determining the correction values ΔDx, ΔDy and ΔDz corresponding to the captured detected values Dx, dy and Dz in accordance with respective correction function tables TBLx, TBLy and TBLz, and a detected value-computing means 106 for determining the true detected values tDx, tDy and tDz by adding the correction values ΔDx, ΔDy and ΔDz to the captured detected values Dx, Dy and Dz. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a stereoscopic video display that allows a viewer to view a stereoscopic video by projecting a video for stereoscopic display, for example, a video having different parallaxes on the left and right eyes of the viewer, from a video projector. The present invention relates to an apparatus and a stereoscopic image display method.
[0002]
[Prior art]
When realizing stereoscopic vision using a video projection device, the video projection device can realize this by projecting a video for stereoscopic display, for example, a video having different parallaxes on the left and right eyes of a viewer on a screen. it can.
[0003]
This stereoscopic vision is considered promising in that, for example, the evaluation of the shape and parts of the vehicle body of a vehicle can be performed on a virtual object (a full-scale model or the like) without producing a real object.
[0004]
At present, as a specific configuration example for realizing stereoscopic vision, a so-called wall type for projecting an image on a large screen and a so-called wall type in which one screen is installed in one closed space and an image is projected on the screen are provided. There is a box type.
[0005]
In the evaluation of a wall-type model, the viewer is usually seated on a chair or the like to fix the position, and the model of the projected image is moved for evaluation. Since it is possible to increase the size of the screen, an image of, for example, one model is projected by a plurality of image projection devices. If the model is of a relatively small size, such as a motorcycle, it can be projected by one video projection device.
[0006]
Examples of the wall-type device configuration include a large screen, one or more video projectors installed behind the screen, and, for example, liquid crystal shutter glasses worn by a viewer.
[0007]
On the other hand, in the box-type stereoscopic image display device, an image of a model according to the position of the viewer is calculated and projected instantaneously (see, for example, JP-A-2000-330709). It is also possible to move around the model for evaluation.
[0008]
As the box-type device configuration, a room constituting a closed space, one video projection device for projecting a video on a screen, for example, liquid crystal shutter glasses worn by a viewer, and a position of the viewer are detected. Position sensors.
[0009]
In particular, this box type is optimal for the above-described design and evaluation of the vehicle body and the like because it does not take up space unlike the wall type and the model viewer can check the model while moving.
[0010]
[Problems to be solved by the invention]
Incidentally, examples of the position sensor include a magnetic position sensor, an ultrasonic position sensor, and an imaging position sensor. Magnetic position sensors are inexpensive, but have the disadvantage of being susceptible to metals. The ultrasonic position sensor has a problem that it is expensive and the size of the sensor body is large. The imaging type position sensor is more expensive than the ultrasonic position sensor, and has a problem that the size of the marker to be imaged attached to the head of the viewer is large and bulky.
[0011]
Therefore, it is conceivable to use an inexpensive magnetic position sensor. However, other than the above-described imaging type position sensor, the detection accuracy is lower than that of the imaging type position sensor, and distortion of a virtual image occurs at the time of model evaluation with a stereoscopic image.
[0012]
In this case, even if the distance between the sensor and the viewer is large, the detection accuracy of the sensor is shifted, so that depending on the position of the viewer, the movement of the viewer is not faithfully detected, and the actual viewer's eyes are not detected. A problem arises that the position of the eye differs from the position of the eye in calculation, and the viewer sees a three-dimensional image with an uncomfortable feeling.
[0013]
The present invention has been made in view of such a problem, and can display a stereoscopic image in accordance with an actual viewer's eye position in real time, so that the effect of the stereoscopic image can be sufficiently exhibited. It is an object of the present invention to provide a stereoscopic image display device and a stereoscopic image display method that can perform the method.
[0014]
[Means for Solving the Problems]
A three-dimensional image display device according to the present invention includes one or more image projection devices, and one or more screens installed corresponding to the one or more image projection devices and on which images from the image projection devices are projected. Stereoscopic video display, comprising: a position sensor for detecting a viewer's position; and a control device for sending, to the one or more video projectors, at least image data for stereoscopic display corresponding to the viewer's position. The apparatus is characterized in that it has a correction means for correcting the detection value of the position sensor according to the distance between the position sensor and the viewer.
[0015]
Thereby, since the sensitivity of the position sensor is corrected to be constant regardless of the position of the viewer, the problem that the actual position of the viewer differs from the calculated position is solved. As a result, it is possible to display a stereoscopic video image adjusted to the position of the viewer in real time.
[0016]
The correction means may include a means for correcting a characteristic of a detection value from the position sensor corresponding to a distance of the viewer from a preset origin to a linear characteristic.
[0017]
Further, in the above configuration, the control device includes a position detection unit that captures a detection value from the position sensor, and a coordinate calculation function unit that obtains the position of the viewer based on the detection value from the position detection unit. In this case, the correction unit may be provided in the position detection unit or the coordinate calculation function unit.
[0018]
In this case, the correction means includes means for capturing a detection value from the position sensor, and the detection means based on a correspondence table between a theoretical value and a detection value of the position sensor with respect to a preset absolute distance from the origin. Means for obtaining a correction value corresponding to the value, and means for adding the correction value to the fetched detection value to obtain a true detection value. The position of the viewer may be calculated based on the viewer.
[0019]
Next, in the stereoscopic video display method according to the present invention, the stereoscopic display image data corresponding to at least the position of the viewer is transmitted to one or more video projectors. In a three-dimensional image display method of forming a three-dimensional image by projecting an image on one or more screens installed corresponding to the three-dimensional image, a detection value of a position sensor that detects a position of a viewer of the three-dimensional image is determined by the method. The stereoscopic image is formed by correcting the distance in accordance with the distance between a position sensor and the viewer.
[0020]
This solves the problem that the actual position of the viewer and the calculated position are different from each other, and a stereoscopic video adjusted to the position of the viewer can be displayed in real time.
[0021]
Then, the characteristic of the detection value from the position sensor corresponding to the distance of the viewer from a preset origin may be corrected to a linear characteristic.
[0022]
Further, in the method, a difference between a theoretical value and a detection value of the position sensor with respect to a predetermined absolute distance from the origin is plotted as a correction value for each unit distance, and a correction value corresponding to the detection value for each unit distance is obtained. Creating an arrayed correspondence table; taking in the detection values from the position sensor, obtaining a correction value corresponding to the detection value based on the correspondence table, adding the correction value to the detection value, and And a step of calculating the position of the viewer based on the true detected value.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a stereoscopic video display device and a stereoscopic video display method according to the present invention will be described with reference to FIGS.
[0024]
First, as shown in FIGS. 1 and 3, the stereoscopic video display device 10 according to the present embodiment is partitioned by a frame 12 framed in a box shape, and a plurality of viewers 14 (14 a to 14 c) are displayed. A space 16 that can be accommodated, three screens 18a, 18b, and 18c arranged to partition the space 16, and three video projectors (hereinafter, referred to as the screen projectors 18a, 18b, and 18c) installed corresponding to the screens 18a, 18b, and 18c, respectively. , Projectors) 20 a, 20 b, and 20 c, a control device 22 that supplies image data to each of the projectors 20 a, 20 b, and 20 c, and liquid crystal shutter glasses 24 (see FIG. 2) worn by the viewer 14. A magnetic position sensor 26 is attached to the liquid crystal shutter glasses 24.
[0025]
The three screens 18 a, 18 b, and 18 c are arranged on the front of the space 16, one on the side, and one on the floor, and are fixed to the frame 12.
[0026]
In this embodiment, a first projection system in which an image from a projector is directly projected on a screen, and a second projection system in which an image from a projector is projected on a screen via reflection by a reflection mirror member And
[0027]
Specifically, a first projector 20a is provided behind the front screen 18a, and the image from the first projector 20a is directly projected on the front screen 18a. The projection system 30 is configured.
[0028]
A second projector 20b is installed near the boundary between the front screen 18a and the side screen 18b, and a reflection mirror member 32 is installed behind the side screen 18b. Is projected on the screen 18b on the side surface through reflection by the reflection mirror member 32, and constitutes a second projection system.
[0029]
A third projector 20c is installed near the upper portion of the front screen 18a, and a reflecting mirror member 36 is installed on the ceiling of the space 16, and an image from the third projector 20c is reflected by the reflecting mirror member 36. Is projected onto the screen 18c on the floor surface via the interface, and in this case also constitutes the second projection system 34.
[0030]
The third projector 20c is fixed to a frame 38 for installing a projector, which is installed behind the frame 12 that divides the space 16, and the reflection mirror member 36 is also fixed to the frame 38 at a predetermined angle. ing.
[0031]
Further, a magnetic field generator 42 for generating a magnetic field sensed by the position sensor 26 (see FIG. 2) is fixed to one beam 40 of the frame 12 that partitions the space 16, and the viewer 14 wears the magnetic field generator 42. The positions of the plurality of viewers 14 are respectively detected based on the information from the position sensor 26 of the liquid crystal shutter glasses 24.
[0032]
As shown in FIG. 4, the control device 22 includes a CPU 50 for executing various programs, a main memory 52 used as an area for executing programs and a storage area for data, the screens 18a, 18b and 18c, and the viewer 14. And an input / output port 56 for inputting / outputting data to / from an external device. The CPU 50, the main memory 52, the image memory 54, and the input / output port 56 are connected through a system bus 58.
[0033]
Registered in the input / output port 56 are a hard disk drive 62 for storing programs and data and accessing a hard disk 60 used as a virtual storage area, and CAD data and texture data of a model to be displayed as a stereoscopic video. The database 64, the glasses control unit 66 that controls the liquid crystal shutter glasses 24, and the position detection unit 68 that captures a detection value from the position sensor 26 are connected.
[0034]
Here, of the surface (rear surface) facing the front screen 18a, a point facing the center point of the lower end of the front screen 18a is defined as an origin P0. For example, a direction orthogonal to the surface of the front screen 18a is defined as an X direction. When the direction from the origin P0 toward the screen 18b on the side surface is the Y direction, and the direction from the origin P0 toward the ceiling is the Z direction, the detection value from the position sensor 26 includes the detection values in these three axial directions. Become.
[0035]
Next, the image data processing means 80 as software executed by the control device 22 will be described with reference to FIG. The image data processing means 80 has a function of creating and transmitting image data for stereoscopic display corresponding to the screens 18a, 18b and 18c to the projectors 20a, 20b and 20c, respectively.
[0036]
As shown in FIG. 5, the image data processing means 80 takes in the detection values from the position sensors 26 through the position detection section 68 and obtains the eye position (coordinates) of each viewer 14 in the coordinate calculation function section 82. And image data corresponding to the screens 18a, 18b, and 18c for the first to third projectors 20a, 20b, and 20c, respectively, and corresponding to the eye position (coordinates) of each viewer 14. An image creation function unit 84 that draws the image in the memory 54 and an image output function unit 86 that sends the image data drawn in the image memory 54 to the corresponding projectors 20a, 20b, and 20c.
[0037]
Here, the processing in the image data processing means 80 will be described with reference to the flowcharts of FIGS.
[0038]
First, in step S <b> 1 of FIG. 6, the CPU 50 reads a detection value from the position sensor 26 through the position detection unit 68. Thereafter, in step S2, the coordinate calculation function unit 82 obtains, for example, the position (coordinate) of the right eye based on the detection value.
[0039]
Next, in a step S3, processing relating to an image is started. First, in step S101 in FIG. 7, the image creation function unit 84 inputs the position of the eye obtained by the coordinate calculation function unit 82 as the coordinates of the camera viewpoint.
[0040]
Then, in step S102, the image creation function unit 84 calculates image data based on the camera viewpoint among the image data of the objects to be displayed, and draws the image data in the image memory 54 (rendering process). Thereafter, in step S103, the image output function unit 86 distributes the drawn image data for each screen, and outputs the image data to each of the projectors 20a to 20c in step S104. That is, the image data relating to the right eye is projected on each of the screens 18a to 18c by the processing in step S3 in FIG.
[0041]
Next, in step S4 of FIG. 6, the CPU 50 outputs an emitter signal to the liquid crystal shutter glasses 24 through the glasses control unit 66.
[0042]
Thereafter, in step S5, the coordinate calculation function unit 82 obtains the position (coordinate) of the left eye this time based on the detection value (the detection value read in step S1). After that, in step S6, the image-related processing is started, and image data relating to the left eye is projected on each of the screens 18a to 18c.
[0043]
Next, in step S7, the CPU 50 outputs an emitter signal to the liquid crystal shutter glasses 24 through the glasses control unit 66.
[0044]
By performing the above-described processing of steps S1 to S7 on each of the viewers 14a to 14c, it becomes possible for each of the viewers 14a to 14c to show a stereoscopic image corresponding to the eye position.
[0045]
By the way, as in the present embodiment, a case where the first projection system 30 in which the reflection mirror members 32 and 36 are not installed and the second projection system 34 in which the reflection mirror members 32 and 36 are installed coexist. In addition, there is a possibility that the linearly polarized light components (vibration directions of the vertical and horizontal waves) of the images projected on the screens 18a, 18b and 18c are not harmonized and appear as color unevenness.
[0046]
Therefore, in the present embodiment, as shown in FIGS. 8A to 8C, a phase plate 90 is provided between the first projector 20a and the front screen 18a, and further, the third projector 20c and the reflection mirror member are provided. A phase plate 92 is disposed between the phase plate 92 and the phase plate 36. Therefore, it is possible to match all the linearly polarized light components of the image projected on each of the screens 18a, 18b and 18c, and the problem of color unevenness is solved.
[0047]
As modes for installing the phase plates 90 and 92, there are the following modes in addition to the above. For example, assuming that a linearly polarized image is emitted from each of the projectors 20a, 20b, and 20c, the first projection system 30 projects, for example, a linearly polarized image from the first projector 20a directly onto the screen 18a. In the second projection system 34, for example, images of, for example, linearly polarized light from the second and third projectors 20b and 20c are temporarily reflected by the reflection mirror members 32 and 36 to become, for example, images of elliptically polarized light. The image is projected on the screen 18b on the side and the screen 18c on the floor.
[0048]
When a stereoscopic image is formed in this state, the polarization components may not be harmonized, and color unevenness may occur.
[0049]
Therefore, the phase plate 90 and / or 92 is installed in the first projection system 30 or the second projection system 34. As shown in FIGS. 9A to 9C, for example, by installing a phase plate 90 for converting, for example, linearly polarized light from the first projector 20 a to elliptically polarized light in the first projection system 30, the polarization components can be harmonized. The problem of uneven color is solved.
[0050]
On the other hand, when installing the phase plates 90 and 92 in the second projection system 34, as shown in FIGS. 10A to 10C, the second and third projectors 20b and 20c and the respective reflection mirror members 32 and 36 are connected to each other. It is conceivable to install phase plates 90 and 92 between the reflection mirror members 32 and 36 and the side and floor screens 18b and 18c, respectively, as shown in FIGS. 11A to 11C.
[0051]
As shown in FIGS. 10A to 10C, when installing the phase plates 90 and 92 between the second and third projectors 20 b and 20 c and each of the reflection mirror members 32 and 36, the phase plates 90 and 92 are It is preferable to provide a phase plate so that the transmitted image light is converted into linearly polarized light by the reflection mirror members 32 and 36.
[0052]
As shown in FIGS. 11A to 11C, when the phase plates 90 and 92 are installed between the reflection mirror members 32 and 36 and the side and floor screens 18b and 18c, respectively, the reflection mirror members 32 and 36 are reflected. It is preferable to provide a phase plate that converts the elliptically polarized image light into linearly polarized light.
[0053]
However, when a three-dimensional image is formed by projecting an image of linearly polarized light on each of the screens 18a, 18b and 18c, it is not a feeling of seeing a real vehicle (designed product) on the spot, but a feeling of looking at a model. Therefore, it is preferable to form a three-dimensional image by projecting an elliptically polarized image on each of the screens 18a, 18b and 18c as much as possible. That is, as shown in FIGS. 8A to 8C, a phase plate 90 is provided between the first projector 20a and the front screen 18a, and the phase plate is provided between the third projector 20c and the floor screen 18c. It is preferable that 92 be provided.
[0054]
On the other hand, a magnetic position sensor is used as the position sensor 26. However, the detection accuracy is usually low, and a virtual image is distorted at the time of model evaluation with a stereoscopic image.
[0055]
Therefore, in the present embodiment, after the absolute position of the viewer 14 (14a to 14c) in the space 16 and the detection value of the magnetic position sensor 26 are actually measured, the correspondence between the actually measured absolute position and the detection value is determined. Plotting (mapping) is performed, and a correction function for linearizing the output of the magnetic position sensor 26 is obtained based on the information of the plot.
[0056]
Specifically, for example, a direction orthogonal to the surface of the front screen 18a is defined as the X direction, and a point facing the center point of the lower end of the screen 18a on the surface (back surface) facing the front screen 18a is defined as the origin. When P0 is set, the output of the position sensor 26 when the viewer 14 moves toward the screen 18a from the origin P0 is captured, and the detection value of the position sensor 26 relative to the absolute distance from the origin P0 is taken for each unit distance (for example, 1 cm). Is plotted.
[0057]
FIG. 12 shows a straight line A based on the theoretical value (linear characteristic) of the position sensor 26 and a characteristic curve B based on a plot of the detected value (actually measured value). As can be seen from the characteristic curve B of the detection value, the detection accuracy varies depending on the position. Therefore, even if the viewer 14 moves greatly, the movement is not faithfully detected depending on the position where the viewer 14 is located, and in the coordinate calculation in the coordinate calculation function unit 82 (see FIG. 5), the actual viewer 14 is not detected. There is a problem that the eye position is different from the calculated eye position. In this case, the viewer 14 sees a three-dimensional image with a sense of strangeness.
[0058]
Therefore, in the present embodiment, the correction is performed so that the change in the detection value of the position sensor 26 has a linear characteristic, that is, the sensitivity of the position sensor 26 is constant regardless of the position of the viewer 14. In terms of the configuration, as shown by a two-dot chain line in FIG. 5, a correction function unit 100 as a means for performing the correction is incorporated in the coordinate calculation function unit 82 or the position detection unit 68 described above.
[0059]
The difference ΔDx (correction value) between the theoretical value (linear characteristic) LDx of the position sensor 26 and the detection value Dx with respect to the absolute distance Tx from the origin P0 is converted into a function for each unit distance (for example, 1 cm). That is, a correspondence table (correction function table TBLx) in which the correction values ΔDx corresponding to the detection values for each unit distance are arranged and recorded on the hard disk 60 (see FIG. 4) provided in the control device 22 together with the functions. Keep it. FIG. 13 shows a characteristic curve C indicating the correspondence between the detection value Dx and the correction value ΔDx.
[0060]
The above-described correction function is calculated in addition to the X direction, the Y direction (the direction from the origin P0 toward the screen 18b on the side surface and the direction from the origin P0 to the screen 18b) and the Z direction (the direction from the origin P0 to the ceiling). Is performed, and respective correction function tables TBLx, TBLy, and TBLz are created and recorded on the hard disk 60 together with the respective functions.
[0061]
As shown in FIG. 14, the correction function unit 100 includes a detection value capturing unit 102 that captures the detection values Dx, Dy, and Dz from the position sensor 26 or the position detection unit 68, and a correction function table TBLx, TBLy, and TBLz. Correction value calculation means 104 for obtaining correction values ΔDx, ΔDy, and ΔDz corresponding to the captured detection values Dx, Dy, and Dz based on the correction values ΔDx, calculated for the captured detection values Dx, Dy, and Dz, A detection value calculating means 106 for obtaining true detection values tDx, tDy, and tDz by adding ΔDy and ΔDz.
[0062]
Then, during actual use, the correction function unit 100 takes in the detection values Dx, Dy, and Dz from the position sensor 26 and corrects the correction values corresponding to the detection values based on the respective correction function tables TBLx, TBLy, and TBLz. ΔDx, ΔDy, and ΔDz are obtained, and correction values ΔDx, ΔDy, and ΔDz are added to the detection values Dx, Dy, and Dz to obtain true detection values tDx, tDy, and tDz. Then, the coordinate calculation function unit 82 of the control device 22 calculates the position of the viewer 14 based on the obtained true detection values tDx, tDy, and tDz.
[0063]
As described above, in the stereoscopic video display device 10 according to the present embodiment, the sensitivity of the position sensor 26 is corrected by the correction function unit 100 so that the sensitivity of the position sensor 26 becomes constant regardless of the position of the viewer 14. The problem that the eye position of the person 14 is different from the calculated eye position is solved. As a result, a stereoscopic video adjusted to the eye position of the viewer 14 is displayed in real time.
[0064]
Further, since the reflection mirror members 32 and 36 exist between the second projector 20b and the screen 18b on the side surface and between the third projector 20c and the screen 18c on the floor surface, for example, the second and The third projectors 20b and 20c can be installed near the front screen 18a and the side screen 18b.
[0065]
That is, since the light emitted from the second and third projectors 20b and 20c is reflected by the reflection mirror members 32 and 36 and projected on the screens 18b and 18c, the apparent distance of the optical path can be increased. Even if the second and third projectors 20b and 20c are installed near the front and side screens 18a and 18b, it is possible to project an image on almost the entire area of the side screen 18b and the floor screen 18c.
[0066]
This is advantageous in reducing the installation space for the three screens 18a to 18c and the three projectors 20a to 20c as in the present embodiment. For example, the screens 18a to 18c and the projectors 20a to 20c are closed. When installed in a closed space, the size of the closed space can be reduced. Therefore, as shown in FIG. 15, the stereoscopic video display device 10 according to the present embodiment can be installed in a limited closed space 112 such as a moving body 110 such as a vehicle. A three-dimensional image display facility 114 including the moving body 110 can be configured.
[0067]
In the three-dimensional image display equipment 114, the three-dimensional image display device 10 capable of forming a three-dimensional image can be accommodated in the closed space 112 of the moving body 110 and transported. When evaluating or giving a presentation using stereoscopic video, it can be performed anywhere, regardless of location.
[0068]
This has the advantage that it is possible to make corrections at the product design stage at an early stage, and to construct a design specification incorporating the opinions of the user at an early stage. In addition, it is possible to perform a demonstration at a site where the product is actually used, which is advantageous in increasing customer attraction of the product and motivation to purchase the product.
[0069]
It should be noted that the stereoscopic video display device and the stereoscopic video display method according to the present invention are not limited to the above-described embodiment, but can adopt various configurations without departing from the gist of the present invention.
[0070]
【The invention's effect】
As described above, according to the three-dimensional image display device and the three-dimensional image display method according to the present invention, it is possible to display a three-dimensional image matched to the actual viewer's eye position in real time, and to reduce the effect of the three-dimensional image. It can be fully demonstrated.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a stereoscopic video display device according to the present embodiment.
FIG. 2 is a perspective view showing an example of liquid crystal shutter glasses.
FIG. 3 is a front view showing the stereoscopic video display device according to the present embodiment.
FIG. 4 is a block diagram showing a configuration of a control device in the stereoscopic video display device according to the present embodiment.
FIG. 5 is a functional block diagram illustrating a configuration of an image data processing unit executed by a control device.
FIG. 6 is a flowchart (part 1) illustrating a processing operation of an image data processing unit.
FIG. 7 is a flowchart (part 2) illustrating a processing operation of the image data processing means.
FIGS. 8A to 8C are explanatory diagrams showing examples in which a phase plate is installed between the first projector and the front screen, and between the third projector and the reflection mirror member, respectively.
FIGS. 9A to 9C are explanatory diagrams illustrating an example in which a phase plate is provided in the first projection system.
FIGS. 10A to 10C are explanatory diagrams showing examples in which a phase plate is provided between the second and third projectors and each reflection mirror member.
FIGS. 11A to 11C are explanatory diagrams showing an example in which a phase plate is provided between each reflection mirror member and a screen on a side surface and a floor surface.
FIG. 12 is a diagram illustrating characteristics of a theoretical value and a detected value (actually measured value) of a position sensor with respect to an absolute distance from an origin.
FIG. 13 is a diagram illustrating a correspondence relationship between a correction value and a detection value of a position sensor.
FIG. 14 is a functional block diagram illustrating a configuration of a correction function unit.
FIG. 15 is a front view showing stereoscopic video display equipment configured with the stereoscopic video display device according to the present embodiment.
[Explanation of symbols]
10: stereoscopic image display device 14, 14a-14c: viewer
18a-18c ... Screen 20a-20c ... Projector
22: control device 24: liquid crystal shutter glasses
26 position sensor 42 magnetic field generator
68 position detector 80 image data processing means
82: Coordinate calculation function unit 100: Correction function unit
102: detection value acquisition means 104: correction value calculation means
106 ... Detection value calculation means

Claims (7)

One or more video projection devices;
One or more screens installed corresponding to the one or more image projection devices and on which images from the image projection device are projected;
A position sensor for detecting the position of the viewer,
A stereoscopic video display device having a control device for transmitting image data for stereoscopic display corresponding to at least a viewer's position to the one or more video projection devices,
A stereoscopic image display device, comprising: a correction unit that corrects a detection value of the position sensor according to a distance between the position sensor and the viewer. The stereoscopic video display device according to claim 1,
The stereoscopic image display device according to claim 1, wherein the correction unit includes a unit configured to correct a characteristic of a detection value from the position sensor corresponding to a distance of the viewer from a preset origin to a linear characteristic. The stereoscopic video display device according to claim 1 or 2,
When the control device has a position detection unit that captures a detection value from the position sensor, and a coordinate calculation function unit that determines the position of the viewer based on the detection value from the position detection unit,
The three-dimensional image display device, wherein the correction means is provided in the position detection unit or the coordinate calculation function unit. The stereoscopic video display device according to claim 3,
The correction means,
Means for capturing a detection value from the position sensor;
Means for determining a correction value corresponding to the captured detection value based on a correspondence table between a theoretical value and a detection value of the position sensor for an absolute distance from a preset origin,
Means for adding the correction value to the captured detection value to obtain a true detection value,
The three-dimensional image display device, wherein the coordinate calculation function unit calculates the position of the viewer based on the true detection value. At least one stereoscopic display image data corresponding to the position of the viewer is transmitted to one or more video projectors, and the image data is transmitted to one or more screens installed corresponding to the one or more video projectors. In a stereoscopic image display method of forming a stereoscopic image by projecting an image,
A stereoscopic image display method comprising: correcting a detection value of a position sensor that detects a position of a viewer of the stereoscopic image according to a distance between the position sensor and the viewer to form the stereoscopic image. . The stereoscopic video display method according to claim 5,
A stereoscopic image display method comprising: correcting a characteristic of a detection value from the position sensor corresponding to a distance of the viewer from a preset origin to a linear characteristic. The stereoscopic video display method according to claim 5 or 6,
The difference between the theoretical value and the detection value of the position sensor with respect to the absolute distance from the preset origin is plotted as a correction value for each unit distance, and a correspondence table in which correction values corresponding to the detection values for each unit distance are arranged. Steps to create;
Capturing a detection value from the position sensor, obtaining a correction value corresponding to the detection value based on the correspondence table, and adding the correction value to the detection value as a true detection value;
Calculating the position of the viewer based on the true detection value.

Images