JPH10232953A - Stereoscopic image generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a display list memory and to reduce processing time by sharing a display list by respective stereoscopic image generation graphic pipelines for the left eye and for the right eye. SOLUTION: Stereoscopic model data are sent from a host computer 1 to a stereoscopic vision image generation module 2. The stereoscopic vision image generation module 2 generates the stereoscopic images of the right eye and the left eye by stereoscopic image generation modules 3 and 3' which are two graphic pipelines, supplies them to respective displays 10 and 10' for the right eye and for the left eye and presents stereoscopic images provided with a stereoscopic effect based on the principle of parallax of both eyes to an observer. At the time, since the stereoscopic image generation module 3' for the left eye is not provided with a display list holding module, a vertex coordinate transformation module 5' receives the stereoscopic model data and the view point data of the left eye from the display list dispatch module 11 of the stereoscopic image generation module 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image generating apparatus for generating a stereoscopic image of a binocular parallax method.

[0002]

FIG. 5 shows, for example, Iwanami Koza Software Science 10, "Graphics and Man-Machine System", published by Iwanami Shoten Co., Ltd. on May 17, 1995, ISBN4-00.
010350-4C3355 pages 225 to 22
It is a processing block diagram which shows the conventional stereoscopic image generation apparatus by the binocular parallax system described on page 7.

In FIG. 1, reference numeral 101 denotes a host computer, which executes application software that uses the stereoscopic image generation module 102 as an output device for display. An example of the application is a walkthrough in a virtual reality environment. The host computer 101 sends the stereoscopic model data to be displayed to the stereoscopic image generation module 102 in order to display the execution result of the application.

[0004] When performing continuous display (animation) of a stereoscopic image in a time series, required model data of a stereoscopic image to be displayed is continuously generated or necessary from a plurality of stereoscopic model data generated and stored in advance. The data is continuously sent to the stereoscopic image generation module 102 by extracting stereo model data or the like.

The host computer 101 has a function of controlling the stereoscopic image generation module 102, for example, setting an output resolution.

The stereoscopic image generation module 102 continuously receives stereo model data to be displayed from the host computer 101, generates a right eye stereo image, and outputs the stereo image for each display unit time. A generation module 103 and a left-eye stereoscopic image generation module 10 that generates a left-eye stereoscopic image and outputs the stereoscopic image for each display unit time
3 '. That is, the stereoscopic image generation module 103
The image for the right eye is converted into a three-dimensional image
An image for the left eye is generated by 3 'and output to the display 110 for the right eye and the display 110' for the left eye, respectively.

The three-dimensional image generation module 103 and the three-dimensional image generation module 103 'have exactly the same configuration. The internal configuration of one of the three-dimensional image generation modules 103 includes a display list holding module 104, a vertex coordinate conversion module 105, a shading module 106, a hidden surface erasing module 107, a frame buffer writing module 108, and a frame buffer 109. They are connected, and generate a stereoscopic image of the right eye by the flow work processing of each module. The three-dimensional image generation module including the connection of the modules 104 to 109 is referred to as a three-dimensional image generation graphic pipeline. The stereoscopic image generation processing by the stereoscopic image generation graphic pipeline is referred to as rendering.

The type, function, and order of the modules vary depending on the type of stereoscopic image generation algorithm used.
Here, the case where the host computer 101 and the stereoscopic image generation module 102 are configured separately and independently is shown.
It is also possible to adopt a configuration in which the same computer takes charge of the function of the host computer 101 and a part of the function of the stereoscopic image generation module 102.

Display list holding module 104
Receives the three-dimensional model data for each display unit time from the host computer 101 and holds it as a display list.

The vertex coordinate conversion module 105 mainly converts the two-dimensional coordinate position of the three-dimensional coordinate data received from the display list holding module 104 based on the three-dimensional coordinate data of each vertex from the viewpoint of the right eye into an affine coordinate. It is determined using a conversion technique. Further, other values required for the subsequent module, such as the surface normal at each vertex and the distance from the viewpoint, are also calculated and obtained.

The shading module 106 forms each of the three-dimensional objects based on the two-dimensional vertex coordinates received from the vertex coordinate conversion module 105, the data of the surface normal, the data of the light source, and the color information of the three-dimensional model included in the three-dimensional model data. The display color inside the surface is calculated for each surface using an algorithm such as Phong shading. The calculation result is a candidate for a pixel value (pixel value) to be written to each pixel of the frame buffer 109. This pixel value is a value representing the color and luminance to be displayed. For one pixel on the frame buffer 109, there may be a plurality of candidates generated from a plurality of planes.

The hidden surface elimination module 107 determines the anteroposterior relationship of each surface constituting a three-dimensional object (in some cases, each pixel constituting the surface) by using an algorithm such as a Z-buffer or a Z-sort to determine the distance from the viewpoint. Perform based on.

Frame buffer writing module 10
8 determines which one of the pixel value candidates obtained by the shading module 106 is to be written in response to the determination of the context obtained by the hidden surface removal module 107, and determines the determined pixel value by each pixel of the frame buffer 109. Write to.

The frame buffer 109 holds two-dimensional image data to be displayed for each display unit time. That is, pixel values corresponding to all two-dimensional grid points are generally held for each grid point.

The display 110 for the right eye presents the generated image to the right eye of the observer (user) by, for example, a head mount display method.

Display list holding module 10
4 ′, vertex coordinate conversion module 105 ′, shading module 106 ′, hidden surface removal module 107 ′,
The frame buffer writing module 108 'and the frame buffer 109'
And a left-eye stereoscopic image generation module 103 'for generating a left-eye stereoscopic image. The left-eye display 110 'has the same function as the right-eye display 110.

Next, the operation will be described. First, the host computer 101 sends the stereoscopic image generation module 10
Each surface (polygon) that composes a solid (object) in 2
3D model data describing the position and color of The stereoscopic image generation module 102 generates a right-eye stereoscopic image and a left-eye stereoscopic image by using two graphic pipelines, that is, stereoscopic image generation modules 103 and 103 ′, and displays a right-eye display 110 and a left-eye display. 1
10 ′, and presents a stereoscopic image having a stereoscopic effect based on the principle of binocular parallax to the observer.

Further, the animation is performed by successively performing this processing and presenting images one after another for each display unit time. Generally, if the display unit time is set to 1/30 second or less, a smooth animation is obtained.

Next, the operation of the graphic pipeline constituting the stereoscopic image generation module 103 will be described. First, the display list holding module 104 receives three-dimensional model data for each display unit time from the host computer 101, and holds this as a display list. The vertex coordinate conversion module 105 receives the three-dimensional model data from the display list holding module 104, and based on the three-dimensional coordinate data of each vertex, calculates a two-dimensional coordinate position viewed from the viewpoint of the right eye, a surface normal at each vertex, and the like. Ask.

The shading module 106 calculates the display color inside each of the surfaces constituting the three-dimensional object from the two-dimensional vertex coordinates received from the vertex coordinate conversion module for each surface, and writes the pixel value to each pixel of the frame buffer 109 ( Pixel value). The hidden surface elimination module 107 determines the anteroposterior relationship of each surface constituting the three-dimensional object (in some cases, each pixel constituting the surface) based on the distance from the viewpoint.

Next, the frame buffer writing module 108 receives the determination of the context determined by the hidden surface erasing module 107 and determines which of the pixel value candidates determined by the shading module 106 to write. The written pixel value is written to each pixel of the frame buffer 109.

Thus, the host computer 10
Frame buffer 10 based on the data received from
9, a right-eye image to be output to the right-eye display 110 is generated, and finally the image held in the frame buffer 109 is output to the right-eye display 110 for each display unit time. The operation of the right-eye stereoscopic image generation module 103 has been described above. The left-eye stereoscopic image generation module 103 ′ operates in the same manner to generate a left-eye image, and the left-eye display 110. Output to '.

FIG. 5 shows an apparatus configuration in which two of the three-dimensional image generation modules 103 and 103 'are arranged in parallel.
The three-dimensional image generation modules 103 and 103 ′ may use the same device except for the frame buffer 109 (109 ′), and may have a device configuration in which right-eye image generation and left-eye image generation are alternately performed by time division. .

[0024]

Since the conventional stereoscopic image generating apparatus is configured as described above, it is necessary to separately generate a right-eye image and a left-eye image by rendering calculation from stereo model data. The amount of resources required, such as the amount of calculation, is doubled compared to the time of generating a single-eye image. In addition, when the time division method is used, there is a problem that the amount of image generation per unit time is halved.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is possible to reduce the amount of various resources required for generating a stereoscopic image and to improve the amount of image generation per unit time. The aim is to obtain a device.

[0026]

According to a first aspect of the present invention, there is provided a three-dimensional image generating apparatus for receiving a three-dimensional model data from the outside and generating a left-eye image and a three-dimensional image generating graphic pipeline. A display list holding module for receiving the stereo model data provided in one of the three-dimensional image generation graphic pipelines, and a display list from the display list holding module. And a display list dispatch module for passing the other stereoscopic image generation graphic pipeline.

According to a second aspect of the present invention, there is provided a three-dimensional image generating apparatus which receives three-dimensional model data from the outside and generates a left-eye image and a three-dimensional image generating graphic pipeline for generating a right-eye image. And a vertex coordinate transformation for generating a left (right) eye image based on a calculation result at the time of generating a right (left) eye image from one of the three-dimensional image generation graphic pipelines. A vertex coordinate conversion module for performing the difference calculation is provided in the other three-dimensional image generation graphic pipeline.

According to a third aspect of the present invention, there is provided a three-dimensional image generating apparatus which receives three-dimensional model data from outside and generates a left-eye image and a three-dimensional image generating graphic pipeline for generating a right-eye image. And a shading for generating a left (right) eye image based on a calculation result when a right (left) eye image is generated from one of the three-dimensional image generation graphic pipelines. A shading module for performing calculations is provided in the other three-dimensional image generation graphic pipeline.

According to a fourth aspect of the present invention, there is provided an exchange apparatus for a stereoscopic image generating apparatus, wherein an output of a stereoscopic image generating module for generating an image for a left eye and an output of a stereoscopic image generating module for generating an image for a right eye. Is selectively output to both the right-eye display and the left-eye display.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a processing block diagram of a stereoscopic image generating apparatus according to Embodiment 1 of the present invention. In the figure, reference numeral 1 denotes a host computer (external), and a stereoscopic image generating module 2 is used as an output device for display. Execute the application software to be used. Applications include, for example, walkthroughs in a virtual reality environment. The host computer 1 sends the stereoscopic model data to be displayed to the stereoscopic image generation module 2 for the purpose of displaying the execution result of the application.

When performing continuous display (animation) of a stereoscopic image in a time series, three-dimensional model data to be displayed is continuously generated, or necessary three-dimensional model data generated and stored in advance is used. The data is continuously sent to the stereoscopic image generation module 2 by extracting the stereo model data or the like.

The host computer 1 has a function of controlling the stereoscopic image generation module 2, for example, setting an output resolution.

The stereoscopic image generation module 2 continuously receives stereo model data to be displayed from the host computer 1, generates a right-eye stereo image, and outputs the stereo image for each display unit time. Image generation module 3
And a left-eye stereoscopic image generation module 3 ′ that generates a left-eye stereoscopic image and outputs the stereoscopic image for each display unit time.
That is, the image for the right eye is generated by the stereoscopic image generation module 3, and the image for the left eye is generated by the stereoscopic image generation module 3 ′, and output to the display 10 for the right eye and the display 10 ′ for the left eye.

The three-dimensional image generation module 3 and the three-dimensional image generation module 3 'have exactly the same configuration. One of the three-dimensional image generation modules 3 includes a display list holding module 4, a display list dispatch module 11, a vertex coordinate conversion module 5, a shading module 6, a hidden surface elimination module 7, a frame buffer writing module 8, and a frame buffer 9. Are connected in series, and a stereoscopic image of the right eye is generated by the flow work processing of each module. The three-dimensional image generation module including the connection of the modules 4 to 9 is referred to as a three-dimensional image generation graphic pipeline here. The stereoscopic image generation processing by the stereoscopic image generation graphic pipeline is referred to as rendering.

The type, function, and order of the modules vary depending on the type of the stereoscopic image generation algorithm used.
Here, the case where the host computer 1 and the stereoscopic image generation module 2 are configured separately and independently is shown. However, a configuration in which the function of the host computer 1 and a part of the function of the stereoscopic image generation module 2 are handled by the same computer is described. It is also possible to take.

The display list holding module 4 includes:
The three-dimensional model data for each display unit time is received from the host computer 1 and held as a display list. The display list dispatch module 11 passes the three-dimensional model data received from the display list holding module 4 to the vertex coordinate conversion module 5 together with the right eye viewpoint data.

The vertex coordinate conversion module 5 mainly converts the two-dimensional coordinate position of the three-dimensional coordinate data received from the display list dispatch module 11 based on the three-dimensional coordinate data of each vertex from the viewpoint of the right eye into an affine. It is determined using a conversion technique. Further, other values required for the subsequent module, such as the surface normal at each vertex and the distance from the viewpoint, are also calculated and obtained.

The shading module 6 forms each of the three-dimensional objects based on the two-dimensional vertex coordinates received from the vertex coordinate conversion module 5, the data of the surface normal, the data of the light source, and the color information of the three-dimensional model included in the three-dimensional model data. The display color inside the surface is calculated for each surface using an algorithm such as Phong shading. The calculation result is a candidate for a pixel value (pixel value) to be written to each pixel of the frame buffer 9. This pixel value is a value representing the color and luminance to be displayed. For one pixel on the frame buffer 9,
There may be multiple candidates originating from multiple planes.

The hidden surface elimination module 7 includes a Z buffer
Using an algorithm such as sorting, the determination of the anteroposterior relationship of each surface constituting the solid (or each pixel constituting the surface in some cases) is performed based on the distance from the viewpoint.

Frame buffer writing module 8
Determines which of the pixel value candidates determined by the shading module 6 is to be written in response to the context determination determined by the hidden surface removal module 7, and assigns the determined pixel value to each pixel of the frame buffer 9. Write to.

The frame buffer 9 holds two-dimensional image data to be displayed for each display unit time. That is, pixel values corresponding to all two-dimensional grid points are generally held for each grid point.

The display 10 for the right eye is, for example, an observer (user) by a head mount display system.
The generated image is presented to the right eye.

The internal configuration of the other three-dimensional image generation module 3 ′ includes a vertex coordinate conversion module 5 ′, a shading module 6 ′, a hidden surface erasing module 7 ′, a frame buffer writing module 8 ′, and a frame buffer 9 ′.
Are connected in series, and a stereoscopic image of the left eye is generated by the flow work processing of each module. The vertex coordinate conversion module 5 ′ receives the viewpoint data for the left eye together with the three-dimensional model data from the display list dispatch module 11. Each other module 6 '
To 9 'have the same functions as the modules 4 to 9 and generate a left-eye stereoscopic image. The left-eye display 10 'has the same function as the right-eye display 10.

Next, the operation will be described. First, stereo model data describing the position and color of each surface (polygon) constituting a stereo (object) is sent from the host computer 1 to the stereoscopic image generation module 2. The stereoscopic image generation module 2 generates a right-eye stereo image and a left-eye stereo image by using two graphic pipelines, that is, the three-dimensional image generation modules 3 and 3 ′, and displays the right-eye display 10 and the left-eye display. 10 ′, and presents a stereoscopic image having a stereoscopic effect based on the principle of binocular parallax to the observer.

The animation is performed by successively performing this processing and presenting images one after another for each display unit time. Generally, if the display unit time is set to 1/30 second or less, a smooth animation is obtained.

Next, the operation of the graphic pipeline constituting the stereoscopic image generation module 3 will be described. First, the display list holding module 4 receives the stereo model data for each display unit time from the host computer 1 and holds this as a display list. The display list dispatch module 11 passes the three-dimensional model data received from the display list holding module 4 to the vertex coordinate conversion module 5 together with the right eye viewpoint data. The vertex coordinate conversion module 5 calculates, based on the three-dimensional coordinate data of each vertex, the two-dimensional coordinate position viewed from the viewpoint of the right eye, Find the surface normal, etc.

The shading module 6 calculates the two-dimensional vertex coordinates received from the vertex coordinate
The display color inside each surface constituting the solid is calculated for each surface, and a candidate group of pixel values (pixel values) to be written to each pixel of the frame buffer 9 is obtained. The hidden surface elimination module 7 determines the front-back relationship of each surface constituting the solid (or each pixel constituting the surface in some cases) based on the distance from the viewpoint.

Next, the frame buffer writing module 8 receives the determination of the context determined by the hidden surface erasing module 7 and determines which of the pixel value candidates determined by the shading module 6 is to be written. The written pixel value is written to each pixel of the frame buffer 9.

In this manner, a right-eye image to be output to the right-eye display 10 is generated on the frame buffer 9 based on the data received from the host computer 1,
Finally, the image held in the frame buffer 9 is output to the right-eye display 10 for each display unit time.

On the other hand, since the left-eye stereoscopic image generation module 3 ′ does not have a display list holding module, the vertex coordinate conversion module 5 ′ transmits the stereoscopic model data from the display list dispatch module 11 of the stereoscopic image generation module 3 to the left. The eye viewpoint data is received, and a two-dimensional coordinate position viewed from the right eye viewpoint, a surface normal at each vertex, and the like are obtained based on the three-dimensional coordinate data of each vertex.

Thereafter, the shading module 6 ', hidden surface erasing module 7', frame buffer writing module 8 ', and frame buffer 9' are referred to as the shading module 6, hidden surface erasing module 7, frame buffer writing module 8, frame It operates in the same manner as each module of the buffer 9, generates an image for the left eye, and outputs it to the display 10 'for the left eye.

In the first embodiment, the system in which the host computer 1 independently sets the viewpoint data of the left and right eyes in the display list holding module 4 has been described. The list dispatch module 11 may calculate the left eye viewpoint data by calculation from the right eye viewpoint data.

Embodiment 2 FIG. 2 is a processing block diagram of a stereoscopic image generating apparatus according to a second embodiment of the present invention, in which a stereoscopic image generating module 3 to a display list dispatch module 11 in the first embodiment are used.
And a transformed data dispatch module 12 for receiving transformed data from the vertex coordinate transformation module 5 is provided instead. A vertex coordinate transformation module 50 'which is a component of the stereoscopic image generation module 3' is provided from the transformed data dispatch module 12. The converted data for the right eye is passed to the second embodiment.
Therefore, the same portions are denoted by the same reference numerals, and redundant description will be omitted.

Next, the operation will be described. In the graphic pipeline in the stereoscopic image generation module 3,
The converted data dispatch module 12 passes the converted data received from the vertex coordinate conversion module 5 to the shading module 6 without processing. Therefore, the operation of the stereoscopic image generation module 3 is the same as that of the first embodiment.
Similarly, an image for the right eye is generated by a graphic pipeline from the display list holding module 4 to the frame buffer 9.

On the other hand, the vertex coordinate conversion module 50 ′ of the stereoscopic image generation module 3 ′ receives the converted data for the right eye from the converted data dispatch module 12. The vertex coordinate conversion module 50 ′ executes the vertex coordinate conversion calculation for generating the left eye image, which is in charge of itself, by a difference operation using the calculation result of the vertex coordinate conversion module 5.

This calculation may be based on an algorithm in which accuracy is sacrificed to some extent. For example, when calculating the horizontal position of a vertex on the projection plane, a horizontal displacement inversely proportional to the distance of the vertex from the viewpoint is added to the position obtained by the vertex coordinate conversion module 50 '. In addition,
In this case, the vertical position may be the same as the value obtained by the vertex coordinate conversion module 5.

The processing contents of each of the modules 7 'to 9' after the shading module 6 'receiving the converted data after calculation from the vertex coordinate conversion module 50' are the same as those of the first embodiment. 5
An image for the left eye is generated by a graphic pipeline from 0 ′ to the frame buffer 9 ′.

Embodiment 3 FIG. FIG. 3 is a processing block diagram of a stereoscopic image generating apparatus according to Embodiment 3 of the present invention, in which a stereoscopic image generating module 3 to a display list dispatch module 11 in Embodiment 1 are used.
And a shading data dispatch module 13 for passing the shaded data received from the shading module 6 to the hidden surface erasing module 7 instead. A certain shading module 60 '
Since the other configuration is the same as that of the first embodiment, the same portions are denoted by the same reference numerals, and redundant description will be omitted.

Next, the operation will be described. In the graphic pipeline in the stereoscopic image generation module 3,
Shaded data dispatch module 13
Passes the shaded data received from the shading module 6 to the hidden surface removal module 7. Therefore, the operation of the stereoscopic image generation module 3 is the same as that of the first embodiment, and the right eye image is generated by the graphic pipeline from the display list holding module 4 to the frame buffer 9.

On the other hand, the shading module 60 ′ of the stereoscopic image generation module 3 ′ receives the shaded data for the right eye from the shaded data dispatch module 13. The shading module 60 ′ executes the shading calculation for generating the left eye image, which is in charge of itself, by a difference operation using the calculation result of the shading module 6.

This calculation may be based on an algorithm that sacrifices some accuracy. For example, with respect to one scan line in the polygon obtained by the shading module 6, the color value and Z value of each point of the corresponding scan line may be obtained by primary interpolation. However, it is necessary to simultaneously move each vertex and each intermediate point in the horizontal direction by the method described in the second embodiment.

Each of the shading modules 60 'and subsequent modules 7' which have received the calculated shaded data for the right eye from the shading module 6
Processing contents of 9 ′ are the same as those in the first embodiment, and a left-eye image is generated by a graphic pipeline from the shading module 60 ′ to the frame buffer 9 ′.

Embodiment 4 FIG. 4 is a processing block diagram of a stereoscopic image generating apparatus according to a fourth embodiment of the present invention. The stereoscopic image generating module 2 includes a right-eye stereo image generating module 3 and the contents described in the first embodiment. A stereoscopic image generating module 3 'for any of the left eyes in the third embodiment, and both stereoscopic image generating modules 3 and 3'
Exchange device 1 in which the observer manually switches the output of
4 for selectively outputting to the display 10 for the right eye and the display 10 'for the left eye.

Therefore, when an algorithm that sacrifice accuracy is adopted in the stereoscopic image generation module 3 ′, the output of the stereoscopic image generation module 3 is output to the left eye display 10 even if the quality of the image for the left eye is degraded. By outputting the output of the stereoscopic image generation module 3 'to the display 10 for the right eye, the quality of the image for the left eye can be prioritized.
This is effective when the left eye is more important to the observer than the right eye.

However, it is necessary to reverse the way of giving viewpoint data from the host computer 1 to the stereoscopic image generating module 2 between the stereoscopic image generating modules 3 and 3 '. For example, in the first embodiment, the vertex coordinate conversion module 5 'reverses the direction of displacement of the horizontal coordinate applied to each vertex.

[0066]

As described above, according to the first aspect of the present invention, a display list is used to generate a three-dimensional image generation graphic pipeline for generating a left-eye image and a three-dimensional image generation for generating a right-eye image. Since it is configured to be shared with the graphic pipeline, there is an effect that the display list memory can be reduced. Further, in one of the three-dimensional image generation modules, the data transfer time between the host computer and the display list holding module is eliminated, and the processing time can be reduced.

According to the second aspect of the present invention, the vertex coordinate transformation for generating the image for the left (right) eye is obtained by the difference operation based on the calculation result at the time of generating the image for the right (left) eye. Thus, there is an effect that the amount of calculation is reduced and the amount of image generation per unit time is improved. In addition, since the vertex coordinate conversion module is configured to be simplified, there is an effect that the number of components of the device can be reduced.

According to the third aspect of the present invention, the shading for generating the image for the left (right) eye is obtained by the difference operation based on the calculation result at the time of generating the image for the right (left) eye. Therefore, there is an effect that the amount of calculation is reduced and the amount of image generation per unit time is improved. Further, since the vertex coordinate conversion module is omitted and the shading module is simplified, there is an effect that the number of components of the apparatus can be reduced.

According to the fourth aspect of the present invention, the output of the three-dimensional image generation graphic pipeline having the higher calculation accuracy can be assigned to both the right eye and the left eye according to the request of the observer. This has the effect of more accurately generating an image on the side important to the observer (for example, the eye that the observer uses as an axis for stereoscopic vision or the eye with higher visual acuity).

[Brief description of the drawings]

FIG. 1 is a processing block diagram illustrating a stereoscopic image generation device according to a first embodiment of the present invention.

FIG. 2 is a processing block diagram illustrating a stereoscopic image generation device according to a second embodiment of the present invention.

FIG. 3 is a processing block diagram illustrating a stereoscopic image generation device according to a third embodiment of the present invention;

FIG. 4 is a processing block diagram illustrating a stereoscopic image generation device according to a fourth embodiment of the present invention;

FIG. 5 is a processing block diagram illustrating a conventional stereoscopic image generation device.

[Explanation of symbols]

1 host computer (external), 3,3 'stereoscopic image generation module (stereoscopic image generation graphic pipeline), 4 display list holding module, 5,5
0 'vertex coordinate conversion module, 11 display list dispatch module, 14 exchange device, 60'
Shading module.

Claims (4)

[Claims] 1. A three-dimensional image generation graphic pipeline that receives three-dimensional model data from outside and generates a left-eye image, a three-dimensional image generation graphic pipeline that receives the three-dimensional model data and generates a right-eye image, A display list holding module provided in one of the three-dimensional image generation graphic pipelines for receiving the three-dimensional model data, and a display list dispatch module receiving a display list from the display list holding module and passing the other three-dimensional image generation graphic pipeline And a stereoscopic image generation device comprising: 2. A three-dimensional image generation graphic pipeline that receives three-dimensional model data from the outside and generates an image for the left eye, a three-dimensional image generation graphic pipeline that receives the three-dimensional model data and generates an image for the right eye, The vertex coordinate conversion for generating the left (right) eye image is performed by a difference operation based on the calculation result at the time of generating the right (left) eye image from one stereoscopic image generation graphic pipeline. A stereoscopic image generating apparatus comprising: a vertex coordinate conversion module provided in a stereoscopic image generation graphic pipeline. 3. A three-dimensional image generation graphic pipeline that receives three-dimensional model data from the outside and generates a left-eye image, a three-dimensional image generation graphic pipeline that receives the three-dimensional model data and generates a right-eye image, The other three-dimensional image is formed such that shading for generating the left (right) eye image is performed by a difference operation based on a calculation result at the time of generating the right (left) eye image from one of the three-dimensional image generation graphic pipelines. And a shading module provided in the generated graphic pipeline. 4. An output of a stereoscopic image generation module for generating an image for a left eye and an output of a stereoscopic image generation module for generating an image for a right eye are output to either a right-eye display or a left-eye display. The stereoscopic image generating apparatus according to any one of claims 1 to 3, further comprising an exchange device for selectively outputting the image.