Three dimensional rendering of display information using viewer eye coordinates

• US 7,884,823 B2
• Filed: 06/12/2007
• Issued: 02/08/2011
• Est. Priority Date: 06/12/2007
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Kang, Sing Bing, Bertolami, Joe, Hawkins, Dax, Lange, Jonathan E., Craig, Robert M.
• Primary Examiner(s): Hajnik; Daniel F
• Application Number:
  US11/761,604
• Publication Number:
  US 20080309660A1
• Time in Patent Office: 1,337 Days
• Field of Search: None
• US Class Current: 345/427
• CPC Class Codes: A63F 13/10 Control of the course of the game, e.g. start, progess, end
• CPC Class Codes: A63F 13/45 Controlling the progress of the video game
• CPC Class Codes: A63F 13/525 Changing parameters of virtual cameras
• CPC Class Codes: A63F 2300/66 for rendering three dimensional images
• CPC Class Codes: G06T 15/20 Perspective computation
• CPC Class Codes: H04N 13/275 from 3D object models, e.g. computer-generated stereoscopic image signals

Abstract

Game data is rendered in three dimensions in the GPU of a game console. A left camera view and a right camera view are generated from a single camera view. The left and right camera positions are derived as an offset from a default camera. The focal distance of the left and right cameras is infinity. A game developer does not have to encode dual images into a specific hardware format. When a viewer sees the two slightly offset images, the user'"'"'s brain combines the two offset images into a single 3D image to give the illusion that objects either pop out from or recede into the display screen. In another embodiment, individual, private video is rendered, on a single display screen, for different viewers. Rather than rendering two similar offset images, two completely different images are rendered allowing each player to view only one of the images.

Claims

1. A processor-implemented method for rendering information in three dimensions, the method comprising:

receiving, in the processor, default data indicative of an image from a default virtual camera;

mapping coordinates of each of a first eye and a second eye of a viewer to a world space coordinate system;

refining the mapped coordinates of the first eye and the second eye in the world space coordinate system to account for a distance of the viewer from a display device;

using the processor to generate first data indicative of a first image from a first virtual camera located at the refined mapped coordinates of the first eye;

using the processor to generate second data indicative of a second image from a second virtual camera located at the refined mapped coordinates of the second eye, wherein;

a viewing angle associated with the first virtual camera is offset, in accordance with a first offset, from a viewing angle associated with the default virtual camera;

a viewing angle associated with the second virtual camera is offset, in accordance with a second offset, from a viewing angle associated with the default virtual camera;

a focal distance of the first virtual camera is infinity; and

a focal distance of the second virtual camera is infinity;

using the processor to generate a composite image comprising the first image and the second image; and

using the processor to provide the composite image for rendering using the display device, wherein the composite image is perceivable in three dimensions.

2. A method in accordance with claim 1, wherein the first image and the second image are indicative of a video game image.

3. A method in accordance with claim 1, wherein the viewing angle associated with the first virtual camera is parallel with the viewing angle associated with the second virtual camera.

4. A method in accordance with claim 1, further comprising mapping a real world coordinate to a game coordinate to determine the first offset and the second offset.

5. A method in accordance with claim 4, wherein the real world coordinate comprises at least one of:

a distance between eyes of a viewer of the composite image; and

a distance between a viewer of the composite image and a display surface on which the composite image is rendered.

6. A method in accordance with claim 1, wherein:

the first offset comprises an offset in a first direction from the viewing angle of the default virtual camera;

the second offset comprises an offset in a second direction from the viewing angle of the default virtual camera; and

the first direction is in an opposite direction from the second direction.

7. A method in accordance with claim 1, the information is rendered in a graphics processing unit of the processor.

8. A method in accordance with claim 1, wherein the composite image comprises two separate two dimensional images, the method further comprising toggling each of the two separate images for allowing two viewers to view a respective one of the two separate images.

9. A method in accordance with claim 1, wherein the information comprises video game information and a portion of the video game information is rendered in three dimensions.

10. An apparatus comprising:

a memory configured to store processor-executable instructions; and

a processor configured to receive the processor-executable instructions from the memory and to execute the processor-executable instructions to;

map coordinates of each of a first eye and a second eye of a viewer to a world space coordinate system;

refine the mapped coordinates to account for a distance of the viewer from a display device;

generate, from default data indicative of a default image from a default virtual camera;

first data indicative of a first image from a first virtual camera having a location determined as a function of the mapped coordinates of the first eye; and

second data indicative of a second image from a second virtual camera have a location determined as a function of the mapped coordinates of the second eye, wherein;

a viewing angle associated with the first virtual camera is offset, in accordance with a first offset, from a viewing angle associated with the default virtual camera;

a viewing angle associated with the second virtual camera is offset, in accordance with a second offset, from a viewing angle associated with the default virtual camera;

a focal distance of the first virtual camera is infinity; and

a focal distance of the second virtual camera is infinity,

generate a composite image comprising the first image and the second image; and

render the composite image, wherein the composite image is perceivable in three dimensions.

11. An apparatus in accordance with claim 10, wherein the first image and the second image are indicative of a video game image.

12. An apparatus in accordance with claim 10, wherein the viewing angle associated with the first virtual camera is parallel with the viewing angle associated with the second virtual camera.

13. An apparatus in accordance with claim 10, further configured to map a real world coordinate to a game coordinate to determine the first offset and the second offset.

14. An apparatus in accordance with claim 13, wherein the real world coordinate comprises at least one of:

a distance between eyes of a viewer of the composite image; and

a distance between a viewer of the composite image and a display surface on which the composite image is rendered.

15. An apparatus in accordance with claim 10, wherein the composite image comprises two separate two dimensional images, and wherein the processor is further configured to toggle each of the two separate images for allowing two viewers to view a respective one of the two separate images.

16. An apparatus in accordance with claim 10, wherein the information comprises video game information and a portion of the video game information is rendered in three dimensions.

17. A processor-readable storage medium, wherein the storage medium is not a signal, the storage medium storing processor-executable instructions that, when executed by a processor, cause the processor to perform the steps of:

mapping coordinates of each of a first eye and a second eye of a viewer to a world space coordinate system;

refining the mapped coordinates to account for a distance of the viewer from a display device;

generating, from default data indicative of a default image from a default virtual camera;

first data indicative of a first image from a first virtual camera having a location determined as a function of the mapped coordinates of the first eye; and

second data indicative of a second image from a second virtual camera have a location determined as a function of the mapped coordinates of the second eye, wherein;

a viewing angle associated with the first virtual camera is offset, in accordance with a first offset, from a viewing angle associated with the default virtual camera;

a viewing angle associated with the second virtual camera is offset, in accordance with a second offset, from a viewing angle associated with the default virtual camera;

a focal distance of the first virtual camera is infinity; and

a focal distance of the second virtual camera is infinity;

generating a composite image comprising the first image and the second image; and

rendering the composite image, wherein the composite image is perceivable in three dimensions.

18. The processor-readable storage medium of claim 17, wherein the information is indicative of video game information.

19. The processor-readable storage medium of claim 17, wherein the viewing angle associated with the first virtual camera is parallel with the viewing angle associated with the second virtual camera.

20. The processor-readable storage medium of claim 17, storing further processor-executable instructions for mapping a real world coordinate to a game coordinate to determine the first offset and the second offset.