SYSTEM AND METHOD FOR STEREOSCOPIC 3-D RENDERING

• US 20130335402A1
• Filed: 06/14/2012
• Published: 12/19/2013
• Est. Priority Date: 06/14/2012
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: ERIKSSON, Marcus, GARDENFORS, Dan Zacharias
• Granted Patent: US 9,628,770 B2
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: H04N 13/128 Adjusting depth or disparity
• CPC Class Codes: H04N 13/144 for flicker reduction

Abstract

A method and system for rendering scenes in stereoscopic 3-D comprises identifying, or detecting, that a rate of change, of one or more elements of a scene to be rendered in stereoscopic 3-D, satisfies a criterion. The perceived depth of elements of the scene is then dynamically modified, and the scene is rendered. The method can reduce eye strain of a viewer of the scene, since the perceived difference in depth of objects or elements of the scene is reduced while the object is changing position or visibility dramatically.

Claims

1. A method of rendering in stereoscopic 3-D a scene having at least one element, the method comprising:

identifying that a rate of change of a first element of the scene satisfies a criterion;

dynamically modifying a perceived depth of a second element of the scene; and

rendering the scene.

2. The method of claim 1, wherein the first element comprises the second element.

3. The method of claim 1, wherein the rate of change comprises at least one of a rate of change of position and a rate of change of visibility.

4. The method of claim 1, wherein identifying that the rate of change satisfies the criterion, dynamically modifying the perceived depth, and rendering the scene occur substantially in real-time.

5. The method of claim 1, wherein dynamically modifying the perceived depth comprises dynamically modifying the perceived depth as a function of the rate of change.

6. The method of claim 1, wherein dynamically modifying the perceived depth comprises dynamically modifying a stereo pair comprising a left image and a right image of the second element.

7. The method of claim 6, wherein dynamically modifying the stereo pair comprises dynamically reducing binocular disparity between the left and right images.

8. The method of claim 7, wherein dynamically reducing binocular disparity comprises dynamically reducing binocular disparity as a function of the rate of change.

9. The method of claim 1, wherein dynamically modifying the perceived depth comprises dynamically reducing the perceived depth in relation to a zero-plane of a display.

10. A system for displaying content in stereoscopic 3-D, the system comprising:

a display, and

a processor configured to;

identify that a rate of change, of one a first element of a scene to be rendered in stereoscopic 3-D, satisfies a criterion,

dynamically modify a perceived depth of a second element of the scene, and

render the scene to the display.

11. The system of claim 10, wherein the first element comprises the second element.

12. The system of claim 10, wherein the rate of change comprises at least one of a rate of change of position and a rate of change of visibility.

13. The system of claim 10, wherein the processor is configured to identify that the rate of change satisfies the criterion, dynamically modify the perceived depth, and render the scene substantially in real-time.

14. The system of claim 10, wherein to dynamically modify the perceived depth the processor is configured to dynamically modify the perceived depth as a function of the rate of change.

15. The system of claim 10, wherein to dynamically modify the perceived depth the processor is configured to dynamically modify a stereo pair comprising a left image and a right image of the second element.

16. The system of claim 15, wherein to dynamically modify the stereo pair the processor is configured to dynamically reduce binocular disparity between the left and right.

17. The system of claim 16, wherein to dynamically binocular disparity the processor is configured to dynamically reduce binocular disparity as a function of the rate of change.

18. The system of claim 10, wherein to dynamically modify the perceived depth the processor is configured to dynamically reduce the perceived depth in relation to a zero-plane of a display.

19. A non-transitory computer-readable medium storing instructions, which, when executed, cause a processor to execute a method of rendering content in stereoscopic 3-D, the method comprising:

identifying that a rate of change, of a first element of a scene to be rendered in stereoscopic 3-D, satisfies a criterion;

dynamically reducing a perceived depth of a second element of the scene; and

rendering the scene.

20. The computer-readable medium of claim 19, wherein the first element comprises the second element.

21. The computer-readable medium of claim 19, wherein the rate of change comprises at least one of a rate of change of position and a rate of change of visibility.

22. The computer-readable medium of claim 19, wherein dynamically modifying the perceived depth comprises dynamically modifying the perceived depth as a function of the rate of change.

23. The computer-readable medium of claim 19, wherein dynamically modifying the perceived depth comprises dynamically modifying a stereo pair.

24. The computer-readable medium of claim 23, wherein dynamically modifying the stereo pair comprises dynamically reducing binocular disparity between the between left and right images of the stereo pair.

25. The computer-readable medium of claim 24, wherein dynamically reducing binocular disparity comprises reducing binocular disparity as a function of the rate of change.