Open GL

• US 20040179262A1
• Filed: 11/25/2003
• Published: 09/16/2004
• Est. Priority Date: 11/25/2002
• Status: Abandoned Application

• Current Assignee: dynamic digital depth Research Pty Ltd
• Original Assignee: dynamic digital depth Research Pty Ltd
• Inventors: Sanderson, Hugh Ross, Flack, Julien Charles, Harman, Philip Victor
• Application Number:
  US10/720,687
• Publication Number:
  US 20040179262A1
• Time in Patent Office: Days
• US Class Current: 359/462
• CPC Class Codes: H04N 13/10 Processing, recording or transmission of stereoscopic or multi-view image signals
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/317 using slanted parallax optics

Abstract

A method of generating images suitable for use with a multi-view stereoscopic display including the steps of intercepting data passed from an application to an application programming interface, the data representing a scene or object to be displayed on the display; processing the data to render multiple views of the scene or object; creating modified data by modifying the intercepted data to represent the multiple views; and passing the modified data to the application programming interface.

Claims

1. A method of generating images suitable for use with a multi-view stereoscopic display including the steps of:

intercepting data passed from an application to an application programming interface, said data representing a scene or object to be displayed on said display, and wherein said data is intercepted by looking up an internal symbol table to determine a memory location for an application programme interface function, storing a modified library into memory, and redirecting application commands to said memory location to said modified library;

processing said data to render multiple views of said scene or object;

creating modified data by modifying said intercepted data to represent said multiple views;

passing said modified data to said application programming interface.

2. A method as claimed in claim 1 wherein processing of said data includes the steps of:

identifying replayable sequences of commands and processing said commands with valid sequences to minimize command flushing stages required.

3. A method as claimed in claim 1 wherein said multiple views are composed into a composite image

4. A method as claimed in claim 3 wherein said composite image is formed by mapping said multiple views to pixels on said display by:

5. A method as claimed in claim 4 wherein N is rounded to a nearest integer value.

6. A method as claimed in claim 4 wherein image data for each pixel is determined by a weighted average of views having closest integer values to N.

7. A method as claimed in claim 4 further including the step of generating a modulation mask based on characteristics of said display, wherein

8. A system for creating images suitable for use with a multi-view autostereoscopic display including:

a capture means for intercepting 3D geometric primitives and associated characteristics passed between an application and an application programming interface;

a view generation means for imaging said 3D geometric primitives and said associated characteristics from multiple distinct viewing positions;

a mask calculation means for determining a relative contribution of each view based on characteristics of an associated lenticular lens array; and

an accumulation means for combining said views with said masks to generate a composite 3D image.

9. A system as claimed in claim 8 wherein said capture means intercepts said primitives an characteristics by:

looking up an internal symbol table to determine a memory location for an application programme interface function;

storing a modified library into memory; and

redirecting application commands to said memory location to said modified library.

10. A system as claimed in claim 8 wherein said accumulation means includes:

a view calculator to determine which said view is assigned to each pixel of said 3D image.

11. A system as claimed in claim 10 wherein said view calculator determines said view by:

12. A system as claimed in claim 8 wherein said mask calculation means determines a fractional proportion of each said view for each pixel of said 3D image.

13. A system as claimed in claim 8 wherein characteristics of said lens array are determined by:

14. A system as claimed in claim 13 wherein said 3D image is traversed in a raster scan to form said composite image.

15. A system as claimed in claim 14 wherein a first position of said raster scan is initialized to an arbitrary view number.

16. A system as claimed in claim 15 wherein for each subsequent colour component in a same row of said raster scan a previous view is incremented by V_c.

17. A system as claimed in claim 16 wherein as said raster scan advances to a new row the view is incremented by V_r.