Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2005-06-30
2009-06-02
Pappas, Peter-Anthony (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
Reexamination Certificate
active
07542038
ABSTRACT:
An apparatus and method for soft shadow calculations, the method including dividing an area light source into a patch of points, obtaining a packet of points on a surface that is subject to illumination by the patch of points, determining a form-factor value for each of the points in the packet of points; and simultaneously performing adaptive soft shadow calculations for each of the points in the packet based on the point in the packet having the greatest form-factor.
REFERENCES:
patent: 5299298 (1994-03-01), Elmquist et al.
patent: 5313568 (1994-05-01), Wallace et al.
patent: 5546515 (1996-08-01), Mochizuki
patent: 5613048 (1997-03-01), Chen et al.
patent: 6252608 (2001-06-01), Snyder et al.
patent: 6496597 (2002-12-01), Tampieri
patent: 6850209 (2005-02-01), Mankins et al.
patent: 7015908 (2006-03-01), Nakagawa et al.
patent: 7256796 (2007-08-01), Bastos et al.
patent: 7301538 (2007-11-01), Buyanovskiy
patent: 7385604 (2008-06-01), Bastos
patent: 7423645 (2008-09-01), Dougherty et al.
patent: 2007/0159478 (2007-07-01), Choi et al.
Debelov et al. Light Mesh: Soft Shadows as Interpolation of Visibility. Future Generation Computer Systems. vol. 20. Issue 8. Nov. 2004.
Develov et al. Light Meshes—Original Approach to Produce Soft Shadows in Ray Tracing. Proceedings of the International Conference on Computational Science—Part II. 2002.
Parker et al. Single Sample Soft Shadows. 1998.
Jensen et al. Efficiently Rendering Shadows Using the Photon Map. Proceedings of Compugraphics '95. Dec. 1995.
Lischinski et al. Bounds and Error Estimates for Radiosity. Proceedings of the 21st Annual Conference on Computer Graphics and Interactive Techniques. 1994.
Wallace et al. A Ray Tracing Algorithm for Progressive Radiosity. ACM SIGGRAPH Computer Graphics. vol. 23. Issue 3. Jul. 1989.
Foley et al. Computer Graphics: Principles and Practice. Addison-Wesley Pub. Co. 1997. pp. 800-804.
Moiseenko Yuri
Sevastianov Igor
Soupikov Alexei M.
Buckley Maschoff & Talwalkar LLC
Intel Corporation
Pappas Peter-Anthony
LandOfFree
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