Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2005-05-03
2005-05-03
Jankus, Almis R (Department: 2671)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
C345S420000, C345S660000
Reexamination Certificate
active
06888547
ABSTRACT:
Vertices of a polygon model M0are sorted into those on which rays are projected (visible-surface vertices M01) and those on which rays are not projected (hidden-surface vertices M02) based on normal vectors V2of the vertices of the polygon model M0and a light source vector V1, and shadow models (shadow volumes) M1, M2, M3are generated by moving the hidden-surface vertices in a direction of the light source vector V1. Shadow images can be easily created by applying stenciling to these shadow models.
REFERENCES:
patent: 4819192 (1989-04-01), Kuragano et al.
patent: 5043922 (1991-08-01), Matsumoto
patent: 5422986 (1995-06-01), Neely
patent: 5870098 (1999-02-01), Gardiner
patent: 6356264 (2002-03-01), Yasui et al.
patent: 6384822 (2002-05-01), Bilodeau et al.
patent: 0916374 (1999-05-01), None
patent: 0948978 (1999-10-01), None
patent: 11-025286 (1999-01-01), None
patent: 11-175752 (1999-07-01), None
patent: 11-306384 (1999-11-01), None
patent: 2000-076479 (2000-03-01), None
patent: 2001-307128 (2001-11-01), None
patent: 2002-024854 (2002-01-01), None
patent: 2002-042161 (2002-02-01), None
Watt et al., “Advanced Animation and Rendering Techniques Theory and Practice”, 1992, Addison-Wesley, pp. 3-9, 155-166.*
Crow, “Shadow Algorithms for Computer Graphics”, Siggraph 1977.*
Atherton et al., “Polygon Shadow Generation”.*
Chrysanthou et al., “Shadow Volume BSP Trees for Computation of Shadows in Dynamic Scenes”, 1995, ACM.*
“Computer Graphics” Foley, J.D., et al., Addison-Wesley, Oct. 23, 1990, pp. 745-753.
“A General Version of Crow's Shadow Volumes” Bergeron, P., IEEE Computer Graphics and Applications, IEEE Inc. New York, vol. 6, No. 9, Sep. 1, 1986, pp. 17-28.
A print of a screen of http://www.opengl.org/developers/code/mjktips/rts/.
A print of a screen of http://cat.zero.ad.jp/-zak54165/TechMemo/RegidBodyMemo/RegidBodyMemo01.htm#StencilBuf.
Higashiyama Makoto
Nagayama Kentaro
Shinkai Tatsuya
Jankus Almis R
Jordan and Hamburg LLP
Konami Corporation
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