Volume clipping in computer 3D graphics

Computer graphics processing and selective visual display system – Computer graphics processing – Attributes

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C345S426000

Reexamination Certificate

active

06967662

ABSTRACT:
A method and apparatus are provided for clipping modifier volumes in a 3-dimensional computer graphics generating system. Objects are represented as a set of planar polygons. An indication is then provided as to which of the polygons form modifier volumes. A determination is made as to which polygon's modifier volume intersect a clipping plane (4). Further polygons are then generated on the clipping plane within the intersections of the polygons of the modifier volume with the clipping plane and these are inserted into the set of planar polygons. The portions of the polygons which are determined to lie in front of the clipping plane are then discarded.

REFERENCES:
patent: 5586234 (1996-12-01), Sakuraba et al.
patent: 5870098 (1999-02-01), Gardiner
patent: 6025853 (2000-02-01), Baldwin
patent: 6072497 (2000-06-01), Lichtenbelt et al.
patent: 6230177 (2001-05-01), Gossett et al.
patent: 6236404 (2001-05-01), Iimura et al.
patent: 6384822 (2002-05-01), Bilodeau et al.
patent: 6437782 (2002-08-01), Pieragostini et al.
patent: 6542153 (2003-04-01), Liu et al.
patent: 6760024 (2004-07-01), Lokovic et al.
patent: 0 725 365 (1996-08-01), None
patent: 0 725 366 (1996-08-01), None
patent: 0 890 925 (1999-01-01), None
Great Britain Application No. GB 0103194.7, Search Report, Aug. 9, 2001 (2 pages).
PCT Application No. PCT/GB02/05458, International Search Report, May 2, 2003 (4 pages).
Batagelo, H.C., et al; “Real-Time Shadow Generation Using BSP Trees and Stencil Buffers”, Proceedings. XII Brazilian Symposium on Computer Graphics and Image Processing, 1999, pp. 93-102.
Crow, Franklin; “Shadow Algorithms for Computer Graphics”, Siggraph, Jul. 20-22, 1977, Sand Jose, California, pp. 242-247.
Watt & Watt; Extract from “Advanced Animation and Rendering Techniques”, ISBN, 0-201-54412-1, pp. 158-163.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Volume clipping in computer 3D graphics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Volume clipping in computer 3D graphics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Volume clipping in computer 3D graphics will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3517374

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.