Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2007-10-09
2007-10-09
Chauhan, Ulka (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
Reexamination Certificate
active
10959474
ABSTRACT:
A method and system for rendering bicubic surfaces whereby at least a portion of the bicubic surfaces are defined by sixteen control points and bounded by four boundary curves, and each boundary curve is formed by boundary box of line segments formed between four of the control points. The method and system of include transforming only the control points of the surface given a view of the object, rather than points across the entire bicubic surface. Next, a pair of orthogonal boundary curves to process is selected. After the boundary curves have been selected, each of the curves is iteratively subdivided, wherein two new curves are generated with each subdivision. The subdivision of each of the curves is terminated when the curves satisfy a flatness threshold expressed in screen coordinates, whereby the number of computations required to render the object is minimized.
REFERENCES:
patent: 5261029 (1993-11-01), Abi-Ezzi et al.
patent: 5377320 (1994-12-01), Abi-Ezzi et al.
patent: 5428718 (1995-06-01), Peterson et al.
patent: 5488684 (1996-01-01), Gharachorloo et al.
patent: 5771341 (1998-06-01), Huddy
patent: 5903273 (1999-05-01), Mochizuki et al.
patent: 6100894 (2000-08-01), Goel
patent: 6256038 (2001-07-01), Krishnamurthy
patent: 6437795 (2002-08-01), Brown
patent: 6563501 (2003-05-01), Sfarti
patent: 2004/0227755 (2004-11-01), Sfarti
patent: 2006/0125824 (2006-06-01), Sfarti
Jeffrey M. Lane, Loren C. Carpenter, Turner Whitted, James F. Blinn, “Scan Line Methods for Displaying Parametrically Defined Surfaces,” Jan. 1980, Communications of the ACM, vol. 23, No. 1, p. 23-34.
Alyn Rockwood, Kurt Heaton, Tom Davis, “Real-Time Rendering Of Trimmed Surfaces,” Jul. 1989, ACM SIGGRAPH Computer Graphics, vol. 23 No. 3, p. 107-116.
Fuhua Cheng, “Estimating Subdivision Depths for Rational Curves and Surfaces,” Apr. 1992, ACM Transactions on Graphics, vol. 11, No. 2, p. 140-151.
Foley, James et al., “Computer Graphics: Principles and Practice,” 2d Edition, Addison-Wesley Publishing Company, 1990, pp. 511-527.
Chauhan Ulka
Repko Jason M
Strategic Patent Group P.C.
LandOfFree
Bicubic surface rendering does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bicubic surface rendering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bicubic surface rendering will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3871315