Computer graphics processing and selective visual display system – Computer graphics processing – Graph generating
Patent
1996-01-26
1998-09-22
Zimmerman, Mark K.
Computer graphics processing and selective visual display system
Computer graphics processing
Graph generating
345441, G06T 1140
Patent
active
058121412
ABSTRACT:
The present invention provides a method and apparatus for computer graphics system users or other functions in a graphical display system, to trade off object image rendering speed for object image texture quality. This trade-off is accomplished by providing control signals to the adaptive texture mapping controller which indicate the level of texture quality that the user or other function desires. Upon recognizing these control signals, the adaptive texture mapping controller selects a computation method to be used in generating pixel values necessary to provide the desired level of image texture quality. An appropriate method is determined for calculating the end points of span sections of scan lines to be used for the display, based upon a function of the knot parameters which correspond to the vertices which describe each edge of a polygon section of the projected object and one or more of the control signals provided, and then an appropriate interpolation method is determined for calculating the pixel values for pixels on each span chosen. The selected interpolation method is based on a function of the span end points and one or more of the control signals provided. These functions of the distance between knot parameters on a polygon edge or the distance between end points of a span can be mathematical functions of pairs of knot parameters or pairs of end points respectively.
REFERENCES:
patent: 4835532 (1989-05-01), Fant
patent: 4855934 (1989-08-01), Robinson
patent: 5097427 (1992-03-01), Lathrop et al.
patent: 5109481 (1992-04-01), Lathrop et al.
patent: 5179638 (1993-01-01), Dawson et al.
patent: 5214753 (1993-05-01), Lee et al.
patent: 5253339 (1993-10-01), Wells et al.
patent: 5255352 (1993-10-01), Falk
patent: 5307450 (1994-04-01), Grossman
patent: 5345541 (1994-09-01), Kelley et al.
Wolberg, George; Digital Image Warping; 1990; pp. 189-204.
"Interpolation for Polygon Texture Mapping & Shading", Paul S. Heckbert, et al. Dept. of Electrical Engineering & Computer Science, University of California Berkeley, pp. 1-11, 1991.
Grand Prix, Supplement Technique, 1991, Tetbury UK, pp. 1-20.
Computer Graphics Principles and Practice by J. Foley et al., 1990, pp. 741-747, 806-807 and 820-826.
Survey of Texture Mapping by P. Heckbert, IEEE CG&A 1986, pp. 56-67.
Texture and Reflection in Computer Generated Images by J. Blinn et al., Communications of the ACM, Oct. 1976, v. 19, No. 10, pp. 542-547.
Kamen Yakov
Sabada Uma
Sun Microsystems Inc.
Zimmerman Mark K.
LandOfFree
Method and apparatus for an adaptive texture mapping controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for an adaptive texture mapping controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for an adaptive texture mapping controller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1626842