Data structure for texture data, computer program product,...

Details Data structure for texture data, computer program product,... Data structure for texture data, computer program product,...

2007-03-20

2007-03-20

Tung, Kee M. (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S426000, C345S552000, C345S584000, C345S589000

Reexamination Certificate

active

10361565

ABSTRACT:
The present invention has as an object to propose a texture mapping method which enables smooth shading, and is also appropriate for conserving memory resources. In order to achieve this object, in this invention, data regions with different color tones are set so as to form density gradients in the U coordinate direction and in the V coordinate direction of the texture data. If the brightness of the surface of the object to which texture mapping is performed is I, then among the coordinates to be read to access texture data, the U coordinate is calculated as U=a*I+b, and the V coordinate is determined from V=d. The value of the dynamic variable d can be set appropriately according to the application. Because the texture data is such that color tone density gradients are formed in two mutually orthogonal directions, smooth shading is possible, and a plurality of texture memory areas can be consolidated to conserve memory usage.

REFERENCES:
patent: 4609993 (1986-09-01), Shimizu
patent: 4835712 (1989-05-01), Drebin et al.
patent: 4930010 (1990-05-01), MacDonald
patent: 5469274 (1995-11-01), Iwasaki et al.
patent: 5489274 (1996-02-01), Chu et al.
patent: 5598185 (1997-01-01), Holmgren
patent: 5974189 (1999-10-01), Nicponski
patent: 6078312 (2000-06-01), Liebenow
patent: 6611609 (2003-08-01), Zhu
patent: 6747660 (2004-06-01), Olano et al.
patent: 6751339 (2004-06-01), Windle et al.
patent: 6850242 (2005-02-01), Saito
patent: 2002/0060684 (2002-05-01), Alcorn et al.
patent: 2003/0034981 (2003-02-01), Wada
Heckbert, P., “Survey of Texture Mapping”, IEEE Computer Graphics and Applications, Nov. 1986, pp. 56-57.
Heckbert, P. S., “Fundamentals of Texture Mapping and Image Warping,” Master's Thesis, Dept. of Electrical Engineering and Comp. Science, UC Berkeley, CA, Jun. 17, 1989, p. 5.

Affiliated with

Also associated with

Rating

Data structure for texture data, computer program product,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data structure for texture data, computer program product,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data structure for texture data, computer program product,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3783255