Image analysis – Image compression or coding – Substantial processing of image in compressed form
Reexamination Certificate
2011-07-19
2011-07-19
Bali, Vikkram (Department: 2624)
Image analysis
Image compression or coding
Substantial processing of image in compressed form
C375S240000
Reexamination Certificate
active
07983498
ABSTRACT:
Systems and methods for representing low dynamic range data in compressed formats with a fixed size block allow low dynamic range data to be stored in less memory. The compressed formats use 8 bits per pixel to represent 24 bits of low dynamic range data for each pixel. The compressed format includes four or six endpoint values, a partition index that specifies a mask for each pair of the endpoint values, and an index for each pixel in the block. The indices are compressed to allow more bits for the endpoint values. Mode bits are included to distinguish between the different encodings and various blocks within a single compressed image may be encoded differently. Compressed low dynamic range values may be efficiently decompressed in hardware.
REFERENCES:
patent: 4626829 (1986-12-01), Hauck
patent: 4890249 (1989-12-01), Yen
patent: 4893187 (1990-01-01), Tsujimoto et al.
patent: 4947249 (1990-08-01), Kondo
patent: 5166987 (1992-11-01), Kageyama
patent: 6687304 (2004-02-01), Peng
patent: 6721003 (2004-04-01), Tsuruoka et al.
patent: 6895052 (2005-05-01), Hanamura et al.
patent: 7095783 (2006-08-01), Sotheran et al.
patent: 2008/0002895 (2008-01-01), Flavell et al.
patent: 2008/0055331 (2008-03-01), Lourcha et al.
Notice of Allowance, U.S. Appl. No. 11/614,039, dated Feb. 4, 2010.
Roimela et al., “High Dynamic Range Texture Compression,” ACM Transactions on Graphics, vol. 25, No. 3, pp. 698-706, Jul. 2008.
Munkberg et al., “High Dynamic Range Texture Compression for Graphics Hardware,” Association for Computing Machinery, Inc. pp. 698-706, Jul. 2006.
Ström et al., iPACKMAN: “High-Quality, Low-Complexity Texture Compression for Mobile Phones,” ACM Press, pp. 63-70, '05 Graphics Hardware 2005 (Co-located with SIGGRAPH 2005 Conference) Los Angeles, CA, USA-Jul. 30-31, 2005.
Bali Vikkram
Nvidia Corporation
Patterson & Sheridan, LLP.
Yeh Eueng-Nan
LandOfFree
Low dynamic range 3-channel color compression does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low dynamic range 3-channel color compression, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low dynamic range 3-channel color compression will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2714848