Image analysis – Image compression or coding – Including details of decompression
Patent
1995-04-18
1999-02-16
Johns, Andrew
Image analysis
Image compression or coding
Including details of decompression
382250, 382238, 348395, 348403, 358430, 358433, 364725, G06K 936, H04N 712, H04N 140, G06F 1714
Patent
active
058728660
ABSTRACT:
A decoding system stores frequently-occurring DCT coefficient blocks in a memory and stores pre-computed spatial domain kernels which correspond to the stored DCT coefficient blocks. The video system examines a block of DCT coefficients prior to computation of an inverse discrete cosine transform (IDCT) to determine whether the block is substantially similar to a stored frequently-occurring DCT coefficient block. If so, the spatial domain kernel corresponding to the frequently-occurring DCT block is utilized in the decoded picture, bypassing computation of the IDCT.
REFERENCES:
patent: 3918047 (1975-11-01), Denes
patent: 5144424 (1992-09-01), Savatier
patent: 5289577 (1994-02-01), Gonzales et al.
patent: 5315670 (1994-05-01), Shapiro
patent: 5357282 (1994-10-01), Lee
patent: 5371547 (1994-12-01), Siracusa et al.
patent: 5371611 (1994-12-01), Kato et al.
patent: 5379070 (1995-01-01), Retter et al.
patent: 5400075 (1995-03-01), Savatier
patent: 5450599 (1995-09-01), Horvath et al.
patent: 5452104 (1995-09-01), Lee
patent: 5481364 (1996-01-01), Ito
patent: 5502493 (1996-03-01), Meyer
patent: 5523847 (1996-06-01), Feig et al.
patent: 5543846 (1996-08-01), Yagasaki
patent: 5559557 (1996-09-01), Kato
patent: 5563928 (1996-10-01), Rostoker et al.
patent: 5576958 (1996-11-01), Kawakatsu et al.
Liu Yi
Strongin Geoffrey S.
Tucker Michael R.
Advanced Micro Devices , Inc.
Davis Monica S.
Johns Andrew
Koestner Ken J.
LandOfFree
Method and apparatus for improved video decompression by predete 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 improved video decompression by predete, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for improved video decompression by predete will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2068981