Method and device for variable complexity decoding of motion-com

Details Method and device for variable complexity decoding of motion-com Method and device for variable complexity decoding of motion-com

1999-08-12

2000-12-26

Britton, Howard

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

382250, 708402, H04N 730, G06F 1714

Patent

active

061670928

ABSTRACT:
A method and device compute the inverse discrete cosine transform (IDCT) in a block based motion compensated digital video decoder, such that the computational complexity is dependent on syntax cues from an input block, and the resulting overall complexity is greatly reduced on average. The method and device provide a means for selecting a set of pruned IDCT algorithms based on the statistics of generic coded video data. The classification of input IDCT blocks uses the last non-zero coefficient obtained as a by-product of decompression and dequantization. The mapping from the last non-zero coefficient to a corresponding set of separable one-dimensional IDCT algorithms is performed efficiently with the careful consideration of memory requirements, mapping complexity, and pruned IDCT-complexity tradeoffs.

REFERENCES:
patent: 5394349 (1995-02-01), Eddy
patent: 5452466 (1995-09-01), Fettweis
patent: 5767907 (1998-06-01), Pearlstein
patent: 5990958 (1999-11-01), Bheda et al.

Affiliated with

Also associated with

Rating

Method and device for variable complexity decoding of motion-com 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 device for variable complexity decoding of motion-com, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for variable complexity decoding of motion-com will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1003289