Television – Bandwidth reduction system – Data rate reduction
Patent
1995-05-01
1997-08-05
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348416, 348415, 348411, 348699, 382 16, H04N 718
Patent
active
056547625
ABSTRACT:
Block matching for picture motion estimation uses Gray codes, and preferably a new Hamming-2 Gray code where the bit pattern changes by only one bit for each step in the Gray code count sequence with the additional condition that all other codes are at least two bits different if not adjacent in the count sequence. The pixels for a reference block from a first picture frame and the pixels for a corresponding block within a search area of the next picture frame are each quantized and then converted to an appropriate Gray code. The Gray codes for corresponding pixels are compared to determine whether they are equal or adjacent to each other. If there is adjacency or equality a match signal is generated for that pixel which is tallied. The total tally for each reference block position within the search area is determined, with the maximum tally indicating a match between blocks from which picture motion estimation may be determined.
REFERENCES:
patent: 4409623 (1983-10-01), Kobayashi et al.
patent: 4533957 (1985-08-01), Iinuma
patent: 4652935 (1987-03-01), Endoh et al.
patent: 4788598 (1988-11-01), Ochi et al.
patent: 4894713 (1990-01-01), Delogne et al.
patent: 4918739 (1990-04-01), Lorente et al.
patent: 5043807 (1991-08-01), Rabii
patent: 5142590 (1992-08-01), Carpenter et al.
patent: 5301284 (1994-04-01), Estes et al.
patent: 5442458 (1995-08-01), Rabbani et al.
"Subband Image Coding" by Editor John W. Woods, The Kluwer International Series in Engineering and Computer Science.
Hu Shane Ching-Feng
Slavin Keith R.
Chin Tommy P.
Gray Francis I.
Rao Anand S.
Tektronix Inc.
LandOfFree
Block matching for picture motion estimation using gray codes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Block matching for picture motion estimation using gray codes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Block matching for picture motion estimation using gray codes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1078355