Method and apparatus for concealing errors in a transmitted vide

Details Method and apparatus for concealing errors in a transmitted vide Method and apparatus for concealing errors in a transmitted vide

1996-12-23

1999-08-10

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

3488451, H04N 712

Patent

active

059366745

ABSTRACT:
For concealing channel errors in an image signal divided into a multiplicity of blocks of M.times.N pixels, M and N being positive integers, a lost region is detected, wherein the lost region is of a polygonal form having a plurality of sides and includes one or more connected lost blocks, each lost block containing a channel error. And then, a reference region of pixels including a plurality of groups of first and second pixels, each group of first pixels being adjacent to a side of the lost region and each group of second pixels being adjacent to a first group of pixels is found. Thereafter, edge pixels having non-zero valued edge magnitudes, an edge magnitude for a pixel representing differences between pixels residing adjacent to the pixel among pixels within the reference region are determined. And each edge point representing an edge pixel having a largest edge magnitude among the edge pixels included in groups of first and second pixels for a side of the lost region is detected. Thereafter, the channel errors of the lost region are rectified by compensating pixels within the lost region based on the edge points and the pixels of the reference region.

REFERENCES:
patent: 4807033 (1989-02-01), Keesen et al.
patent: 5353059 (1994-10-01), Lawlor et al.
patent: 5737022 (1998-04-01), Yamaguchi et al.

Affiliated with

Also associated with

Rating

Method and apparatus for concealing errors in a transmitted vide 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 concealing errors in a transmitted vide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for concealing errors in a transmitted vide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1125153