US 9,813,704 B2
Lossless image and video compression
Zhouye Gu, Singapore (SG); Weisi Lin, Singapore (SG); Bu Sung Lee, Singapore (SG); and Chiew Tong Lau, Singapore (SG)
Appl. No. 14/355,260
Filed by Nanyang Technological University, Singapore (SG)
PCT Filed Oct. 30, 2012, PCT No. PCT/SG2012/000408
§ 371(c)(1), (2) Date Apr. 30, 2014,
PCT Pub. No. WO2013/066267, PCT Pub. Date May 10, 2013.
Claims priority of provisional application 61/553,372, filed on Oct. 31, 2011.
Prior Publication US 2014/0301462 A1, Oct. 9, 2014
Int. Cl. H04N 19/13 (2014.01); H04N 19/593 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/91 (2014.01); H04N 19/44 (2014.01); H04N 19/463 (2014.01)
CPC H04N 19/00763 (2013.01) [H04N 19/13 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/44 (2014.11); H04N 19/593 (2014.11); H04N 19/91 (2014.11); H04N 19/463 (2014.11)] 22 Claims
OG exemplary drawing
1. A method of encoding an intra predicted residual block of an image for use in image or video compression, wherein the intra predicted residual block is associated with an intra prediction coding mode, the method comprising:
generating a plurality of residual error blocks from the intra predicted residual block, wherein the residual error blocks include residual data with different statistical characteristics from the residual data in the intra predicted residual block;
scanning and entropy coding each of the residual error blocks to produce a first plurality of bit streams and recording the lengths of each of the first plurality of bit streams;
scanning and entropy coding the intra predicted residual block to produce a second bit stream and recording the length of the second bit stream;
selecting the minimum length bit stream from the first plurality of bit streams and the second bit stream as the output coded bit stream of the intra predicted residual block.