Title :
High performance error concealment algorithm by motion vector refinement for MPEG-4 video
Author :
Chi, Ming-Chieh ; Chen, Mei-Juan ; Liu, Jia-Hwa ; Hsu, Ching-Ting
Author_Institution :
Dept. of Electr. Eng., Nat. Dong Hwa Univ., Taiwan
Abstract :
A new error concealment algorithm is proposed using recursive motion vector refinement. The proposed method utilizes the top/bottom motion vectors of lost macroblocks in current and reference frames and refines motion vectors recursively. Simulation results based on the MPEG-4 codec present a superior subjective and objective performance of the proposed technique compared with conventional temporal concealment techniques.
Keywords :
data compression; image motion analysis; video codecs; video coding; MPEG-4 codec; MPEG-4 video; error concealment algorithm; lost macroblocks; recursive motion vector refinement; reference frames; temporal concealment techniques; video compression; Automatic repeat request; Codecs; Data communication; Decoding; Error correction; Forward error correction; MPEG 4 Standard; Motion estimation; Transform coding; Video compression;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465232
