TY - GEN
T1 - An improved inter frame error concealment in H.264/AVC
AU - Wang, Jun
AU - Wang, Lei
AU - Li, Shen
AU - Ikenaga, Takeshi
AU - Goto, Satoshi
PY - 2007/12/1
Y1 - 2007/12/1
N2 - Transmission of compressed video over error prone channels may result in packet losses or errors, which can significantly degrade the image quality. Aimed this problem, non-normative error concealment (EC) is recommended in H.264/AVC to recover the lost image. By analyzing of non-normative inter EC, this paper focused on improvement of it. Firstly, since the "guessed"/ recovered MV (motion vector) in existing EC is not so close to the real MV, a refined MV recovery is proposed to get a more accurate "guessed" MV. Secondly an improved MV selection criterion (side matching criterion) is proposed, which is trying to "guess"/approach a lost MB (macroblock)'s real/original side match distortion, instead of "guess"/approach value 0 in traditional inter EC. In addition, for MV refinement scheme, inspired by MV searching in motion estimation, we adopt a diamond searching for MV recovery. Both objective and subjective image quality evaluation in experiments show that our proposal achieves a better image recovery compared with non-normative inter EC.
AB - Transmission of compressed video over error prone channels may result in packet losses or errors, which can significantly degrade the image quality. Aimed this problem, non-normative error concealment (EC) is recommended in H.264/AVC to recover the lost image. By analyzing of non-normative inter EC, this paper focused on improvement of it. Firstly, since the "guessed"/ recovered MV (motion vector) in existing EC is not so close to the real MV, a refined MV recovery is proposed to get a more accurate "guessed" MV. Secondly an improved MV selection criterion (side matching criterion) is proposed, which is trying to "guess"/approach a lost MB (macroblock)'s real/original side match distortion, instead of "guess"/approach value 0 in traditional inter EC. In addition, for MV refinement scheme, inspired by MV searching in motion estimation, we adopt a diamond searching for MV recovery. Both objective and subjective image quality evaluation in experiments show that our proposal achieves a better image recovery compared with non-normative inter EC.
UR - http://www.scopus.com/inward/record.url?scp=48349099589&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=48349099589&partnerID=8YFLogxK
U2 - 10.1109/ICASIC.2007.4415750
DO - 10.1109/ICASIC.2007.4415750
M3 - Conference contribution
AN - SCOPUS:48349099589
SN - 1424411327
SN - 9781424411320
T3 - ASICON 2007 - 2007 7th International Conference on ASIC Proceeding
SP - 794
EP - 797
BT - ASICON 2007 - 2007 7th International Conference on ASIC Proceeding
T2 - 2007 7th International Conference on ASIC, ASICON 2007
Y2 - 26 October 2007 through 29 October 2007
ER -