TY - GEN
T1 - Error concealment using refined boundary matching algorithm
AU - Chen, Tao
AU - Zhang, Ximin
AU - Shi, Yun Qing
PY - 2003
Y1 - 2003
N2 - An adaptive technique is proposed for temporal error concealment based on the boundary matching algorithm. Previous approaches usually estimate only one motion vector for a damaged macroblock by minimizing the boundary difference. This may generate edge fragmentation, object deformation, and other noticeable artifacts, especially in damaged areas involving non-homogeneous motion. We present a framework of using various motion vectors for different regions within a damaged macroblock. The damaged macroblock is divided into small blocks, and each of the blocks is then concealed with an estimated motion vector. The estimation of motion vectors is independent, but constrained, in order to make it robust for concealment in different areas. A new matching criterion is developed in order to take into account possible edges on block boundaries. The advantage of the new algorithm has been shown by simulations.
AB - An adaptive technique is proposed for temporal error concealment based on the boundary matching algorithm. Previous approaches usually estimate only one motion vector for a damaged macroblock by minimizing the boundary difference. This may generate edge fragmentation, object deformation, and other noticeable artifacts, especially in damaged areas involving non-homogeneous motion. We present a framework of using various motion vectors for different regions within a damaged macroblock. The damaged macroblock is divided into small blocks, and each of the blocks is then concealed with an estimated motion vector. The estimation of motion vectors is independent, but constrained, in order to make it robust for concealment in different areas. A new matching criterion is developed in order to take into account possible edges on block boundaries. The advantage of the new algorithm has been shown by simulations.
KW - Boundary matching
KW - Error concealment
UR - http://www.scopus.com/inward/record.url?scp=79952519329&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952519329&partnerID=8YFLogxK
U2 - 10.1109/ITRE.2003.1270571
DO - 10.1109/ITRE.2003.1270571
M3 - Conference contribution
AN - SCOPUS:79952519329
SN - 0780377249
SN - 9780780377240
T3 - Proceedings, ITRE 2003 - International Conference on Information Technology: Research and Education
SP - 55
EP - 59
BT - Proceedings, ITRE 2003 - International Conference on Information Technology
T2 - 2003 International Conference on Information Technology: Research and Education, ITRE 2003
Y2 - 11 August 2003 through 13 August 2003
ER -