TY - GEN
T1 - A weighted low-rank matrix approximation based template matching scheme for inter-frame prediction
AU - Huang, Zhi Long
AU - Hsiao, Hsu-Feng
PY - 2012
Y1 - 2012
N2 - In the field of video coding, inter-frame prediction plays an important role in improving compression efficiency. This task is achieved by finding a predictor for each block such that the residual data can be close to zero as much as possible. For recent video coding standards, motion vectors are required for a decoder to locate the predictors during video reconstruction. Block matching algorithms are usually utilized in the stage of motion estimation to find such motion vectors. For decoderside inter-frame predictive coding, proper templates are defined and template matching algorithms are used to produce a predictor for each block such that the overhead information to transmit motion vectors can be avoided. However, the conventional criteria of either block matching or template matching algorithms may lead to the generation of worse predictors. To enhance coding efficiency, a weighted low-rank matrix approximation approach for decoder-side inter-frame prediction is proposed in this paper. By finding dominating block candidates as well as their corresponding importance factors, a predictor for each block is formed. Together with mode decision, the coder can switch to a better mode between the motion compensation by block matching and the proposed template matching scheme which can operate at decoder side.
AB - In the field of video coding, inter-frame prediction plays an important role in improving compression efficiency. This task is achieved by finding a predictor for each block such that the residual data can be close to zero as much as possible. For recent video coding standards, motion vectors are required for a decoder to locate the predictors during video reconstruction. Block matching algorithms are usually utilized in the stage of motion estimation to find such motion vectors. For decoderside inter-frame predictive coding, proper templates are defined and template matching algorithms are used to produce a predictor for each block such that the overhead information to transmit motion vectors can be avoided. However, the conventional criteria of either block matching or template matching algorithms may lead to the generation of worse predictors. To enhance coding efficiency, a weighted low-rank matrix approximation approach for decoder-side inter-frame prediction is proposed in this paper. By finding dominating block candidates as well as their corresponding importance factors, a predictor for each block is formed. Together with mode decision, the coder can switch to a better mode between the motion compensation by block matching and the proposed template matching scheme which can operate at decoder side.
UR - http://www.scopus.com/inward/record.url?scp=84872386984&partnerID=8YFLogxK
U2 - 10.1109/ICSES.2012.6382248
DO - 10.1109/ICSES.2012.6382248
M3 - Conference contribution
AN - SCOPUS:84872386984
SN - 9781467317092
T3 - 2012 International Conference on Signals and Electronic Systems, ICSES 2012 - The Conference Proceedings
BT - 2012 International Conference on Signals and Electronic Systems, ICSES 2012 - The Conference Proceedings
T2 - 2012 International Conference on Signals and Electronic Systems, ICSES 2012
Y2 - 18 September 2012 through 21 September 2012
ER -