TY - GEN
T1 - Low-complexity rate-distortion optimization algorithms for HEVC intra prediction
AU - Sheng, Zhe
AU - Zhou, Dajiang
AU - Sun, Heming
AU - Goto, Satoshi
PY - 2014/2/7
Y1 - 2014/2/7
N2 - HEVC achieves a better coding efficiency relative to prior standards, but also involves dramatically increased complexity. The complexity increase for intra prediction is especially intensive due to a highly flexible quad-tree coding structure and a large number of prediction modes. The encoder employs rate-distortion optimization (RDO) to select the optimal coding mode. And RDO takes a great portion of intra encoding complexity.Moreover HEVC has stronger dependency on RDO than H.264/AVC. To reduce the computational complexity and to implement a real-time system,this paper presents two low-complexity RDO algorithms for HEVC intra prediction. The structure of RDO is simplified by the proposed rate and distortion estimators, and some hardware-unfriendly modules are facilitated. Compared with the original RDO procedure, the two proposed algorithms reduce RDO time by 46% and 64% respectively with acceptable coding efficiency loss.
AB - HEVC achieves a better coding efficiency relative to prior standards, but also involves dramatically increased complexity. The complexity increase for intra prediction is especially intensive due to a highly flexible quad-tree coding structure and a large number of prediction modes. The encoder employs rate-distortion optimization (RDO) to select the optimal coding mode. And RDO takes a great portion of intra encoding complexity.Moreover HEVC has stronger dependency on RDO than H.264/AVC. To reduce the computational complexity and to implement a real-time system,this paper presents two low-complexity RDO algorithms for HEVC intra prediction. The structure of RDO is simplified by the proposed rate and distortion estimators, and some hardware-unfriendly modules are facilitated. Compared with the original RDO procedure, the two proposed algorithms reduce RDO time by 46% and 64% respectively with acceptable coding efficiency loss.
KW - HEVC
KW - RDO
KW - intra prediction
KW - video coding
UR - http://www.scopus.com/inward/record.url?scp=84893466729&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893466729&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-04114-8_46
DO - 10.1007/978-3-319-04114-8_46
M3 - Conference contribution
AN - SCOPUS:84893466729
SN - 9783319041131
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 541
EP - 552
BT - MultiMedia Modeling - 20th Anniversary International Conference, MMM 2014, Proceedings
T2 - 20th Anniversary International Conference on MultiMedia Modeling, MMM 2014
Y2 - 6 January 2014 through 10 January 2014
ER -