DocumentCode :
2577587
Title :
Fast decoder side motion vector derivation for inter frame video coding
Author :
Kamp, Steffen ; Bross, Benjamin ; Wien, Mathias
Author_Institution :
Inst. fur Nachrichtentechnik, RWTH Aachen Univ., Aachen, Germany
fYear :
2009
fDate :
6-8 May 2009
Firstpage :
1
Lastpage :
4
Abstract :
Decoder-side motion vector derivation (DMVD) using template matching has been shown to improve coding efficiency of H.264/AVC based video coding. Instead of explicitly coding motion vectors into the bitstream, the decoder performs motion estimation in order to derive the motion vector used for motion compensated prediction. In previous works, DMVD was performed using a full template matching search in a limited search range. In this paper, a candidate based fast search algorithm replaces the full search. While the complexity reduction especially for the decoder is quite significant, the coding efficiency remains comparable. While for the full search algorithm BD-bitrate savings of 7.4% averaged over CIF and HD sequences according to the VCEG common conditions for IPPP high profile are observed, the proposed fast search achieves bitrate reductions of up to 7.5% on average. By further omitting sub-pel refinement, average savings observed for CIF and HD are still up to 7%.
Keywords :
decoding; image matching; motion compensation; motion estimation; prediction theory; video coding; CIF sequences; H.264/AVC; HD sequences; IPPP high profile; VCEG common conditions; bitrate reductions; candidate based fast search algorithm; coding efficiency; complexity reduction; decoder side motion vector derivation; interframe video coding; motion compensated prediction; motion estimation; template matching; Automatic voltage control; Bit rate; Decoding; High definition video; Image sequences; Motion compensation; Motion estimation; Partitioning algorithms; Video coding; Video sequences; H.264/AVC; Video coding; fast algorithms; inter frame prediction; motion compensation; template matching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Picture Coding Symposium, 2009. PCS 2009
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4244-4593-6
Electronic_ISBN :
978-1-4244-4594-3
Type :
conf
DOI :
10.1109/PCS.2009.5167453
Filename :
5167453
Link To Document :
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