Open AccessScalable Extension of HEVC for Flexible High‐Quality Digital Video Content Services
Author(s) -
Lee Hahyun,
Kang Jung Won,
Lee Jinho,
Choi Jin Soo,
Kim Jinwoong,
Sim Donggyu
Publication year - 2013
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.13.2013.0040
Subject(s) - computer science , scalability , codec , merge (version control) , motion vector , scalable video coding , quarter pixel motion , decoding methods , coding (social sciences) , algorithmic efficiency , real time computing , motion estimation , algorithm , artificial intelligence , computer hardware , parallel computing , mathematics , statistics , database , image (mathematics)
This paper describes the scalable extension of High Efficiency Video Coding (HEVC) to provide flexible highquality digital video content services. The proposed scalable codec is designed on multi‐loop decoding architecture to support inter‐layer sample prediction and inter‐layer motion parameter prediction. Inter‐layer sample prediction is enabled by inserting the reconstructed picture of the reference layer (RL) into the decoded picture buffer of the enhancement layer (EL). To reduce the motion parameter redundancies between layers, the motion parameter of the RL is used as one of the candidates in merge mode and motion vector prediction in the EL. The proposed scalable extension can support scalabilities with minimum changes to the HEVC and provide average Bjøntegaard delta bitrate gains of about 24% for spatial scalability and of about 21% for SNR scalability compared to simulcast coding with HEVC.