A Pipelined Architecture for Intra PU Encoding in HEVC

Yunpyo HONG  Juwon BYUN  Youngjo KIM  Jaeseok KIM  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E97-A   No.6   pp.1439-1442
Publication Date: 2014/06/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E97.A.1439
Type of Manuscript: LETTER
Category: Image
HEVC,  Intra prediction,  rough mode decision (RMD),  rate distortion optimization (RDO),  pipelining,  

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This letter proposes a pipelined architecture with prediction mode scheduling for high efficiency video coding (HEVC). An increased number of intra prediction modes in HEVC have introduced a new technique, named rough mode decision (RMD). This development, however, means that pipeline architectures for H.264 cannot be used in HEVC. The proposed scheme executes the RMD and the rate-distortion optimization (RDO) process simultaneously by grouping the intra prediction modes and changing the candidate selection method of the RMD algorithm. The proposed scheme reduces execution cycle by up to 26% with negligible coding loss.