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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
Publication Date: 2014/06/01
Online ISSN: 1745-1337
Type of Manuscript: LETTER
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.