A Novel Joint Rate Distortion Optimization Scheme for Intra Prediction Coding in H.264/AVC

Qingbo WU  Jian XIONG  Bing LUO  Chao HUANG  Linfeng XU  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.4   pp.989-992
Publication Date: 2014/04/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E97.D.989
Type of Manuscript: LETTER
Category: Image Processing and Video Processing
Keyword: 
RDO,  video coding,  H.264/AVC,  

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Summary: 
In this paper, we propose a novel joint rate distortion optimization (JRDO) model for intra prediction coding. The spatial prediction dependency is exploited by modeling the distortion propagation with a linear fitting function. A novel JRDO based Lagrange multiplier (LM) is derived from this model. To adapt to different blocks' distortion propagation characteristics, we also introduce a generalized multiple Lagrange multiplier (MLM) framework where some candidate LMs are used in the RDO process. Experiment results show that our proposed JRDO-MLM scheme is superior to the H.264/AVC encoder.