Fast Intra Mode Decision Using DCT Coefficient Distribution in H.264/AVC

Sung-Wook HONG  Yung-Lyul LEE  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E93-A   No.3   pp.660-663
Publication Date: 2010/03/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E93.A.660
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Image
fast mode decision,  DCT,  intra prediction,  H.264/AVC,  

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The rate-distortion optimization (RDO) method in the H.264/AVC encoder is an informative technology that improves the coding efficiency, but increases the computational complexity. In this letter, a fast Intra mode decision algorithm using DCT (Discrete Cosine Transform) coefficients distribution is proposed to reduce the H.264 encoder complexity. The proposed method reduces the encoder complexity on average 63.44%, while the coding efficiency is slightly decreased compared with the H.264/AVC encoder.