Efficient MB and prediction mode decisions for intra prediction of H.264 high profile

Authors:
Tao-Sheng Ou;Yi-Hsin Huang;Homer H. Chen
Affiliations:
Graduate Institute of Communication Engineering, National Taiwan University;Graduate Institute of Communication Engineering, National Taiwan University;Graduate Institute of Communication Engineering, National Taiwan University
Venue:
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Year:
2009

Citing 7
Cited 0

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Abstract

The rate-distortion optimization framework employed in H.264 for the selection of best coding mode is computationally expensive, although it achieves remarkable coding efficiency. In this paper, an integrated intra prediction algorithm for intra-frame coding of the H.264 High Profile is proposed. It consists of two components: a variance-based method for macroblock mode decision and an improved filter-based method for prediction mode decision using contextual information. The two components can work independently or jointly to achieve higher efficiency. The integrated algorithm achieves an average saving of 51.3% (maximum 66.0%) in encoding time for intra coded frames, with negligible effect on PSNR and bit-rate.