A fast intraprediction method for H.264 video coding

Jianning Zhang; Yuwen He; Shiqiang Yang; Yuzhuo Zhong

doi:10.1117/12.509310

19 November 2003 A fast intraprediction method for H.264 video coding

Jianning Zhang, Yuwen He, Shiqiang Yang, Yuzhuo Zhong

Proceedings Volume 5203, Applications of Digital Image Processing XXVI; (2003) https://doi.org/10.1117/12.509310
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

This paper proposes a novel fast intra prediction method to optimize H.264/MPEG-4 AVC video coding. In H.264, coding performance is enhanced through spatial prediction besides temporal prediction. In its luminance intra prediction, 4 modes for 16×16 block-size and 9 directional modes for 4×4 block-size are utilized, and the optimal intra mode is selected by R-D optimization, so the intra mode selection results in high coding complexity. To reduce the complexity of intra prediction, the fast hierarchical mode selection method is proposed with fewer modes to be examined, and intermediate computing results are reused. Therefore the intra prediction mode decision process is accelerated greatly. With the proposed fast intra prediction mode selection method, the intra prediction time can be reduced above 30% with less than 2% increase of bitrate, and up to 0.04dB loss in performance compared to the brute intra prediction mode selection method in H.264 reference software. The results are obtained by encoding with all I-frames, and even less performance loss can be achieved with the same time saving if encoding in I, P and B frames. So the complexity of computation can reduce constantly.

Citation Download Citation

Jianning Zhang, Yuwen He, Shiqiang Yang, and Yuzhuo Zhong "A fast intraprediction method for H.264 video coding", Proc. SPIE 5203, Applications of Digital Image Processing XXVI, (19 November 2003); https://doi.org/10.1117/12.509310

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