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Efficient intra-prediction mode selection for 4×4 blocks in H.264

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4 Author(s)
Bojun Meng ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China ; Au, O.C. ; Chih-Wah Wong ; Hong-Kwai Lam

In the upcoming H.264, intra-prediction for 4×4 and 16×16 blocks is used to compress I-frame. However, we need to choose one of the 9 prediction modes for each 4×4 block. The full search (FS) algorithm to select the mode is computationally expensive. In this paper, an efficient intra-prediction mode selection (EIPMS) method is proposed based on partial computation of the cost function, selective computation of highly probable modes, early termination, and variable threshold setting. The proposed EIPMS can reduce the complexity considerably while maintaining similar PSNR and bit rate.

Published in:

Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on  (Volume:3 )

Date of Conference:

6-9 July 2003