Buffer control of DCT-based intrafield video coding

ShengQiang Lou; Fukan Huang; Liangzhu Zhou; Jianwei Wan

doi:10.1117/12.298386

9 January 1998 Buffer control of DCT-based intrafield video coding

ShengQiang Lou, Fukan Huang, Liangzhu Zhou, Jianwei Wan

Proceedings Volume 3309, Visual Communications and Image Processing '98; (1998) https://doi.org/10.1117/12.298386
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States

Abstract

In this paper, a new buffer control strategy for DCT-based intrafield video encoder is presented. It selects the encoding parameters according to the rate-quantization models for three kinds of blocks: edge blocks, texture blocks and smooth blocks. It adapted to the scene changes through adjusting the R-Q models' parameters. A simple and effective criteria is presented for classifying the blocks. The classifying result based on it is close to the result gotten through quantizing the bits needed to code a block into three levels. This method can be applied to some other coding techniques such as H-261; MPEG, extra computations needed by it is modest. Experiments show that this buffer control policy can control the output bit rate steadily even at scene changes.

Citation Download Citation

ShengQiang Lou, Fukan Huang, Liangzhu Zhou, and Jianwei Wan "Buffer control of DCT-based intrafield video coding", Proc. SPIE 3309, Visual Communications and Image Processing '98, (9 January 1998); https://doi.org/10.1117/12.298386

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