JPEG2000图像编码的连续位平面速率分配技术

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). Pub Date : 2003-05-21 DOI:10.1109/ICASSP.2003.1199157

Y. M. Yeung, O. Au, A. Chang

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引用次数: 7

摘要

提出了一种适用于JPEG2000图像编码的连续位平面速率分配(SBRA)控制方案。该方法仅利用当前率失真信息，可以获得接近JPEG2000中采用的压缩后率失真(PCRD)优化方案的质量。在压缩率为0.25bpp(1/32)的情况下，该方案可以有效地将熵编码过程的计算成本和工作存储器大小降低约90%。在不使用未来率失真信息的情况下，该方法的顺序特性非常适合于实时(或低延迟)应用和实现。

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Successive bit-plane rate allocation technique for JPEG2000 image coding

A novel rate control scheme using successive bit-plane rate allocation (SBRA) is proposed for JPEG2000 image coding. By using the current rate-distortion information only, the proposed method can achieve a quality close to the post-compression rate-distortion (PCRD) optimization scheme adopted in JPEG2000. The proposed scheme can efficiently reduce both the computational cost and working memory size of the entropy coding process up to about 90%, in the case of 0.25bpp (1/32) compression. Without using the future rate-distortion information, the sequential property of the proposed method is highly suitable for real-time (or low delay) applications and implementation.

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来源期刊

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03).

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