JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.100 P.89-94

http://doi.org/10.1631/jzus.2006.AS0089

A new all-zero 4×4 block determination rule for integer transform and quantization in AVS-M encoder

Author(s): Liu Dong-Hua, Chen Yi-Qiang
Affiliation(s): Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China
Corresponding email(s): dhliu@shict.cn
Key Words: AVS-M, Integer DCT transform, Quantization, All-zero 4×, 4 block, PSNR

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Liu Dong-Hua, Chen Yi-Qiang. A new all-zero 4×4 block determination rule for integer transform and quantization in AVS-M encoder[J]. Journal of Zhejiang University Science A, 2006, 7(100): 89-94.

@article{title="A new all-zero 4×4 block determination rule for integer transform and quantization in AVS-M encoder",
author="Liu Dong-Hua, Chen Yi-Qiang",
journal="Journal of Zhejiang University Science A",
volume="7",
number="100",
pages="89-94",
year="2006",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.AS0089"
}

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%A Liu Dong-Hua
%A Chen Yi-Qiang
%J Journal of Zhejiang University SCIENCE A
%V 7
%N 100
%P 89-94
%@ 1673-565X
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.AS0089

TY - JOUR
T1 - A new all-zero 4×4 block determination rule for integer transform and quantization in AVS-M encoder
A1 - Liu Dong-Hua
A1 - Chen Yi-Qiang
J0 - Journal of Zhejiang University Science A
VL - 7
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SP - 89
EP - 94
%@ 1673-565X
Y1 - 2006
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2006.AS0089

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: A new all-zero block determination rule was used to reduce the complexity of the AVS-M encoder. It reuses the sum of absolute difference of 4×4 block obtained from motion estimation or intra prediction as parameters so that the determination threshold need to be computed only once when quantization parameter (QP) is invariable for given video sequence. This method avoids a lot of computation for transform, quantization, inverse transform, inverse quantization and block reconstruction. Simulation results showed that it can save about 20%~50% computation without any video quality degradation.

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Reference

[1] AVS Workgroup, 2005. Information Technology—Advanced Coding of Audio and Video—Part 7: Mobile Video.

[2] Kim, G.Y., Mon, Y.H., Kim, J.H., 2004. An early detection of all-zero DCT blocks in H.264. Proc. IEEE Int. Conf. Image Processing, p.453-456.

[3] Pao, I.M., Sun, M.T., 1999. Modeling DCT coefficients for fast video coding. IEEE Trans. Circuit Syst. Video Technol., 9:608-616.

[4] Wang, Y., Zhou, Y., Yang, H., 2004. Early detection method of all-zero integer transform coefficients. IEEE Trans. Consumer Electron., 50(3):923-928.

[5] Zheng, Y., Gao, W., Zhao, D.B., Ma, S.W., Lu, H.Q., 2004. A Method for Low Complexity 16 Bit 4×4 Integer Transform and Quantization. AVS_M1331.

[6] Zhou, X., Yu, Z., Yu, S., 1998. Method for detecting all-zero DCT coefficients ahead of discrete cosine transform and quantization. Electro. Lett., 34(19):1839-1840.

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