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A PREDICTION BASED ALL-ZERO BLOCK DETECTION METHOD FOR H.2G3 被引量:1

A PREDICTION BASED ALL-ZERO BLOCK DETECTION METHOD FOR H.263
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摘要 In this letter, a novel method based on Temporal and Spatial Prediction (TSP) to detecl all-zero DC.'T coefficients based on temporal and .spatial prediction between neighboring blocks is proposed. The presented algorithm uses the knowledge of all-zero block distribution in the previous frame combined with the Sum of Absolute Difference (S.AD) of the corresponding macroblock as a. criterion. The algorithm almost needs no additional computation, and it. shows an excellent overall detection performance in simulations. In this letter, a novel method based on Temporal and Spatial Prediction (TSP) to detect all-zero DCT coefficients based on temporal and spatial prediction between neighboring blocks is proposed. The presented algorithm uses the knowledge of all-zero block distribution in the previous frame combined with the Sum of Absolute Difference (SAD) of the corresponding macroblock as a criterion. The algorithm almost needs no additional computation, and it shows an excellent overall detection performance in simulations.
出处 《Journal of Electronics(China)》 2002年第2期183-186,共4页 电子科学学刊(英文版)
关键词 All-zero block DCT Quantization: H.263 无线可视化通信 图像编码 H.263 总零块
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  • 1Alice Yu,Rubby Lee,Michael Flynn.Early detection of all-zero coefficients in H[].Proceedings of the Picture Coding SymposiumBerlinGermanySeptember.1997

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  • 3Li Ze-Nian,Mark S Drew.Fundamentals of multimedia[M].United States:Prentice Hall,2004.
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  • 7Oh H, Lee H. Adaptive adjustment of the search window for block-matching motion estimation [J]. IEEE Trans Image Processing,2000,2(9):287-290.

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