| A PREDICTION BASED ALL—ZERO BLOCK DETECTION METHOD FOR H．263 |
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| 引用本文： | TianDong YaoZhiheng 等.A PREDICTION BASED ALL—ZERO BLOCK DETECTION METHOD FOR H．263[J].电子科学学刊(英文版),2002,19(2):183-186. |
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| 作者姓名： | TianDong YaoZhiheng |
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| 作者单位： | SingalandInformationProcessingLaboratory,BeijingPolytechnicUniversity,Beijing100022 |
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| 摘 要： | 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.
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| 关 键 词： | 无线可视化通信 图像编码 H.263 总零块 |
A prediction based all-zero block detection method for H.263 |
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| Dong Tian,Zhiheng Yao,Lansun Shen.A prediction based all-zero block detection method for H.263[J].Journal of Electronics,2002,19(2):183-186. |
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| Authors: | Dong Tian Zhiheng Yao Lansun Shen |
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| Affiliation: | Signal and Information Processing Laboratory, Beijing Polytechnic University, Beijing 100022 |
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| Abstract: | 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. |
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| Keywords: | All-zero block DCT Quantization H 263 |
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