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- W2188010674 abstract "Transformation and quantization are important steps for changing spatial residual data into frequency signal component. All-zero block (AZB) detection is an efficient means to reduce calculation times of transformation and quantization. In order to raise the efficiency of all-zero block detection and avoid error judgment, an enhanced all-zero block detection approach is proposed by using the base matrixes in this paper. Firstly, the base matrixes of integer transformation coefficients are analyzed. It can be found that all elements in the same sub-area are equal or inverse to each other. Considering this distribution property, we can deal with the elements within the same sub-area together and deduce a looser judgment criterion for allzero block. Consequently, a larger proportion of all-zero blocks can be detected in advance. The experiments results demonstrate that the proposed algorithm outperforms other methods in the detection rate." @default.
- W2188010674 created "2016-06-24" @default.
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- W2188010674 date "2013-01-01" @default.
- W2188010674 modified "2023-09-26" @default.
- W2188010674 title "AN ENHANCED EARLY DETECTION METHOD FOR ALL ZERO BLOCK IN H.264" @default.
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