An all-zero blocks early detection method for high-efficiency video coding

Zhengguang Lv; Shengfu Dong; Ronggang Wang; Xiaodong Xie; Huizhu Jia; Wenmin Wang; Wen Gao

doi:10.1117/12.2039048

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17 February 2014 An all-zero blocks early detection method for high-efficiency video coding

Zhengguang Lv, Shengfu Dong, Ronggang Wang, Xiaodong Xie, Huizhu Jia, Wenmin Wang, Wen Gao

Proceedings Volume 9029, Visual Information Processing and Communication V; 902902 (2014) https://doi.org/10.1117/12.2039048
Event: IS&T/SPIE Electronic Imaging, 2014, San Francisco, California, United States

Abstract

The High Efficiency Video Coding has a significant compression performance benefit versus previous standards. Thanks to the high efficiency prediction tools, blocks with all-zero quantized transform coefficients are quite common in HEVC. The computation load of transform and quantization can be remarkably reduced if the all-zero blocks can be detected prior to transform and quantization. Based on the theoretical analysis of the integer transform and quantization process in HEVC, we propose some SAD thresholds under which all-zero block can be detected. Simulation results show that with our proposed method, nearly 37% time saving for computation time of transform and quantization can be saved.

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Zhengguang Lv, Shengfu Dong, Ronggang Wang, Xiaodong Xie, Huizhu Jia, Wenmin Wang, and Wen Gao "An all-zero blocks early detection method for high-efficiency video coding", Proc. SPIE 9029, Visual Information Processing and Communication V, 902902 (17 February 2014); https://doi.org/10.1117/12.2039048

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