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In order to reduce the computational complexity and improve the efficiency of H.264-AVC encoder for low delay communication, A new simpler and efficient R-1-Q model and D-Q model was proposed based on the spatio-temporal correlation and the frame content of complexity with an accurate mean-absolutedifference MAD prediction model. Based on the new Rate-Distortion model, the proposed algorithm is able to adaptively optimize macroblock layer rate control so that the overall coding efficiency is improved. Experimental results show that the proposed algorithm increased the code efficiency, got more stable image quality and achieves a bit rate closer to the target rate.

KEYWORDS

rate-distortion; rate control; H.264-AVC; quantification; video encoding template 一

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Autor: Shuqian He, Jianxin Wang, Qingsong Zeng

Fuente: http://www.scirp.org/



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