计算机工程2012，Vol.38Issue(6)：238-240,3.DOI:10.3969/j.issn.1000-3428.2012.06.079
一种改进的JVT-H017码率控制算法
Improved JVT-H017 Code Rate Control Algorithm
摘要
Abstract
This paper proposes an improved rate control algorithm for the basic-unit layer encoder of JVT-H017. Adopting a new weighted time and space model to predict the Mean Absolute Difference(MAD) and according to the Human Visual System(HVS) characteristic to design a weighted Y component of Peak Signal to Noise Ratio(PSNR), it recalculates the picture complexity of current basic-unit layer with the new MAD and PSNR, which highlights the importance of Y component compared to UV component, and then allocates target bits with above. Experimental results show that compared with the algorithms of JVT-H017, proposed algorithm is closer to the target bit, the average error rate reduces 0.269%. The average of PSNR raises 0.278 dB. The proposed algorithm still ensures the quality of the video after transporting in the 3G wireless channel.关键词
H.264/AVC标准/码率控制/平均绝对差值/复杂度/峰值信噪比Key words
H.264/AVC standard/ code rate control/ Mean Absolute Difference(MAD)/ complexity/ Peak Signal to Noise Ratio(PSNR)分类
信息技术与安全科学引用本文复制引用
丁文,张浩平,胡鹏莎..一种改进的JVT-H017码率控制算法[J].计算机工程,2012,38(6):238-240,3.基金项目
国家自然科学基金资助项目(30671639) （30671639）
江苏省自然科学基金资助项目(BK2009393) （BK2009393）
