期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：51
期号：2
出版社：Journal of Theoretical and Applied
摘要：In order to make up for the deficiency of the MAD prediction scheme of G012 rate control algorithm, we propose a weighted budget method based on image luminance difference. To improve the BU(basic unit) rate control, we put forward a method to distribute coding bits based on PSNR(peak signal to noise ratio). The experimental results show that, compared with G012 algorithm using the new algorithm should get better video quality. At the same time, when encoding rate control for video sequences of faster scenes changes by using our algorithm, the advantages are particularly prominent.
关键词：H.264; BU Rate Control; MAD; Brightness Gradient; Weighted Estimation
