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- W2349567293 abstract "In a given bit rate,encoder with the rate control can get high quality and smooth video.So rate control is widely used in video compression and transmission,and plays an important role.This paper proposes an improved rate control algorithm based on the latest video coding standard H.264--MAD(mean absolute difference) improvements in calculation QP(quantization parameter).Using MAD to calculate the QP,second order distortion model can obtain a good signal-to-noise ratio,compression ratio and rate stability.In this paper,hadamard is added to calculate the difference of pixel value which is called SATD(sum of absolute hadamard transformed differences).Instead of MAD,SATD is adopted to calculate the quantitative parameters of the second order distortion model.Compared with JM18.0 original algorithm,the experimental results show that the new algorithm increase 0.2dB in the peak signal-to-noise ratio(PSNR) of the sequence of video brightness,achieve better rate control,facilitate the receiving end to obtain a more stable rate of compressed video." @default.
- W2349567293 created "2016-06-24" @default.
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- W2349567293 date "2013-01-01" @default.
- W2349567293 modified "2023-09-28" @default.
- W2349567293 title "Optimization of rate control algorithm based on H.264" @default.
- W2349567293 hasPublicationYear "2013" @default.
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