A Video Bit Rate Control Algorithm Based on Weighted Estimate of Image Brightness Difference
Rate control is the core issue to realize video encoder,and it is also one of the key factors determining the quality of video code system.Given the MAD (Mean Absolute Difference) prediction and the drawback of bit rate control in the BU (Basic Unit) layer,improvements are put forward on the basis of analyzing and researching the G012 rate control algorithms in this paper.In this paper,we proposed a new video bit rate control algorithm to overcome the drawback of bit rate control in the BU (Basic Unit) layer.Combined with the image brightness gradient value to estimate in the MAD prediction,the allocation encoding bits method based on the PSNR (Peak Signal to Noise Ratio) is proposed in the rate control of BU layer.The experiment results show that compared with JM algorithms in H.264 standard reference software,the improved algorithm is enhanced in the PSNR.
H.264 Basic Unit Mean Absolute Difference Peak Signal to Noise Ratio
Honggao Zhu Qi Feng
School of Information and Technology Hubei Vocational and Technical college Xiaogan,Hubei,China Business School Newcastle University,Newcastle Upon Tyne United Kingdom
国际会议
杭州
英文
2461-2464
2013-03-22（万方平台首次上网日期，不代表论文的发表时间）