Object-based Rate Control Scheme for H. 264 Video Coding
面向对象的H.264码率控制算法

A new rate control scheme in H.264 coding standard was proposed.The scheme includes + shape MAD prediction model based on space and time relativity of MAD.We used former frame bit usage as penalty factor to modify the bit-allocation rule to balance buffer share.Furthermore,combining video text extraction techniques,the method realized macro bit allocation and quantization step based on text area.Experimental results show that the new rate-control scheme can control the bits very well and the average PSNR is...