A video-coding quantization scheme for an embedded system
The traditional MPEG quantization process leads to a low efficiency for the video compression,owing to lacking of a division component inside the general embedded processors. In order to solve this problem,a new scheme of quantization is proposed in this paper. According to the traits of the general embedded processors,an optimal quantization matrix is constructed,which realizes one-step quantization by substituting shift-operations for division-operations.Meanwhile,this scheme uses different quantization strategies in terms of the differences between the video blocks to be coded,and reduces the image quality loss caused by the unified quantization.Experiments show that this scheme can not only obviously improve the efficiency of quantization,but subjective and objective quality of coded images as well.
Shimei Su Bing Zhou Xingjing Zhang
Zhengzhou University
国际会议
The Fifth IEEE International Symposium on Embedded Computing(SEC 2008)(第五届IEEE国际嵌入式系统计算会议)
北京
英文
338-342
2008-10-06（万方平台首次上网日期，不代表论文的发表时间）