New Frame-Layer Rate Distortion Model Related to Image Temporal Activity

摘要：

In this paper,a new frame-layer rate distortion model is introduced.It is divided into rate model and distortion model as a function of quantization step.Comparing to exiting models,this model offers some new features.First,it made an analysis on the relationship between the frame layer temporal activity and the shape of rate distortion curve,so it could better adapt to the characters of the current image.Second,the rate model is simpler in calculation,once the model is built,the quantization parameter can be directly computed out using the target bits distributed for the current frame.Besides,the distortion model here is more accurate than other models.The model is mainly based on statistical method with little theoretical derivation.Despite of this,the experimental results will give a good demonstration of all the above advantages for the new models.

作者: Tao Jing Yu Zhang Yan Huo Renfei Niu

作者单位: School of Electronics and Information Engineering,Beijing Jiaotong UniversityBeijing 100044,P.R.Chin School of Electronics and Information Engineering,Beijing Jiaotong University Beijing 100044,P.R.Chi

会议类型: 国际会议

会议名称: 9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP08)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-26（万方平台首次上网日期，不代表论文的发表时间）