摘要
In this paper,a new predictive coding algorithm is presented for lossless image compression. This algorithm considers both the local edge and the variance ratio of pixel value in prediction process. It further reduces the entropy of the predictive error image with error feedback technology. Simulation results show that the performance of this algorithm is better than not only the standard algorithm(LOCO_I)provided by JPEG_LS ,but also CALIC, which is the state-of-art in the literature of image compression.
In this paper, a new predictive coding algorithm is presented for lossless image compression. This algorithm considers both the local edge and the variance ratio of pixel value in prediction process. It further reduces the entropy of the predictive error image with error feedback technology. Simulation results show that the performance of this algorithm is better than not only the standard algorithm(LOCO-I)provided by JPEG-LS,but also CALIC,which is the state-of-art in the literature of image compression.
出处
《计算机科学》
CSCD
北大核心
2001年第12期30-32,29,共4页
Computer Science
基金
国家863计划"多媒体数据动态压缩及其应用研究"(编号:863-317-04-18-99)
重庆邮电学院科技基金"图像无损压缩技术研究"(编号:A2001-25)
