当前位置:首页 >> 电力/水利 >>

电子信息工程外文翻译--使用自适应预测和自适应算术编码的有损图像的无损压缩


中文 3595 字 附录 B 外文参考文献 Lossless Image Compression with Lossy Image Using Adaptive Prediction and Arithmetic Coding Seishi Taka and Mikio Takagi Institute of Industrial Science,University of Tokyo Abstract Lossless gray scale image compression is necessary in many purposes, such as medical image, image database and so on. Lossy image is important as well, because of its high compression ratio. In this paper, we propose a Lossless image compression Scheme using a lossy image generated with PEG-DCT scheme. Our concept is, send a PEG-compressed lossy image primary, then send residual information and reconstruct the original image using both the lossy image and residual information. 3-dimensional adaptive prediction and an adaptive arithmetic coding are used, which fully uses the statistical parameter of distribution of symbol source. The optimal number of neighbor pixels and lossy pixels used for prediction is discussed. The compression ratio is better than previous work and quite close to the originally Lossless algorithm. Introduction Today there are many studies on image compression, particularly on lossy and very low bit rate compression. For image database, such high compression ratio is Important for storage and also for quick transmission,but to deal with various kinds of users demand, Lossless image transmission is indispensable. In this paper, we propose an effective Lossless compression algorithm for gray image using lossy compressed image. The lossy compression schem

相关文章:
图像数据压缩综述
获得没有信息丢失的一定 压缩比的图像; 无损压缩...编码或游程编码结合算术编码的组合方式用于对变换编码...[4]、基于上下文的自适应预测编码 (CALlC)[5]和...
三种无损压缩原理介绍
缩数据恢复的图像原始图像的差别,图像数据压缩可以简单分为两类: “有损 ...经 常使用的无损压缩方法有游程编码、霍夫曼编码和算术编码等。 2.2.1 游程...
更多相关标签: