利用本文算法有效克服了传统余弦变换编码在

高压缩比时产生方块效应, 而且相同压缩比下, 图像

复质量明显优于Shapiro 提出的EZW算法。本文算法

对EZW有了一定的改进, 具有一定的优势。-In this paper, the effective use of algorithms to overcome the traditional cosine transform coding in high compression ratio when blocking, and under the same compression ratio, image quality is better than complex Shapiro' s EZW algorithm proposed. EZW algorithm for a certain improvement, have certain advantages.