离散脊波变换及其在SAR图像压缩中的应用  

Discrete ridgelet transformation and its application in SAR image compressing

作　　者：李卫斌[1,2] 何明一[2] 张顺利[1] 

机构地区：[1]咸阳师范学院图形图像处理研究所,陕西咸阳712000 [2]西北工业大学电子信息学院,陕西西安710072

出　　处：《计算机应用》2007年第5期1132-1134,共3页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60472084);陕西省教育厅自然科学基金资助项目(05JK312);咸阳师范学院科研基金资助项目(06XSYK108)

摘　　要：首先介绍了SAR图像的特点,在对离散脊波变换的正交性及其与Radon变换的关系深入研究的基础上,利用其在线性特征表示方面的优势,将离散脊波变换应用到SAR图像的压缩,提出了一种基于离散正交脊波变换的SAR图像压缩方法。实验数据表明该算法对斑点噪声污染严重的SAR雷达图像压缩较传统的小波变换更加有效。Accordingto the characteristics of noise in SAR, the ridgelet theory, which has been hot research field for its superiority in line feature, was introduced to SAR image compressing. After analyzing the traditional method based on wavelet in detail, a new ridgelet-based compressing approach was proposed. Finally, experimental results demonstrate its good performance, especially for urban SAR image.

关 键 词：脊波变换 小波变换 SAR图像 压缩 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]