一种改进的基于小波变换的SAR图像压缩编码

An Filtering Algorithm for SAR Images Based on Wavelet Transform

由于SAR数据图像与光学传感器数据特点有所不同,因此一般的适合光学图像的压缩算法并不一定适合雷达图像。文章根据SAR图像的特点对SPECK算法进行了改进。用此改进方法对SAR图像进行处理,通过与SPIHT算法的比较分析可以看出,该算法从各个方面都明显优于传统的SPIHT算法,而且这种方法有较好的视觉特征,有利于进行图像的校准和目视解译。

General compression algorithms for optical images are not optimal for SAR images because of their own characteristics.This paper improves SPECK algorithm based on SAR images specialities.This algorithm is more effective in many aspects,compared with the results of conventional SPIHT algorithm,when applying for SAR image.