球坐标系下的小波图像去噪方法

Method of Image Denoising Based on Wavelet Transform in Spherical Coordinates

介绍一种新的小波图像去噪方法,该方法首先将图像二维小波分解后的3个高频分量进行球坐标变换,然后对其径向分量r进行收缩去噪处理,与传统的直接收缩去噪法相比具有算法简单、工作量少等特点.仿真结果表明,该方法去噪效果良好.

This paper introduces a new image denoising method based on wavelet transform. In this method three high-frequency components from the image 2-D wavelet decomposition are transformed into spherical coordinates. The wavelet shrinkage of its radial component is further applied to image denoising. This method provides simpler algorithms with less work and simulation process shows good denoising effect.