小波变换的图像去噪，对图像进行分层。小波阈值去噪，对图像进行多层次的去噪。-Wavelet image denoising, layered images. Wavelet threshold denoising, multi-level image denoising.

基于国外一篇文章写的多级阈值小波去噪程序，需要的可以参考参考，文章也包含在压缩包里面。-Based on an article written by foreign multi-level threshold wavelet denoising procedures, the need may refer to the reference, the article also contained in a compressed archive.