说明：  小波分析及其应用/同济大学/计算机系/宣国荣 详细介绍小波，并在图像去噪方面给出例子，是学习小波对于图像处理的很好的文件
(Wavelet analysis and application/Tongji University/Computer Science Department/Xuan Guorong Wavelet detail, and gives examples of image denoising, wavelet learn a good deal for the image file)