小波分析在图像处理中有非常重要的应用，包括图像压缩，图像去噪，图像融合，图像分解，图像增强等。文中给出了详细的程序范例，用MATLAB实现了基于小波变换的图像处理。-Wavelet analysis in image processing has very important applications, including image compression, image denoising, image fusion, image decomposition, image enhancement. The paper gives detailed procedures for example, implemented with the MATLAB image processing based on wavelet transform.