说明：  小波分解图像，并显示分解系数图像。可多重小波分解。可以任意选择小波。三十个字三十个字三十个字三十个字
(Wavelet decomposition of images, and display the image decomposition coefficients. Can be multiple wavelet decomposition. Can be arbitrary choice of wavelet. 30 characters 30 characters 30 characters 30 characters)