用DWT实现二维小波变换 二维小波分解 重构图形与原始图像误值-With the realization of two-dimensional wavelet transform DWT wavelet decomposition of two-dimensional graphic reconstruction of the original image with the wrong value

图像小波分解,在matlab环境下，对图像进行小波分解，分解层数可以自己设定，测试图像是lena-image wavelet