clc,clear all,close all;load woman;[c,s]=wavedec2(X,2,‘haar‘);%进行2尺度二维离散小波分解。分解小波函数haar%多尺度二维离散小波重构(逆变换)Y=waverec2(c,s,‘haar‘);figure;subplot(1,2,1),imshow(X,map),title(‘原始图像‘);subplot(1,2,2),imshow(Y,map),title(‘重构图像‘);