>> figure(4) >> image(X0); >> colormap(map); 运行结果如下： 低频A15010015020025050100150200250低频A25010015020025050100150200250低频A30.511.550100150200250200400600800100050100150200250501001502002505010015020025050100150200250501001502002505010015020025050100150200250水平高频H35010015020025050100150200250水平高频H25010015020025050100150200250垂直高频V3水平高频H15010015020025050100150200250垂直高频V25010015020025050100150200250对角高频D3垂直高频V15010015020025050100150200250对角高频D2对角高频D1 3.用图形接口方式选择对称小波对图像facets进行3层分解，结果如下： 4.用显示模式“tree”显示分解，结果如下：