小波变换消除图象噪声.txt

来自「压缩包中共有7个文件」· 文本 代码 · 共 11 行

 load sinsin;
>> clear all
>> load sinsin;

>> subplot(1,3,1),image(X)
>> init=2055615866;randn('seed',init);
>> x=X+18*randn(size(X));
>> subplot(1,3,2),image(x)
>> [thr,sorh,keepapp]=ddencmp('den','wv',x);%调用ddencmp函数求取噪声缺省值
>> xd=wdencmp('gbl',x,'sym4',2,thr,sorh,keepapp);%去噪声
>> subplot(1,3,3),image(xd)