大佬求教!怎么加入对高斯噪声和椒盐噪声用加权均值滤波?（用[3 3][5 5]两个尺寸）I=imread('electric.tif');a= imnoise(I,'gauss',0.02); %添加高斯噪声b = imnoise(I,'salt & pepper',0.02); %添加椒盐噪声 ave1=fspecial('average',3); %产生3×3的均值模版ave2=fspecial('average',5); %产生5×5的均值模版a1 = filter2(ave1,a)/255; %均值滤波3×3a2= filter2(ave2,a)/255; %均值滤波5×5b1 = filter2(ave1,b)/255; %均值滤波3×3b2= filter2(ave2,b)/255; %均值滤波5×5a3 = medfilt2(a,[3 3]); %中值滤波3×3模板a4= medfilt2(a,[5 5]); %中值滤波5×5模板b3 = medfilt2(b,[3 3]); %中值滤波3×3模板b4= medfilt2(b,[5 5]); %中值滤波5×5模板imshow(I);figure,imshow(a);figure,imshow(b);figure,imshow(a1);figure,imshow(a2);figure,imshow(a3);figure,imshow(a4);figure,imshow(b1);figure,imshow(b2);figure,imshow(b3);figure,imshow(b4);