PS 滤镜——扩散特效， 毛玻璃 效果

%%%  Diffuse

%%%  扩散效果

clc;

clear all;

addpath(‘E:\PhotoShop Algortihm\Image Processing\PS Algorithm‘);

Image=imread(‘4.jpg‘);

Image=double(Image);

size_info=size(Image);

height=size_info(1);

width=size_info(2);

Filter_size=7;

sigma=Filter_size/6;

F_gaussian=fspecial(‘gaussian‘, Filter_size, sigma);

% 利用邻域的任意一点代替当前像素点

N=3;

Image=imfilter(Image,F_gaussian,‘conv‘);

Image_out=Image;

for i=1+N:height-N

for j=1+N:width-N

k1=rand()-0.5;

k2=rand()-0.5;

m=(k1*(N*2-1));

n=(k2*(N*2-1));

h=floor(mod(i+m,height));

w=floor(mod(j+n,width));

if w==0;

w=width;

end

if h==0

h=height;

end

Image_out(i,j,:)=Image(h,w,:);

end

end

imshow(Image_out/255);

原图

效果图