PS 滤镜— —Marble 效果

    clc;

    clear all;

    close all;

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

    I=imread('4.jpg');

    I=double(I);

    Image=I/255;

    xScale = 20;

    yScale = 20;

    amount = 1;

    turbulence =0.25;

    Image_new=Image;

    [height, width, depth]=size(Image);

    Index=1:256;

    sin_T=-yScale*sin(2*pi*(Index-1)/256*turbulence);

    cos_T=xScale*cos(2*pi*(Index-1)/256*turbulence);

    [ind, g1, g2, g3]=init_arr();

    for ii=1:height

    % %     [ind, g1, g2, g3]=init_arr();

        for jj=1:width

            dis=min(max( floor(127*(1+Noise2(jj/xScale, ii/yScale, ind, g2))), 1), 256);

            x=jj+sin_T(dis);

            y=ii+cos_T(dis);

    % %         if (x<=1)     x=1;  end

    % %         if (x>=width)   x=width-1; end;

    % %         if (y>=height)  y=height-1; end;

    % %         if (y<1)  y=1;     end;

    % %

            if (x<=1)     continue;  end

            if (x>=width)   continue; end;

            if (y>=height)  continue; end;

            if (y<1)  continue;     end;

            x1=floor(x);

            y1=floor(y);

            p=x-x1;

            q=y-y1;

            Image_new(ii,jj,:)=(1-p)*(1-q)*Image(y1,x1,:)+p*(1-q)*Image(y1,x1+1,:)...

                +q*(1-p)*Image(y1+1,x1,:)+p*q*Image(y1+1,x1+1,:);

        end

    end

    imshow(Image_new)

    imwrite(Image_new, 'out.jpg');

参考来源：http://www.jhlabs.com/index.html

原图：

效果图：