do you have the matlab code for finding edge preservation index??

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BERLY SUSAN BABU 2015-10-4

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https://ww2.mathworks.cn/matlabcentral/answers/246655-do-you-have-the-matlab-code-for-finding-edge-preservation-index

评论： Walter Roberson 2015-10-4

ENL is commonly used to measure the speckle suppression of different SAR image filters. When the ENL value is bigger, it indicates the image is smoothed well.EPI measures the ability to maintain details of the image

function[y] = epi(Io, If)
[a,b] = size(Io);
o=0;
p=0;
for i = 1:a
    for j = 1:b
        if(((i+1)<=a) && ((j+1)<=b))
            r= abs(Io(i,j) - Io(i+1,j));
            t= abs(Io(i,j) - Io(i,j+1));
            l=abs(If(i,j) - If(i+1,j));
            u=abs(If(i,j) - If(i,j+1));
            o = o+ r + t;
            p= p +l+ u;
            r;
            t;
            l;
            u;
            o;
            p;
        end
    end
end
y =(o./p )