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replacement of for loop in matlab

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Khawaja Asim
Khawaja Asim 2011-9-15
for i=1:size(img,1)
for j=1:size(img,2)
if img(i,j)<=25
img(i,j)=255;
end
end
end
can anyone please tell me about the replacement of this piece of code in just one line..? I know it can be replaced with one line, but i am not able to it correctly....

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Andrei Bobrov
Andrei Bobrov 2011-9-15
img(img <= 25) = 255

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