adding noise to images
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hi
i need to add x% noise ONLY to black areas of my image (image is grayscale) so x% of the black areas be replaced with white (changing 0 to 255)
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David Hill
le 15 Avr 2021
Modifié(e) : David Hill
le 15 Avr 2021
black=find(image==0);
white=randperm(length(black),floor(x/100*length(black)));
image(white)=uint8(255);
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David Hill
le 15 Avr 2021
Modifié(e) : David Hill
le 15 Avr 2021
You could put in a range. My guess is that you think it is black but is not (==0).
black=find(image<10);%change range until you are satisfied.
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