Finding the difference between two images algorithm.
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Hello,I am trying to write code to find the difference between two similar images. My way was: make them gray (with rgb2gray) subtract and then add threshold) but it gave me nothing.
The way I am working isnt correct ? maybe I am missing something ?
3 commentaires
Rik
le 28 Juil 2018
There is a lot that can go wrong here. We can guess what went wrong, but the best way is if you upload example images and the code you were using.
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Image Analyst
le 28 Juil 2018
Subtracting will clip negative values at zero - not good! Cast to double before that.
Try the built-in functions immse() or psnr().
If you want to do it yourself, check out imabsdiff().
2 commentaires
Image Analyst
le 29 Juil 2018
Are you sure you're displaying the difference image with [] - otherwise it will do that.
differenceImage = abs(double(im1gray)-double(im2gray));
imshow(differenceImage, []);
Savita Hanchinal
le 21 Avr 2021
please anyone help me ...which algorithm is best for fake currency detection
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