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Find the position of distinct area, between two images by using HOG Features

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Fatima on 19 Jul 2016
Edited: Fatima on 19 Jul 2016
Suppose we have two images. Both images are the same. The only different between them is that one of the images has a small filled circle on center. I can extract and visualize HOG features like this example:
And then calculate the Euclidean distance between two images by using hog features. In this case all hog features will be zero except the parts which related to filled circle area.
BUT I don’t know how can I find the position of filled circle (the different area) to highlight it.
Hint: for example, for detecting people we can use this method:
I = insertObjectAnnotation(I,'rectangle',bboxes,scores);


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