Mathematics of Harris corner point detection

1. How does Harris Corner Detection works?
2. What is the Harris method?
3. What is window function in Harris Corner?

How does Harris Corner Detection works?

The Harris corner detector works by taking horizontal and vertical derivatives of the image and looking for areas where both are high, this is quantified by the Harris corner descriptor which is defined in our case as the matrix �and the descriptor is .

What is the Harris method?

The idea behind the Harris method is to detect points based on the intensity variation in a local neighborhood: a small region around the feature should show a large intensity change when compared with windows shifted in any direction.

What is window function in Harris Corner?

The window function is either a rectangular window or a Gaussian window which gives weights to pixels underneath. We have to maximize this function E(u,v) for corner detection. That means we have to maximize the second term.