Reshaping noisy coin into a circle form

Question

I\'m doing a coin detection using JavaCV (OpenCV wrapper) but I have a little problem when the coins are connected. If I try to erode them to separate these coins they loose

Answer 1

OpenCV has a function called HoughCircles() that can be applied to your case, without separating the different circles. Can you call it from JavaCV ? If so, it will do what you want (detecting and counting circles), bypassing your separation problem.

The main point is to detect the circles accurately without separating them first. Other algorithms (such as template matching can be used instead of generalized Hough transform, but you have to take into account the different sizes of the coins.