Hough Transform for Circles

In this video, I have explained how we can use Hough transform for circles.

[ramkumarsakthivel]

Great video... there is a small mistake in the equation of the circle. It should be (x-a)^2+(y-b)^2=r^2 and not just r.

[ohmy__gah]

This helped me greatly to understand Hough Transform! Thank you

[akainu]

bro how can i modify your code for general curve like lame curve or an ellipse?

[ayushprakash]

correction : in the first slide, the equation of the circle should contain r^2 and not r

[slw]

I dont understand. I have fixed R and I know x, y point of edge. How I can get(calculate) a and b to increment accumulator? Which a, b I must use? Which range of a, b? From what to what?

[christianbarnes]

How did you implement detection of more than one circle with different radius