How can I determine the diameter (inner and outer) of the ring profile?

I want to calculate the center and the diameter of the ring profile. It would be great if someone can suggest me any algorithm or the direction to solve this.

Thank you Naresh

Answer 1

[Greg Dionne]

Try this link: https://www.mathworks.com/help/images/detect-and-measure-circular-objects-in-an-image.html