How to calculate the maximum distance between two boundries

Dear all,

How can I find the distance between two boundaries. The line in red 'A' can you please let me know the algorithm for that as I am new to Matlab

Answer 1

[Image Analyst]

What distance(s)? All of them, or just A? If all, distances from every circle point to every curve point? Or just those along radial direction? Have you tried improfile() (in the Image Processing Toolbox) and find()?

[Mahmoud]

I would like to get the maximum distance between the circle and the irregular shape. The line should be perpendicular to the circle. As per the image, the maximum distance that is perpendicular to the circle is A. In the real image, of course, the red line is not there. it is only to show what distance I want.

I appreciate your help

[Image Analyst]

What is there? Some equations? A binary image? A list of x,y coordinates? Why aren't use just simply using the Pythagorean theorem to find the max distance of the curve to the circle center and then subtract the radius??? That's what I'd do. It's just one call to sqrt() and one call to max(). Do you need the formula (2 lines of code) to do that?