Extract multiple radius from an image

Hi, I have a grayscale image of quasi-circular objects. I have to compute their radius. I can extract these objects applying a threshold on the image. So now I have a b/w image with my quasi circular objects. In some way I found the centre of this objects. Now I want to compute with a for cycle their radius, extracting from the b/w image the columns corresponding to x-coordinates of the centers and calculating the length of the sequence of the "1" in those columns. How can I do this? Thanks

Answer 1

[Ashish Uthama]

If you have the newer version with the Image Processing Toolbox, the imfindcircles might be useful (depending on the 'circularity' of your objects).

You could also try using the regionprops function in the Image Processing Toolbox to get characteristics of each object. You could then use the 'Area' and 'Perimeter' properties to deduce a rough estimate of the radius.