Finding circle in binary image (R, not matlab)

Question

How would I extract the circular area of a binary image which looks like:

enter image description here

The two rods emerging from the side of the circle are noise.

I know of the hough transform in Matlab. However, I am using R and can't seem to find anything similar.

Ideas anyone?

This is an R specific question, and I think you're going to get a better response on Stack Overflow. Should I migrate it? — Phonon, Mar 12, 2013 at 23:54

Scott · Accepted Answer · 2013-03-13 16:56:32Z

-1

On page 4 of this document describing the R PET package, there's documentation of the Hough transformation. That's probably what you want.

answered Mar 13, 2013 at 16:56

Scott

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$\begingroup$ I'm a little confused on how to use this for detection of circles $\endgroup$
– Omar Wagih
Mar 13, 2013 at 18:32
$\begingroup$ How to call the function or how to install it? $\endgroup$
– Scott
Mar 13, 2013 at 19:22
$\begingroup$ I understand how to do both. The returned data is a matrix of parameters of the the original matrix. Am I correct? How do I use that to approximate circles in the image $\endgroup$
– Omar Wagih
Mar 13, 2013 at 19:51

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