find ellipse in image

Hi. I need to automatically find six ellipses in an image like this:

I tried using imfindcircles, but it did not work, because the figures are not circles. Any hint?

Thanks in advance.

Answer 1

[Alistair Boettiger]

If you just need the centers of the six ellipses, just increase the sensitivity of imfindcircles. It will tolerate rather non-circular features. You can use a tight radius cutoff to reduce any background.