Round Threshold?

I want to set Matlab to crop out any objects below a certain "roundness" using regionprops. I have the idea down. Can someone help me with how to implement it?

[Sean de Wolski]

What do you have so far?

Hint:

Use the PixelIdxList field of CC, the output from BWCONNCOMP. This gives you direct access to the pixels you need to kill for each object you wish to kill.