I can't imagine how that would be possible. when you add a new image to C2, that's it.. C2 auto collision detects and you have to edit from there. Perhaps you could look into looking at the images perhaps and see if there is anything you can do to them to make the images more defined?
I don't know what the images look like that you're using and I know that C2 can definitely mangle images sometimes, sometimes ones that even seem pretty clearly defined.
Sorry I don't have a solution for you that would help your situation. Someone else might know something I don't (not unlikely) but my gut tells me the answer is no.