I have established a macro to isolate and characterize some fat crystals.

After running the macro you get a white image with black ellipses.
So, How could I isolate these particles (ellipses) from this image? In other words, I would like to isolate each particle and save them separately.


ps: I just want to extract every single particle (ellipse) on its own. I don't want to maintain the particle in the same white image. I want to extract to a new one in order to save every particle in different images.


Thank you, Karina