Creating a ROI from a contour

I am attempting to create an ROI from the contour of an image, in this case i am checking comparing a benign melanoma image.

I have marked out the contour of the original image in binary 

is there a way to now overlay this contour ontop of the original image, and use it as an ROI?

this way i can check specific features inside the ROI and benign melanoma image.