Save an image once the face is detected

[Travloper]

I want to save an image once the face is detected. But i can't find any solutions for that. Please help

[Willjay90]

you can easily take a screenshot with specific (given) boundary of the image.
https://stackoverflow.com/a/25445629/5571327

[rhcpfan]

What if you'd like to take it straight from the pixel buffer?