windows crop problem

[minwook96]

I solved the cropping problem in Windows operating system with opencv.

[lukasalexanderweber]

Thanks for your contribution and great that it works!

I wouln't like to make it dependable on the plattform, since it works for me in Windows (your error is's 'just' for 32 bit machines). However, we could offer your cropping functionality as alternative to the numba cropping.