OpenCV Background subtraction 3.2 version example (for MOG, MOG2, GMG, KNN)

This is example for background subtraction on opencv 3.2 version

previously, I post 2.7 version example on here.

But some usage is changed, and knn subtraction method is added.

Many people ask that example based on opencv 3.2

refer to below source code

Thank you.

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