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2018-05-30 10:55:04 -0500 received badge  Student (source)
2013-08-27 22:10:46 -0500 asked a question patent - FACE RECOGNITION

It is well known in the OpenCV community that the Haar object detector, SIFT & SURF object recognition algorithms are patented.

My question if FACE RECOGNITION is patent-free and can I use it commercially?

Thanks & Kudos OpenCV!