opencv - Haar Object Detection patent issue -


i know if of haar object detection api (python) in opencv patent protected? understand sift, surf, & haar cascade patented, not clear means regard of haar object detection api.

if indeed patent protected, viable alternatives object detection (namely human anatomy)?

api's can not patented. amounts merely code. however, api's used in process/machine/method/etc. can part of patent, because api used manipulate data in way. instead, api's can copyrighted (like book or song).


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