What object detention algorithms used by Open CV are patented?

asked 2013-10-22 16:51:15 -0600

_Robert gravatar image

I read here that the HAAR tree based detection might be covered by the patents:


What other algorithms are patented? What about Local binary patters?

edit retag flag offensive close merge delete


As far as I know, only surf and sift are patented.nonfree module.Please correct me if I am wrong.

stereomatching gravatar imagestereomatching ( 2013-10-22 17:11:08 -0600 )edit

@stereomatching thanks for your reply. Forgive my ignorance, what are SURF and SIFT? Are they used as part of any object detection algorithms?

_Robert gravatar image_Robert ( 2013-10-22 17:33:48 -0600 )edit

Not 100% sure(I am far from an expert), as far as I know, surf and sift are features extraction and description algorithms, those features extract by surf, sift could be used to detect object, tracking, find homography matrix and so on.

stereomatching gravatar imagestereomatching ( 2013-10-22 18:56:54 -0600 )edit