I am a new user of OpenCV.
I am suprised why SIFT is not avaliable in OpenCV.
The only patent for SIFT algoritm is; David G. Lowe, US Patent 6,711,293. Provisional application filed March 8, 1999. Asignee: The University of British Columbia
This patent has been EXPIRED in March 7, 2020*.
Currently there is no legal restriction OpenCV to include SIFT algoritm.
My question; Is there any other legal restriction or only OpenCv developers miss the patent expire date ?
- link to patent document https://patents.google.com/patent/US6711293B1/en