Expired US patent on SIFT

asked 2020-11-29 17:25:20 -0600

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/US6...

edit retag flag offensive close merge delete

Comments

Which opencv version? -Update your code read https://github.com/opencv/opencv/pull...

LBerger ( 2020-11-29 20:12:42 -0600 )edit

open CV 4.4.0

rafetirmak ( 2020-11-30 15:32:49 -0600 )edit

add a comment

1 answer

Sort by » oldest newest most voted

answered 2020-11-30 02:11:53 -0600

berak
32993 ●7 ●81 ●312

updated 2020-11-30 02:13:48 -0600

indeed, the patent expired, so SIFT could be moved away from the nonfree xfeatures2d module in the opencv_contrib repo.

opencv versions from 4.4.0 or 3.4.11 onwards have it in the features2d module in the main repo, and there are no restrictions to use it.

edit flag offensive delete link

Comments

This should be GREAT ;

"indeed, the patent expired, so SIFT could be moved away from the nonfree xfeatures2d module in the opencv_contrib repo."

rafetirmak ( 2020-11-30 15:33:39 -0600 )edit

let me clarify again, it was moved into the main repo in 4.4, and you can freely use it.

berak ( 2020-12-03 09:38:43 -0600 )edit

add a comment

Links

Question Tools

1 follower

Stats

Asked: 2020-11-29 17:25:20 -0600

Seen: 3,275 times

Last updated: Nov 30 '20

Expired US patent on SIFT edit

Comments

1 answer

Comments

Links

Question Tools

Stats

Related questions

Expired US patent on SIFT