On Sunday, May 22, 2022, Phyllis Smith via Cin <[email protected]> wrote:
Checked the 2 patches by Andrew into GIT. Both 2018 and 2020 opencv versions work on Fedora 32 and Ubuntu 16 but I did not test on an older O/S that had the older cmake.
PS: I was thinking that since compiling the latest version on git
works (4.5, on https://github.com/opencv/opencv.git), can we try putting this in CinGG git? I mean instead of the current version 3.
The whole reason for not updating OpenCV is because of licensing with the Surf algorithm which is necessary for FindObj to work well. The later versions (at that time) had the Surf algorithm removed as no longer non-free.
At least here https://github.com/opencv/opencv_contrib/blob/4.x/modules/xfeatures2d/src/su... I still see #ifdef OPENCV_ENABLE_NONFREE while may be patents for this exactly algo already expired? ah no, only SIFT patent expired... https://github.com/scikit-image/scikit-image/issues/4499
So if you can verify that Surf is again free and part of the released OpenCV version 4.5, then we can certainly upgrade and that would be very good.