I had a difficult time building OpenCV (v3.x) for C++, and I don't want to risk breaking the installation. But I'd like to experiment with the ximgproc/contrib/DNN libs. Is it possible to build them separately and add them to the existing OpenCV install?
no, it is not possible to build modules, without (re)building their dependancies (e.g. core)
you also have to use exactly the same version for opencv and opencv_contrib (e.g. you cannot build current contrib master brach with your opencv3 version)
but you can choose a custom install location, to keep your current (working) install intact:
cmake -DCMAKE_INSTALL_PREFIX=/some/seperate/install/path
and adjust the PATH (windows) or LD_LIBRARY_PATH (linux), so your program will find the new so's.
Thanks for the clarification, Berak. I thought that I had selected all those additional libraries at the time that I built OpenCV, but evidently not. The build process was so tedious that I didn't want to risk blowing up the existing installation, but perhaps I'll summon the nerve to do that with your suggested mods. :-) I do wish that the build process could be simpler.
Berak, You once thought that I had posted the same question multiple times. That was evidently some type of website bug. I'm still seeing the same question appearing multiple times, including this one about ximgproc. Just wanted to let you know that I did not do that. Sometimes refreshing my 'questions page' shows subjects in different order, or duplicated arbitrarily. I haven't seen this on other sites.
Asked: 2019-01-23 03:13:14 -0600
Seen: 700 times
Last updated: Jan 23 '19
