Downloading opencv with extra modules create a directory called opencv-30 and create two other folders in the directory: build and source the builddirectory is used for saving the result of the building process, and the source folder will contain all of the opencv and its extra modules sources download opencv sources together with the extra. Download opencv extra modules. I'm using opencv regularly with visual c++ 2015 and 2017 i build opencv from the source directly without following the link you posted i suggest you clone opencv and opencv extra modules from git.
download opencv extra modules
@berak no extra modules found in folder: /downloads/opencv_contrib-master/modules what has happened ?? what has happened ?? giorgos_ts ( 2016-04-02 14:19:38 -0500 ) edit. Build with extra modules. in step 2. build opencv with cmake, press configure; set up opencv_extra_modules_path to proper path(<opencv_contrib>/modules) press configure again, then generate; to see more details instructions, see opencv_contrib readme. Repository for opencv's extra modules. contribute to opencv/opencv_contrib development by creating an account on github..
