How to use opencv 3 with opencv_contrib

cmake

asked 2016-04-22 22:48:35 -0600

Nbb
731 ●12 ●23 ●38

updated 2016-05-15 09:42:40 -0600

Hi

I am trying to use opencv_contrib code with opencv 3. I am following this instructions here https://github.com/Itseez/opencv_contrib

Step 2 says to select the opencv source code folder and the folder where binaries will be built (the 2 upper forms of the interface)

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Is the source code folder = sources folder ? And where is the folder where binaries will be built ? I have googled for other guides but they are all confusing as well. Help thanks

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answered 2016-04-23 00:47:23 -0600

berak
32993 ●7 ●81 ●312

updated 2016-04-23 00:58:41 -0600

there are actually 3 relevant folders here,

the sourcefolder. this is where CmakeLists.txt is. in your case it is the "sources" folder, and it is admittedly confusing, that it looks different from https://github.com/itseez/opencv
the build folder. this can be anywhere on your machine, you need ~2.5gb free disk space for the temporary build files, and you can remove it later, once everything is ok
the install folder. this is , where the final libs, dlls and include files end up. you specify it with cmake -DCMAKE_INSTALL_PREFIX

please make sure, you use latest opencv master version (3.1, atm.)

so, as an example, create a build folder, say, d:\mybuild, run cmake from that folder, set the install prefix to d:\opencv\final, and the last cmake argument should be the path to d:\opencv\sources

finally, don't forget to adjust the PATH, so it points to your newly build dlls, not the old, prebuilt ones !