How to add all extra modules of OpenCV-contrib to OpenCV library?

Asked Jan 13 '20 at 20:02

Active Jan 13 '20 at 20:07

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I have built OpenCV with extra modules based on these instractions by providing the path: C:/opencv/opencv-4.2.0/opencv_contrib-4.2.0/modules in OPENCV_EXTRA_MODULES_PATH in CMake GUI.

However, when I want to use MultiTracker based on this page I face this error:

Cannot open include file: 'samples_utility.hpp': No such file or directory

This error comes from this line:

#include "samples_utility.hpp"

I know samples_utility.hpp is a file in opencv_contrib-4.2.0\modules\tracking, but why is it not found in the built libraries? Do I have to add it from CMake or should I build OpenCV from scratch?

edited Jan 13 '20 at 20:07

asked Jan 13 '20 at 20:02

Hadi GhahremanNezhad

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It's [an example](https://github.com/opencv/opencv_contrib/blob/master/modules/tracking/samples/samples_utility.hpp), not a part of the library. – Dan Mašek Jan 13 '20 at 20:28
So how should I add it to OpenCV? Should I add it to each project that I want to use? – Hadi GhahremanNezhad Jan 13 '20 at 20:48
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If you need the single function it provides, then sure, you can add a copy of the file to your project. – Dan Mašek Jan 13 '20 at 21:03

How to add all extra modules of OpenCV-contrib to OpenCV library?

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