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I am using OpenCV with C++ on Ubuntu 16.01 I have to use SURF.

I have already installed opencv_contrib correctly (i followed this link) but when i try to write the path:

#include "xfeatures2d/xfeatures2d.hpp

in my .hpp program I found this error:

#include "xfeatures2d/xfeatures2d.hpp : No such file or directory

Also i tried to put all the directory but it doesn't work either.

I'm not an expert in opencv so i don't know if I have to change any CmakeList or something.

has anybody any ideas?

Oleksii
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Carlos Justo
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  • If I'm not mistaken, you don't need opencv_contribs for SURF asf Opencv itself has its own implementation. Generally, if you can avoid contribs, just do so since it relies on a lot of obsolete code and is not very well tested. As for your error, I think it would be difficult to help you if you don't show the relevant cmake and compilation flags etc. – Ash Oct 19 '18 at 18:10
  • @ash I think that i need the library "xfeatures2d" to use SURF because qt and visual studio (i also tried in windows) dont recognise the command "SurfFeatureDetector" when i triy to compile the program. Moreover, there is too many things in the two foulders and i dont know which archives i need to put here. – Carlos Justo Oct 19 '18 at 18:24

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Try to include path:

INCLUDEPATH += "C://opencv_contrib-3.2.0/modules/xfeatures2d/include"

in your .pro file.

Thai Nghiem
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