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For my project I made changes and added two functions in hog.cpp under opencv/modules/gpu/src. Following are the two functions that I added to get the functionality that I want.

  • getDescriptorsMultiScale
  • getDescriptorsBlock

I also have to add the definition of these two functions under opencv/modules/gpu/include/opencv2/gpu/gpu.hpp

At the moment I am just replacing these files under specified folders mentioned above. My supervisor asked me to separate the original OpenCV implementation and my own version and add symbolic link to my implementation. At the moment I have no clue how I can do that. Can someone please let me know how I can do that please.

EDIT
I rename the original opencv file with hog_original.cpp and created another directory structure similar to opencv and created the file hog.cpp(my implementation) and when I tried to link the file. I got the following error. ln: failed to create symbolic link file exist

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    Your question could have been: how do I make a symbolic link? you would probably have found a lot of results at google ;) Commented Sep 13, 2015 at 2:33
  • Make sure you do it like ln -s /your/file.cpp /opencv/folder/file.cpp, and use an absolute path for your file. Anyway, you can also copy-paste it. Commented Sep 15, 2015 at 11:33
  • I did and still the same error @alesegdia Commented Sep 15, 2015 at 12:58
  • you can see the commaind ln -s /home/shah/Projects/TUE_Multiclass_Detector/src/opencv/modules/gpu/src/hog.cpp /home/shah/Downloads/opencv-2.4.9/modules/gpu/src/hog_original.cpp Commented Sep 15, 2015 at 12:58
  • ln -s /home/shah/Projects/TUE_Multiclass_Detector/src/opencv/modules/gpu/src/hog.cpp /home/shah/Downloads/opencv-2.4.9/modules/gpu/src/hog.cpp Commented Sep 15, 2015 at 13:10

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Not sure, but I think it's just to place OpenCV files elsewhere and

ln -s /path/to/your/files.[hc]pp /path/to/opencv/folder/files.[hc]pp

then compile with your version of those files instead of OpenCV ones.

In other words, copy-paste your files into OpenCV source folder and compile to test your implementation, but keep original OpenCV files safe.

More info on symbolic links

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I rename the original opencv file with hog_original.cpp and created another directory structure similar to opencv and created the file hog.cpp(my implementation) and when I tried to link the file. I got the following error. ln: failed to create symbolic link file exist @alegesdia

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