Attribute Error: module 'cv2' has no attribute 'face'

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Berak,

Really appreciate your help on this!

I am still a little confused about the cmake command used in the link above:

$ cd <opencv_build_directory>
$ cmake -DOPENCV_EXTRA_MODULES_PATH=<opencv_contrib>/modules <opencv_source_directory>

When I downloaded and unzipped opencv-3.3.0 and opencv_contrib-3.3.0, these folders were created automatically.  Based on this, I determined that "opencv_build_directory" is ~/opencv-3.3.0/build, "opencv_contrib/modules" would be ~/opencv_contrib-3.3.0, etc.

However, when I execute the command
$ cmake -DOPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.3.0/modules ~/opencv-3.3.0
I get the following message:
CMake Error: the source directory "/home/pi/opencv-3.3.0" does not appear to contain CMakeLists.txt.

Any reason why that is?

Thank you!

Huy

does/home/pi/opencv-3.3.0 contain a CmakeLists.txt file ?

folder should look exactly like here: https://github.com/opencv/opencv

Berak,

Thanks again for your reply!

I must have accidentally deleted all of the opencv-3.3.0 contents except for the \modules folder, that was why I could not find the CMakeLists.txt.

Anyway, I got opencv to work with the pip install command but it is opencv-2.4.9.1. I could never get opencv-3.3.0 to work properly. I tried to unzip opencv-3.3.0 and opencv_contrib-3.3.0 again and rebuild opencv with the following command lines:

$ cmake -DOPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.3.0/modules ~/opencv-3.3.0
$ make -j5

but it yield "fatal error" in the middle of the compile. Unfortunately, it stopped at about 60% in the progress bar so I never could see if the extra_modules would get installed or not.

Maybe I should reinstall everything from scratch to make it work?

Hu

wait, if you have 2.4.9 running, you can just use cv2.createEigenFaceRecognizer() and such.

(it's just a pity, because 2.4.9 is as old and ugly as hell, otherwise)

to mend the 3.3 issues, we need to know your errors (we're not psychics !)

Berak, that's exactly where I am at! I am currently able to use cv2.createEigenFaceRecognizer() function. But I'll try to do a fresh install of opencv-3.3.0 and see if I can get through. Will report back here with (or without) errors :)! Thanks.

well, again if errors happen, you've got to report those, else we cannot help !

Berak,

I tried to reinstall and fix the path to the extra modules path again but met with the following error message:

/home/pi/opencv-3.3.0/modules/core/src/system.cpp:768:5: error: expected primary-expression before ';' token modules/core/CMakeFiles/opencv_core.dir/build.make:1220: recipe for target 'modules/core/CMakeFiles/opencv_core.dir/src/system.cpp.o' failed make[2]: * [modules/core/CMakeFiles/opencv_core.dir/src/system.cpp.o] Error 1 CMakeFiles/Makefile2:2509: recipe for target 'modules/core/CMakeFiles/opencv_core.dir/all' failed make[1]: [modules/core/CMakeFiles/opencv_core.dir/all] Error 2 Makefile:160: recipe for target 'all' failed make: ** [all] Error 2

Any suggestions? Thanks!

Huy