installing extra modules

edit

guidance or explanation of what exactly is happening would be also of great help. thank you

cd /Downloads/opencv-3.0.0-rc1 # your src dir
mkdir build                      # your build dir
cd build                                  
cmake  -DOPENCV_EXTRA_MODULES_PATH=/Downloads/opencv_contrib-master/modules .. # last 2 dots point to src dir

I installed the modules successfully. But still i am getting the same error.. ie:It have not solved the problem i was originally facing,which is error: ‘FaceRecognizer’ was not declared in this scope cv::Ptr<facerecognizer> model, mouthModel;

To which i was suggested to install the extra modules. But that doesnt seem to help either.

• "I installed the modules successfully" - good ;)
• "‘FaceRecognizer’ was not declared in this scope" - did you forget a namespace ? Ptr<face::FaceRecognizer> reco = face::createLBPHFaceRecognizer();

I actually tried that, but i get the following error.

error: ‘face’ cannot appear in a constant-expression cv::Ptr<face::facerecognizer> model, mouthModel;

rather start a new question for that, and show the relevant code ?

Ok....I was thinking of the same. Thank you. Appreciate your prompt reply :-)

@berak No extra modules found in folder: /Downloads/opencv_contrib-master/modules . What has happened ??