Server Error when running

[tiagojdias]

Hi guys, i tried to use installation guide but i had a lot of errors because of contrib.cpp ... i assume that it's not working for OpenCV 3+ since you guys used OpenCV 2.x.

So, i tried to force in the CMakeLists.txt the OpenCV still not working. So, i cloned the actual repo in this page. Finally, it compiled. Although as soon as i trigger the recognition server it gives some errors ... The output is bellow:

[ INFO] [/corobot_face_recognition]: Reading images from .../test_ws/src/corobot-kinetic/corobot_face_recognition/face_database.
[ INFO] [/corobot_face_recognition]: Reading images completed
[ INFO] [/corobot_face_recognition]: 3 Subjects: adiba, ronit, zack_butler,
[ INFO] [/corobot_face_recognition]: Training started.
OpenCV Error: Bad argument (Empty training data was given. You'll need more than one sample to learn a model.) in train, file /tmp/binarydeb/ros-kinetic-opencv3-3.2.0/opencv_contrib/face/src/eigen_faces.cpp, line 54
[ INFO] [/corobot_face_recognition]: /tmp/binarydeb/ros-kinetic-opencv3-3.2.0/opencv_contrib/face/src/eigen_faces.cpp:54: error: (-5) Empty training data was given. You'll need more than one sample to learn a model. in function train

[ INFO] [/corobot_face_recognition]: Only ADD_IMAGES mode will work. Please add more subjects for recognition.
init done

Thanks in advance,
Best regards.