I am using java library of open cv 2.4.7. I don't know how to use its FaceRecognizer class. when I looked at the definition of this class I found this.
Ptr_FaceRecognizer createEigenFaceRecognizer(int num_components = 0, double threshold = DBL_MAX)
Return type 'Ptr_FaceRecognizer' is not supported, skipping the function is there any other method to use this algorithm? As I am very new in the field of open cv so Please suggest the way to perform face recognition by using open cv java library.