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you missed the newly added namespace face: Ptr<cv::face::FaceRecognizer> faceRecognizer = cv::face::createFisherFaceRecognizer(0, 123.0);

also note, that you have to use cv::Ptr , you can no more create an instance "on the stack".

you missed the newly added namespace face: Ptr<cv::face::FaceRecognizer> faceRecognizer = cv::face::createFisherFaceRecognizer(0, 123.0);

also note, that you have to use cv::Ptr , you can no more create an instance "on the stack".

you missed the newly added namespace face: Ptr<cv::face::FaceRecognizer> faceRecognizer = cv::face::createFisherFaceRecognizer(0, 123.0);

also note, that you have to use cv::Ptr , you can no more . (you can't create an instance of an interface "on the stack".stack".)

see updated tutorials and samples