Hi everyone, I am a student. Recently I've been building a Face recognize project using opencv but I dont know where to start. I successfully build my Face detection using OpenCv4Android by reading opencv face detection sample. Now I start to build Face recognize part, I read Opencv document and search google for tutorial that I can actually follow but i failed (there lots of tutorial using javacv but I want to use OpenCv4Android instead) :( can anyone help me with the step by step tutorial about what should i do to using face recognize in OpenCV4Android SDK? Big thanks to you. Additional: - I find out about FaceRecognizer.java class in opencv/contrib - I find facerec.java in OpenCV4android folder - I read somewhere and try the method FaceRecognize model = createLBPHFaceRecognizer() ---> but the method createLBPHFaceRecognizer() return error not found. where can i find and use this method? Please help me what I need to do next? A lot of thanks!!!!!