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C:\ci\opencv_1512688052760\work\opencv_contrib-3.3.1\modules\face\src\lbph_faces.cpp:400: error: (-5) This LBPH model is not computed yet. Did you call the train method? in function cv::face::LBPH::predict

Hi, I get an error.

Here is My Code

import cv2 import numpy as np faceDetect=cv2.CascadeClassifier('haarcascade_frontalface_default.xml') cam=cv2.VideoCapture(0); rec=cv2.face.LBPHFaceRecognizer_create(); rec.read("recognizer/trainningData.yml") id=0 font = cv2.FONT_HERSHEY_SIMPLEX while(True): ret,img=cam.read(); gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY) faces=faceDetect.detectMultiScale(gray,1.3,5); for(x,y,w,h) in faces: cv2.rectangle(img,(x,y),(x+w,y+h),(0,0,255),2) id,conf=rec.predict(gray[y:y+h,x:x+w]) cv2.putText(img,str(id),(x,y+h),font,1,255)

cv2.imshow("Face",img);
if(cv2.waitKey(1)==ord('q')):
    break;

cam.release() cv2.destroyAllWindows()

Can you help ?