Trainer.py

import imp
imp.find_module("cv2")
import cv2
import numpy as np
from PIL import Image
import os
recognizer = cv2.createLBPHFaceRecognizer()
detector= cv2.CascadeClassifier("haarcascade_frontalface_alt2.xml");

def getImagesAndLabels(path):
    imagePaths=[os.path.join(path,f) for f in os.listdir(path)] 
    faceSamples=[]
    Ids=[]
    for imagePath in imagePaths:
        pilImage=Image.open(imagePath).convert('L')
        imageNp=np.array(pilImage,'uint8')
        Id=int(os.path.split(imagePath)[1].split(".")[1])
        faces=detector.detectMultiScale(imageNp)
        for (x,y,w,h) in faces:
            faceSamples.append(imageNp[y:y+h,x:x+w])
            Ids.append(Id)
    return faceSamples,Ids


faces,Ids = getImagesAndLabels('dataSet')
recognizer.train(faces, np.array(Ids))
print(len(Ids))
print("Training Complete")
recognizer.save('trainer/trainer.yml')