main.py

import numpy as np
import cv2
import pickle

face_cascade = cv2.CascadeClassifier('data/haarcascade_frontalface_alt2.xml')
eye_cascade = cv2.CascadeClassifier('data/haarcascade_eye.xml')


recognizer = cv2.face.LBPHFaceRecognizer_create()
recognizer.read('trainer.yml') 

labels = {}

with open('label.pickle', 'rb') as file:
    og_labels = pickle.load(file)
    labels = {v:k for k , v in og_labels.items()}


cap = cv2.VideoCapture(0)

while True:
    ret , capture = cap.read()
    
    gray = cv2.cvtColor(capture , cv2.COLOR_BGR2GRAY)
    faces = face_cascade.detectMultiScale(gray , scaleFactor= 1.5, minNeighbors = 5)
    for (x, y , w, h) in faces:
        #print(x, y ,w, h)
        roi_gray= gray[y:y+h, x:x+w]
        roi_color= capture[y:y+h, x:x+w]  
        
        #Recognize
        id_ , conf  = recognizer.predict(roi_gray)
        if conf >=45: # and conf <= 85:
            print(id_)
            print(labels[id_])         
            font = cv2.FONT_HERSHEY_SIMPLEX
            name = labels[id_]
            color = [255,255,255]
            stroke = 2
            cv2.putText(capture, name ,(x ,y) ,font , 1 ,color ,  stroke , cv2.LINE_AA)
             
        
        img_item = 'my_image.png'
        cv2.imwrite(img_item , roi_gray)
        
        color = (255, 0, 0) #BGR
        stroke = 2
        end_cord_x = x + w
        end_cord_y = y + h
        cv2.rectangle(capture, (x, y) , (end_cord_x , end_cord_y), color , stroke)
        
        eyes =eye_cascade.detectMultiScale(roi_color)
        for (ex, ey ,ew, eh) in eyes:
            cv2.rectangle(roi_color , (ex,ey) , (ex+ey, ey+eh) , (0, 255, 255),2)

        
    cv2.imshow('frame' , capture)
    if cv2.waitKey(20) & 0xFF == ord('q'):
        break
    
cap.release()
cv2.destroyAllWindows()