import numpy as np
import cv2

faceCascade = cv2.CascadeClassifier('data.xml')

cap = cv2.VideoCapture(0)
cap.set(3,640) # set Width
cap.set(4,480) # set Height
count = 0
while True:
    ret, img = cap.read()
    img = cv2.flip(img, 1)
    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    faces = faceCascade.detectMultiScale(
        gray,
        scaleFactor=1.2,
        minNeighbors=5,     
        minSize=(30, 30)
    )
    
    for (x,y,w,h) in faces:
        cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)
        roi_gray = gray[y:y+h, x:x+w]
        roi_color = img[y:y+h, x:x+w]

        cv2.imwrite("dataset/User." + str(count) + ".jpg", img)
        count += 1
    cv2.imshow('video',img)

    k = cv2.waitKey(30) & 0xff
    if k == 27: # press 'ESC' to quit
        break
    elif count >= 3000: # Take 30 face sample and stop video
        break

cap.release()
cv2.destroyAllWindows()