Build Face Detection using Python

This Article is written by Prattay Chakrabarty

Requirement-

1. python 3.6
2. numpy module 
3. opencv module   

Step----

step1--  open command prompt 

1.pip install numpy

then

2.pip install opencv-python

Code---

#developed by Prattay Chakrabarty 

import cv2

import numpy as np

face_cascade = cv2.CascadeClassifier(

        'haar_cascade_files/haarcascade_frontalface_default.xml')

if face_cascade.empty():

raise IOError('Unable to load the face cascade classifier xml file')

cap = cv2.VideoCapture(0)

scaling_factor = 0.5

while True:

    

    _, frame = cap.read()

    frame = cv2.resize(frame, None, 

            fx=scaling_factor, fy=scaling_factor, 

            interpolation=cv2.INTER_AREA)

    

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    

    face_rects = face_cascade.detectMultiScale(gray, 1.3, 5)

   

    for (x,y,w,h) in face_rects:

        cv2.rectangle(frame, (x,y), (x+w,y+h), (0,255,0), 3)

    

    cv2.imshow('Free Python Face Detector By Bongcode.com', frame)

    

    c = cv2.waitKey(1)

    if c == 27:

        break

cap.release()

cv2.destroyAllWindows()

#you can get the code in the project folder

Run The Code---

You Have to download the folder from the link--  Click Here

then open the face_detector.py file .

and run the file.

Thanks Everyone :)

Any Question or Doubt You Can Ask .