adding in xml model and also basic code

main.py

@@ -0,0 +1,28 @@
+import cv2
+
+# Load the cascade
+face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
+
+# To capture video from webcam.
+cap = cv2.VideoCapture(0)
+# To use a video file as input
+# cap = cv2.VideoCapture('filename.mp4')
+
+while True:
+    # Read the frame
+    _, img = cap.read()
+    # Convert to grayscale
+    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+    # Detect the faces
+    faces = face_cascade.detectMultiScale(gray, 1.1, 4)
+    # Draw the rectangle around each face
+    for (x, y, w, h) in faces:
+        cv2.rectangle(img, (x, y), (x+w, y+h), (255, 0, 0), 2)
+    # Display
+    cv2.imshow('img', img)
+    # Stop if escape key is pressed
+    k = cv2.waitKey(30) & 0xff
+    if k==27:
+        break
+# Release the VideoCapture object
+cap.release()