Create Video_face.py (GeeksforGeeks-VIT-Bhopal#82)

* Create stop_watch.py

* Create Calculation_code.py

* Create Video_face.py

Author: abhaypawar

Face Detection/Video_face.py

@@ -0,0 +1,34 @@
+import cv2
+face_cascade=cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
+eye_cascade=cv2.CascadeClassifier('haarcascade_eye.xml')
+
+
+cap = cv2.VideoCapture(0)   
+while 1: 
+  
+    ret, img = cap.read()  
+    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) 
+    # Detects faces of different sizes in the input image 
+    faces = face_cascade.detectMultiScale(gray, 1.3, 5) 
+    
+    for (x,y,w,h) in faces: 
+        
+        cv2.rectangle(img,(x,y),(x+w,y+h),(255,255,0),2)  
+        roi_gray = gray[y:y+h, x:x+w] 
+        roi_color = img[y:y+h, x:x+w] 
+       
+        eyes = eye_cascade.detectMultiScale(roi_gray)  
+      
+      
+        for (ex,ey,ew,eh) in eyes: 
+            cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,127,255),2) 
+   
+  
+    cv2.imshow('img',img) 
+    k = cv2.waitKey(30) & 0xff
+    if k == 27: 
+        break
+        
+cap.release() 
+
+cv2.destroyAllWindows()