add new coding files

Author: manthan89-py

Readme.md

@@ -35,6 +35,7 @@
 * face_detection_opencv.py
 * harris_corner_detection.py
 * shi_tomasi_corner_detection.py
+* background_subtraction_opencv.py
 
 ## Helpful Documentations⭐:
 * OpenCV : https://docs.opencv.org/master/

background_subtraction_opencv.py

@@ -0,0 +1,22 @@
+import cv2
+import numpy as np
+
+cap = cv2.VideoCapture('test_images/vtest.avi')
+# fgbg = cv2.createBackgroundSubtractorMOG2()
+fgbg = cv2.createBackgroundSubtractorKNN()
+
+while True:
+    ret, frame = cap.read()
+    if frame is None:
+        break
+
+    fgmask = fgbg.apply(frame)
+    cv2.imshow('image', frame)
+    cv2.imshow('FG mask' , fgmask)
+
+    if cv2.waitKey(30) & 0xFF == ord('q'):
+        break
+
+cap.release()
+cv2.destroyAllWindows()
+