code: import cv2
  import numpy as np
  
  cap = cv2.VideoCapture(0)
  
  while True:
      ret, frame = cap.read()
      hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
      
      lower_red = np.array([30, 150, 50])
      upper_red = np.array([255, 255, 180])
      
      mask = cv2.inRange(hsv, lower_red, upper_red)
      res = cv2.bitwise_and(frame, frame, mask= mask)
  
      kernel = np.ones((5, 5), np.uint8)
      erosion = cv2.erode(mask, kernel, iterations = 1)
      dilation = cv2.dilate(mask, kernel, iterations = 1)
      opening = cv2.morphologyEx(mask, cv2.MORPH_OPEN, kernel)
      closing = cv2.morphologyEx(mask, cv2.MORPH_CLOSE, kernel)
  
  
      cv2.imshow('frame', frame)
      cv2.imshow('mask', mask)
      #cv2.imshow('erosion',erosion)
      #cv2.imshow('dilation',dilation)
      cv2.imshow('opening', opening)
      cv2.imshow('closing', closing)
      
      if cv2.waitKey(5) & 0xFF == 27:
          break
      
  cv2.destroyAllWindows()
  cap.release()    
  
apis: numpy.array numpy.ones