code: import numpy as np
  import cv2
  img=np.zeros((512,512,3),np.uint8)
  cv2.line(img,(0,0),(511,511),(255,0,0),5)
  cv2.rectangle(img,(384,0),(510,218),(0,255,0),3)
  cv2.circle(img,(447,63),63,(0,0,255),9)
  cv2.ellipse(img,(256,256),(100,50),0,0,180,255,-1)
  pts = np.array([[10,5],[20,30],[70,20],[50,10]], np.int32)
  pts = pts.reshape((-1,1,2))
  cv2.polylines(img,[pts],False,(0,255,255))
  font = cv2.FONT_HERSHEY_SIMPLEX
  cv2.putText(img,'OpenCV',(10,500), font, 4,(255,255,255),2,cv2.LINE_AA)
  cv2.imshow('image',img)
  k=cv2.waitKey(0)
apis: numpy.array numpy.zeros