import numpy as np
import cv2
img = np.zeros((512, 512, 3), np.uint8)
img = cv2.line(img,(100,0),(511,511),(255,0,0),10)
img = cv2.rectangle(img,(384,0),(510,128),(0,255,0),5)
img = cv2.circle(img,(447,63),63,(0,0,255),-1)
img = cv2.ellipse(img,(256,256),(100,50),90,0,270,(0,255,0),-1)
pts = np.array([[10,5],[20,30],[70,20],[50,10]],np.int32)
pts = pts.reshape((-1,1,2))
img = cv2.polylines(img,[pts],True,(0,255,255))
font = cv2.FONT_HERSHEY_SIMPLEX
cv2.putText(img, 'OpenCV', (10,500), font, 4,(255,255,255), 2, cv2.CV_16UC1)
cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()