opencv基础之 -- 矩形圆形绘制

import cv2
import numpy as np
newImageInfo = (500,500,3)
dst = np.zeros(newImageInfo,np.uint8)
#  1 2 左上角 3 右下角 4 5 fill -1 >0 line w
cv2.rectangle(dst,(50,100),(200,300),(255,0,0),5)
# 2 center 3 r 
cv2.circle(dst,(250,250),(50),(0,255,0),2)
# 2 center 3 轴 4 angle 5 begin 6 end 7 
cv2.ellipse(dst,(256,256),(150,100),0,0,180,(255,255,0),-1)

points = np.array([[150,50],[140,140],[200,170],[250,250],[150,50]],np.int32)
print(points.shape)
points = points.reshape((-1,1,2))
print(points.shape)
cv2.polylines(dst,[points],True,(0,255,255))
cv2.imshow('dst',dst)
cv2.waitKey(0)