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 画矩形,最后一个参数:-1全填充;>0的值:线宽
cv2.rectangle(dst,(50,100),(200,300),(255,0,0),5)
# 2 center 3 r 画圆
cv2.circle(dst,(250,250),(50),(0,255,0),2)
# 2 center 3 轴 4 angle 5 begin 6 end 7 颜色 8 颜色是否填充
#画椭圆,扇形,圆弧
cv2.ellipse(dst,(256,256),(150,100),0,0,180,(255,255,0),-1)
#绘制任意多边形
points = np.array([[150,50],[140,140],[200,170],[250,250],[150,50]],np.int32) #描述当前的形状,给出各个点的坐标
print(points.shape) #打印当前矩阵的维度信息
points = points.reshape((-1,1,2)) #将矩阵进行装置
print(points.shape) #打印装置后矩阵的维度信息
cv2.polylines(dst,[points],True,(0,255,255))
cv2.imshow('dst',dst)
cv2.waitKey(0)
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