python 画图函数

# coding=utf-8
import cv2

img = cv2.imread('/home/pi/工作/lena.jpeg')
# 画线，红色
cv2.line(img, pt1=(30, 30), pt2=(200, 200), color=(0, 0, 255), thickness=2)

# 矩形，绿色
cv2.rectangle(img, pt1=(40, 40), pt2=(250, 250), color=(0, 255, 0), thickness=2)

# 圆形，蓝色
cv2.circle(img, center=(50, 50), radius=70, color=(255, 0, 0), thickness=2)

# 文本， org=文字的起点座标, fontFace=字体
cv2.putText(img, 'different operation with different color',
            org=(50, 50),
            fontFace=cv2.FONT_HERSHEY_SIMPLEX,
            fontScale=0.25,
            color=(255, 255, 100))

cv2.imshow('画图', img)
cv2.imwrite('./画图.png', img)
cv2.waitKey(0)