python opencv3 矩形 圆形边框

git：https://github.com/linyi0604/Computer-Vision   # coding:utf8 import cv2 import numpy as np # 读入图像 img = cv2.imread("../data/mm1.jpg", cv2.IMREAD_UNCHANGED) # 转化为分别率更低的图像 img = cv2.pyrDown(img) #

>>阅读原文<<