前段时间看到了一个发票去红章的博客，看了一下源码将源码 c++改成 python
感谢博主提供的思路和代码
原博客https://www.cnblogs.com/skyfsm/p/7638301.html
ubuntu+python2.7
#-*- coding: utf-8 -*- import cv2 import numpy as np from matplotlib import pyplot as plt def RemoveRed(img): #img = cv2.imread(‘10.jpg‘) b, g, r = cv2.split(img) cv2.imshow(‘2‘,r) img = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)#灰度 th = 180 #阈值 #cv2.threshold(img, th, 255, 0, img)#二值 cv2.threshold(r, th, 255, 0, img) cv2.imshow(‘1‘,img) cv2.waitKey() if __name__ == ‘__main__‘: img = cv2.imread(‘10.jpg‘) result = RemoveRed(img)
原文：https://www.cnblogs.com/j657521265/p/9379374.html