python+opencv实现去掉合同试卷印章笔迹效果代码-python代码-BFW代码库

python+opencv实现去掉合同试卷印章笔迹效果代码

代码语言：python

所属分类：其他

代码描述：python+opencv实现去掉合同试卷印章笔迹效果代码，通过灰度图和阀值，过滤掉铅笔的痕迹。使用提取红色通道及阀值，过滤掉红色的批改痕迹。再将两个图做一次“或”，就实现去掉印章和笔迹了。

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

#!/usr/local/python3/bin/python3
# -*- coding: utf-8 -*
# -*- encoding: utf-8 -*-
import cv2
import numpy as np
 
 
class SealRemove(object):
 
    def remove_red_seal(self, image):
        # 获得红色通道
        blue_c, green_c, red_c = cv2.split(image)
        # 多传入一个参数cv2.THRESH_OTSU，并且把阈值thresh设为0，算法会找到最优阈值
        thresh, ret = cv2.threshold(red_c, 210, 255, cv2.THRESH_BINARY + cv2.THRESH_OTSU)
        # 实测调整为95%效果好一些
        filter_condition = int(thresh * 0.99)
 
        nominator_thresh, red_thresh = cv2.threshold(red_c, filter_condition, 255, cv2.THRESH_BINARY)
        return red_thresh
 
 
    def shijuanqingli(self, image):
        # img = cv2.imread(image, 0)
        thresh, dst1 = cv2.threshold(image,210, 255, cv2.THRESH_BINARY)
        dst1_without_pen = dst1
        return dst1_without_pen
 
    def join_image(self, img_without_red, dst1_without_pen):
        ret = cv2.bitwise_or(img_without_red, ds.........完整代码请登录后点击上方下载按钮下载查看