#!/usr/bin/python3.6
# -*- coding: utf-8 -*-
# @Time : 2020/11/17 19:06
# @Author : ptg
# @Email : zhxwhchina@163.com
# @File : 去背景.py
# @Software: PyCharm

import cv2 as cv
import numpy as np

image = cv.imread("text1.png",cv.IMREAD_GRAYSCALE)
binary = cv.adaptiveThreshold(image,255,
        cv.ADAPTIVE_THRESH_GAUSSIAN_C,cv.THRESH_BINARY_INV,25,15)
se = cv.getStructuringElement(cv.MORPH_RECT,(1,1))
se = cv.morphologyEx(se, cv.MORPH_CLOSE, (2,2))
mask = cv.dilate(binary,se)
cv.imshow("image",image)

mask1 = cv.bitwise_not(mask)
binary =cv.bitwise_and(image,mask)
result = cv.add(binary,mask1)
cv.imshow("reslut",result)
cv.imwrite("reslut00.jpg",result)
cv.waitKey(0)
cv.destroyAllWindows()