python3 实现验证码图片切割的方法_Python

python3 实现验证码图片切割的方法

2021-04-26 00:28shaomine Python

今天小编就为大家分享一篇python3 实现验证码图片切割的方法，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧

切割前图片

python3 实现验证码图片切割的方法

切割后四个图片

python3 实现验证码图片切割的方法

代码

									#coding:utf8

									import os

									from pil import image,imagedraw,imagefile

									import numpy

									import pytesseract

									import cv2

									import imagehash

									import collections

									class pictureidenti:

									 #rownum：切割行数；colnum：切割列数；dstpath：图片文件路径；img_name：要切割的图片文件

									 def splitimage(self, rownum=1, colnum=4, dstpath="d:\work\python36_crawl\veriycode",

									     img_name="d:\work\python36_crawl\veriycode\mode_5246.png",):

									  img = image.open(img_name)

									  w, h = img.size

									  if rownum <= h and colnum <= w:

									   print('original image info: %sx%s, %s, %s' % (w, h, img.format, img.mode))

									   print('开始处理图片切割, 请稍候...')

									   s = os.path.split(img_name)

									   if dstpath == '':

									    dstpath = s[0]

									   fn = s[1].split('.')

									   basename = fn[0]

									   ext = fn[-1]

									   num = 1

									   rowheight = h // rownum

									   colwidth = w // colnum

									   file_list = []

									   for r in range(rownum):

									    index = 0

									    for c in range(colnum):

									     # (left, upper, right, lower)

									     # box = (c * colwidth, r * rowheight, (c + 1) * colwidth, (r + 1) * rowheight)

									     if index<1:

									      colwid = colwidth+6

									     elif index<2:

									      colwid = colwidth + 1

									     elif index < 3:

									      colwid = colwidth

									     box = (c * colwid, r * rowheight, (c + 1) * colwid, (r + 1) * rowheight)

									     newfile = os.path.join(dstpath, basename + '_' + str(num) + '.' + ext)

									     file_list.append(newfile)

									     img.crop(box).save(os.path.join(dstpath, basename + '_' + str(num) + '.' + ext), ext)

									     num = num + 1

									     index+=1

									   for f in file_list:

									    print(f)

									   print('图片切割完毕，共生成 %s 张小图片。' % num)