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Example sharing of Python implementing image recognition function

黄舟
Release: 2017-08-03 15:40:01
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这篇文章主要介绍了Python编程实现的图片识别功能,涉及Python PIL模块的安装与使用技巧,需要的朋友可以参考下

本文实例讲述了Python编程实现的图片识别功能。分享给大家供大家参考,具体如下:

1. 安装PIL,官方没有WIN64位,Pillow替代

pip install Pillow-2.7.0-cp27-none-win_amd64.whl

2. 安装Pytesser

下载pytesser_v0.0.1.zip,解压后复制进Python27\Lib\site-packges\pytesser路径下,无pytesser则新建

在Python27\Lib\site-packges\pytesser中新建一pytesser.pth文件,内容为pytesser

在pytesser内,修改三点

① pytesser.py修改成__init.py__

② 修改pytesser.py


import Image
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改为


from PIL import Image
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tesseract_exe_name = 'tesseract' 改为tesseract_exe_name = 'Python27\\Lib\\site-packges\\pytesser\\tesseract' 注意\转义

③ 安装Tesseract

下载后解压,找到tessdata文件夹,用其替换掉pytesser解压后的tessdata文件夹即可。

不过除了测试用验证码之外,其余的系统验证码的识别率很低。

附测试代码


from pytesser import *
from PIL import Image, ImageEnhance
im = Image.open('D:\Python27\Lib\site-packages\pytesser\phototest.tif')
im2 = Image.open(r'D:\Python27\Lib\site-packages\pytesser\fnord.tif','r')
im3 = Image.open(r'F:\PROJECT\python\code\Study_1\src\20170424\cp.jpg','r') #文件读写模式以防报错
#图片处理1::黑白处理
enhancer = ImageEnhance.Contrast(im3)
image2 = enhancer.enhance(5)
image2.show()
print image_to_string(image2)
#图片处理2: 降噪处理
imgry = im3.convert('L')  #灰度处理
#灰度处理基础上二值化处理
threshold = 140
table = []
for i in range(256):
  if i < threshold:
    table.append(0)
  else:
    table.append(1)
out = imgry.point(table, &#39;1&#39;)
out.show()
text = image_to_string(out)
if text.isspace() :
  print "FAILE"
else:
  print text
#print text
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