#coding=gbk

from __future__ import unicode_literals

import Image

import urllib

class Binaryzation(object):

"""

将图像进行二值化处理

"""

image = None

def __init__(self,img):

self.image = img

def __ConvertToGray(self):

"""

将图片灰度化处理

"""

if self.image:

return self.image.convert('L')

return None

def ConvertToBinaryzation(self,b):

"""

二值化

b: 可以理解为亮度，大于这个亮度的全部变为纯白色

"""

if self.image:

self.image = self.__ConvertToGray()

return self.image.point(lambda i:i > b and 255)

return None

if __name__ == '__main__':

url = 'http://regcheckcode.taobao.com/auction/checkcode?sessionID=f06c56ea0e0bda9a9d71832422b68f29'

s = urllib.urlopen(url).read()

f = open('v.jpg','wb')

f.write(s)

f.close()

im = Image.open('v.jpg')

b = Binaryzation(im)

im = b.ConvertToBinaryzation(160)

im.show()