Python驗證碼識別的方法

#encoding=utf-8
import Image,ImageEnhance,ImageFilter
import sys
image_name = "./22.jpeg"
#去處 干擾點
im = Image.open(image_name)
im = im.filter(ImageFilter.MedianFilter())
enhancer = ImageEnhance.Contrast(im)
im = enhancer.enhance(2)
im = im.convert('1')
#im.show() #測試查看
s = 12 #啟始 切割點 x
t = 2 #啟始 切割點 y
w = 10 #切割 寬 +y
h = 15 #切割 長 +x
im_new = []
for i in range(4): #驗證碼切割
 im1 = im.crop((s+w*i+i*2,t,s+w*(i+1)+i*2,h))
 im_new.append(im1)
#im_new[0].show()#測試查看
xsize, ysize = im_new[0].size
gd = []
for i in range(ysize):
 tmp=[]
 for j in range(xsize):
 if( im_new[0].getpixel((j,i)) == 255 ):
 tmp.append(1)
 else:
 tmp.append(0)
 gd.append(tmp)
#看效果
for i in range(ysize):
 print gd[i]