Captcha cracker

gistfile1.py

#!/usr/bin/python
# By Giorgi Jvaridze
# 13.10.2008
# [email protected]


def chk(t):
    n0="00001111100000011100111100100111111000011111100100111100111000000111110000"
    n1="011111101101111110010000000000000000000001111111110"
    n2="011111101100111110010001111100010011111001100111100111001100011110000101111100"
    n3="01111110100111111000111111110011110111001111011100011000100100001000111001110"
    n4="00111111110001111111010011111101100111110111001000000000000000000001110"
    n5="0110000010011000000011101110011111011001111101100011100110100000111011000"
    n6="000000111000000001001101110001111011100111101110001100110010000110011100"
    n7="00111111100001111110110011111011100111101111001110111110011011111100001111111000"
    n8="0011101110000100010011000100011110111001111011100011000100100001000111001110"
    n9="001110011000010011001100011101111001110111100011101100100000000111000000"
    if t.find(n0)!=-1:
        return '0'
    elif t.find(n1)!=-1:
        return '1'
    elif t.find(n2)!=-1:
        return '2'
    elif t.find(n3)!=-1:
        return '3'
    elif t.find(n4)!=-1:
        return '4'
    elif t.find(n5)!=-1:
        return '5'
    elif t.find(n6)!=-1:
        return '6'
    elif t.find(n7)!=-1:
        return '7'
    elif t.find(n8)!=-1:
        return '8'
    elif t.find(n9)!=-1:
        return '9' 

import Image
im = Image.open("target.bmp")
im2 = im.convert("L")
h=im2.size[1]
w=im2.size[0]

for hv in range(h):
    for wv in range(w):
        if im2.getpixel((wv,hv)) < 150:
            im2.putpixel((wv,hv),0)
        else:
            im2.putpixel((wv,hv),1)

s1=im2.crop((0,7,30,17))
s2=im2.crop((30,7,50,17))
s3=im2.crop((50,7,80,17))
s1,s2,s3=s1.rotate(-90),s2.rotate(-90),s3.rotate(-90)
sd1,sd2,sd3="","",""

for c in list(s1.getdata()):
    sd1=sd1+str(c)
for c in list(s2.getdata()):
    sd2=sd2+str(c)
for c in list(s3.getdata()):
    sd3=sd3+str(c)
cracked=chk(sd1)+chk(sd2)+chk(sd3)
print cracked