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solve_captcha.py
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solve_captcha.py
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#!/usr/bin/python
# written by s3rb31@mail.ru
import sys
from PIL import Image
from PIL import ImageEnhance
def image_identify_num(img):
hi_num = -1
hi_count = 0
for i in xrange(1, 10):
count = image_pixel_equality(img, Image.open("tmpl/" + str(i) + "_b.png").convert("RGB"))
if count > hi_count:
hi_num = i
hi_count = count
return hi_num
def image_get_next_whitespace(start, img):
white_xpos = -1
white_count = 1
pixdata = img.load()
for x in xrange(start, img.size[0]):
for y in xrange(img.size[1]):
if pixdata[x,y] == (255, 255, 255):
white_count += 1
else:
white_count = 0
if white_count > (img.size[1] * 2):
white_xpos = x
break
return white_xpos
def image_get_char(img):
loX = -1; hiX = -1
loY = -1; hiY = -1
pixdata = img.load()
for x in xrange(img.size[0]):
#print pixel[x][0]
for y in xrange(img.size[1]):
if (pixdata[x, y] == (0, 0, 0)):
if loX == -1 or loX > x: loX = x
if hiX == -1 or hiX < x: hiX = x
if loY == -1 or loY > y: loY = y
if hiY == -1 or hiY < y: hiY = y
return img.crop((loX, loY, hiX, hiY))
def image_pixel_equality(src_img, tpl_img):
equality_count = 0
w = src_img.size[0] if (src_img.size[0] <= tpl_img.size[0]) else tpl_img.size[0]
h = src_img.size[1] if (src_img.size[1] <= tpl_img.size[1]) else tpl_img.size[1]
tpl_img = tpl_img.crop((0, 0, w, h)).convert("RGB")
pixdata_s = src_img.load();
pixdata_c = tpl_img.load()
for x in xrange(w):
for y in xrange(h):
if pixdata_s[x, y] == pixdata_c[x, y]:
equality_count += 1;
if pixdata_s[x, y] != pixdata_c[x, y]:
equality_count -= 1;
return equality_count
def solve_captcha(img):
img = img.convert("RGB")
img = ImageEnhance.Brightness(img).enhance(1.2)
img = ImageEnhance.Contrast(img).enhance(1.7)
pixdata = img.load()
for x in xrange(img.size[0]):
for y in xrange(img.size[1]):
if ( (pixdata[x,y][0] < 60 or pixdata[x,y][0] > 65)
and (pixdata[x,y][1] < 60 or pixdata[x,y][0] > 65)
and (pixdata[x,y][2] < 60 or pixdata[x,y][0] > 65)):
pixdata[x,y] = (255, 255, 255)
else:
pixdata[x,y] = (0, 0, 0)
img = img.resize((600, 200), Image.NEAREST)
pixdata = img.load()
for x in xrange(1, img.size[0] - 1):
for y in xrange(1, img.size[1] - 1):
if pixdata[x,y] != (0, 0, 0):
if ( (pixdata[x+1,y] == (0, 0, 0) and pixdata[x-1,y] == (0, 0, 0))
and (pixdata[x,y+1] == (0, 0, 0) or pixdata[x,y-1] == (0, 0, 0))):
pixdata[x,y] = (0, 0, 0)
if ( (pixdata[x,y+1] == (0, 0, 0) and pixdata[x,y-1] == (0, 0, 0))
and (pixdata[x+1,y] == (0, 0, 0) or pixdata[x-1,y] == (0, 0, 0))):
pixdata[x,y] = (0, 0, 0)
exit_loop = 0
img_count = 0
captcha_val = ""
for x in xrange(img.size[0]):
if exit_loop == 1: break
for y in xrange(img.size[1]):
if exit_loop == 1: break
if pixdata[x, y] == (0, 0, 0):
white_xpos = image_get_next_whitespace(x, img)
if white_xpos == -1:
exit_loop = 1
captcha_val = "error"
else:
img_count += 1
if x > 15: x -= 15
if img.size[1] - white_xpos >= 10: white_xpos += 10
captcha_val += str(image_identify_num(image_get_char(img.crop((x, 0, white_xpos, img.size[1])))))
if img_count == 5:
exit_loop = 1
else:
img = img.crop((white_xpos, 0, img.size[0], img.size[1]))
pixdata = img.load()
x = 0; y = 0
return captcha_val
if __name__ == "__main__":
img = Image.open("test.png")
print solve_captcha(img)