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Showing posts from November, 2012

Easy read capcha with Python

I need crack some easy captcha, so i written one script to do that. I used PIL lib to edit images, convert background to whitem character to black. And Pytesster used to make OCR: Optical Character Recognition. from PIL import Image img = Image.open('a.jpeg') # Your image here! img = img.convert("RGBA") width, height = img.size pixdata = img.load() # Make the letters bolder for easier recognition for y in xrange(img.size[1]):     for x in xrange(img.size[0]):         if pixdata[x, y][0] < 90:             pixdata[x, y] = (0, 0, 0, 255) for y in xrange(img.size[1]):     for x in xrange(img.size[0]):         if pixdata[x, y][1] < 136:             pixdata[x, y] = (0, 0, 0, 255) for y in xrange(img.size[1]):     for x in xrange(img.size[0]):         if pixdata[x, y][2] > 0:             pixdata[x, y] = (255, 255, 255, 255) img.save("input-black.gif", "GIF") #   Make the image bigger (needed for OCR) im_orig = Image.