Is it possible to OCR this type of CAPTCHA using any tools? (please see the attachment)
I'm familiar with OCR and I've tried so much (such as removing gray lines, etc.) but I can't find a way (I don't want the code, I want the procedure itself)
now I filtered pixels with a threshold (gray level of 150) and removed horizontal and vertical lines (1 pixels line), result attached.
result is not as well as I expected in many cases, digits will be separated and can not be recognized.
note: I've used PHP, but any language or tool that able to clear the image, is accepted.
Sorry for my bad English! And thanks for your time :)
(zip files cannot be attached, I have to upload my file somewhere else)