Captcha identify

[Wesley]

Hi guys,
  These days I got a small task to identify Captcha characters.
I googled a lot and find some way to do verification code identify.
However, most are for general captcha.

And, for simple captcha, I can use Pytesser.

However, what about those advanced pictures.
I mean:
1.including number and alpha
2.letters might be rotated
3.letters might be deformed

I don't know why I cannot insert picture attachment here...

But I think you guys can think out what the captcha looks like:-)

So, any suggestions?

Thanks.
Wesley