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Fri, 11 Jul 2008

Spline graphical interpolation fun.



Playing with different spline interpolation methods. So far they seems to be quite simple when written in matrix form, so I cooked up simple GTK application to test various methods.
There is no interpolation implementation yet, since I devoted last two days to read lots of materials about Bezier and Hermite interpolation techniques (as long as lots of papers about distributed hash tables, which I will use as a filesystem storage base for POHMELFS).

/devel/captcha :: Link / Comments ()

Wed, 09 Jul 2008

Captcha transformation algorithms.

Couple of first ideas. Pretty trivial.



Next step is to squize images, so that all bold lines moved to single-pixel ones. In theory it should not be very complex (I have an algorithm in mind), but in practice it will - starting to recall why in the hell I learnt LISP.
Basic idea is to transform above BW pictures into simple binary format, which will be read by LISP application, since I do not know and do not want to devote much time to learn how to parse/process various image formats, instead it is done by GTK application written in C. I belive LISP was called the best language for artificial intellengence development for reason, so will try to find why.

Slacking - rox :)

/devel/captcha :: Link / Comments ()

Tue, 06 May 2008

New captcha solving problem.

Just in case you will notice some delay in filesystem or network development, reason is simple. I decided to devote some time to new captcha cracking problem, namely this ones:



The reason is simple, I want to test my captcha breaking ideas on something which is real. And also I was frustrated by theirs abuse team, which was not able to fix spam filter based on messages I sent them (bounce and original, just like requested).
It is pretty unlikely though that something will appear anytime soon, but I do want to test some ideas...

/devel/captcha :: Link / Comments ()