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Fri, 25 May 2007
Another idea about captcha solving.
And this time it is not based on any graphic metrics.
All previous methods are similar to how small child plays with a cube,
which has inlets of different forms and set of objects, each one
matches only one form of inlet. Child gets objects and tries to
push them into the cube via different inlets until succeded. But reading
from the paper is different, instead let's recall how we were trained
to draw letters and digits - draw line from one point to another, then rotate
it to some degree and draw another line or arc and so on.
That is a base for my new method - each image is converted into set
of control points (start of the lines, crosses (questionable though), rotates)
and set of rules of how line between control points must be drawn.
If that set of rules matches in some metric to database set of rules,
then letter is found.
It is purely theoretic so far, but I already see how it can solve some issues
with all methods I used before, but it is possible, that
there will appear complex problems. For example it is not 100% clear to me
how to create set of control points from given image automatically,
but I have some ideas.
/devel/captcha :: Link / Comments (0)
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