About TODO Blog RSS Old blog Projects Gallery Notes

Sun, 20 May 2007

First Bezier curve.


Here is a result:



Bezier curve construction is very sensitive to the order of the control points, since resulted Bezier curve is a weighted sum of Bernstain polynomials, which do not depend on control points, but each polynomial is multiplied with the single control point, so mixing them results in completely different picture, while pixel image will still be the same.

As a conclusion, it is not possible to use raw pixel data obtained from captha images, instead they must be converted into ordered set of points, which represents control steps: end points, crosses and rounds.
When this task is solved, it will be quite simple to construct a letter using several Bezier curves and start working with it.
Back to drawing board...

/devel/math/bezier :: Link / Comments (0)

Comments are closed for this story.