pinCushion and barrel image distortion removal usíng .NET using C#

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Hello,

is there a reasonably fast tranformation matrix available,
that removes a pinCushion- or barrel-distortion from an image.

I have found no transformation that can be used by a graphics class
and coding an algorithm using GetPixel and SetPixel is awfully slow.

Any hint will be very much appreciated.

Wolfgang

Posted 22-Feb-11 5:35am

Wolfgang Kurz

Updated 22-Feb-11 5:37am

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Sergey Alexandrovich Kryukov 22-Feb-11 11:47am

No it could not be just one matrix, but the question is interesting, my 5.
--SA

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-02-22T06:57:00

There can be "fast" or "slow" transformation matrix: matrix transformation is matrix transformation, that all have the same speed (quite good).

I'm quite sure you cannot achieve the fix of such distortion (a very typical task) with just one matrix transformation, so the question is: can you find both easy-to-implement and fast solution for the distortion correction. That is your goal, right?

I don't think this is easy even if the parameters of distortion are already known. This article confirms my skepticism: http://sprg.massey.ac.nz/pdfs/2003_IVCNZ_408.pdf[^].

—SA