Tell me more ×  I have been trying to do a "inverse" fisheye
lens effect, which means to transform a "fisheye" image to
rectangular/square image using matlab for few weeks, but still
without a good solution.  Basically it is just an inverse of How
can I implement this visual effect in MATLAB?  Could anyone tell
me how to do this please?  share|improve this question Duplicate
of… –  jmbr Mar 20 '11 at 12:25 add comment  1 Answer  You
should look at Jean-Yves Bouguet's Camera Calibration Toolkit.
If you have the camera you can follow his steps to calibrate the
camera yourself. Otherwise you will have to know something about
the geometry of the lens.  share|improve this answer add comment
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