Trapezoidal deformation ?
Feb 08 2008 | 9:24 am
Hello all,
Does anyone know how it would be possible to produce a _trapezoidal_
deformation (not pin / barrel) with jit.repos or jt.mxform2d (or a
shader...) ?
The reason is : my camera isn't absolutely in the front axis of the
object I want to capture, and I need to compensate this deformation
of perspective. I browsed the helps and documentations but perhaps
does it exceed my knowledge in maths ;-)
Thank you very much...
Thierry
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Thierry Fournier
http://www.thierryfournier.net
- Feb 08 2008 | 12:36 pmhello thierry,i think the most interesting way to achieve this performance-wise is to move this processing into OpenGL. There geometry transform gives you all trapeze-correction practically for free. when combining this with a nurbs type surface you end up having an extremely flexible lens- correction. moving individual points of the nurb controlgrid lets you manipulate parts of the image independantly. the whole trick is to capture the nurb in a texture for further processing.see patch belowhth/*jsave as:OpenGL_lens_correction
- Feb 08 2008 | 1:58 pm
