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Hi,
Is there any way to simulate lens distortions such as barrel distortion and
pincushioning? I want to generate some purposely distorted images to verify
some equipment that is supposed to measure and correct for such distortions.
Thanks,
Bill
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"Bill Brehm" <bbr### [at] netzero net> wrote in message
news:3c49029c@news.povray.org...
>
> Is there any way to simulate lens distortions such as barrel distortion
and
> pincushioning? I want to generate some purposely distorted images to
verify
> some equipment that is supposed to measure and correct for such
distortions.
Check into using a normal statement in the camera; bump_map, slope_map,
normal_map, or just a pattern might work okay.
bob h
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> Check into using a normal statement in the camera; bump_map, slope_map,
> normal_map, or just a pattern might work okay.
I didn't know you could texture the camera.. lol. Got a long way to go. =)
__________________
Chris Howie
cra### [at] yahoocom
http://winimizer.virtualave.net
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Chris Howie <cra### [at] yahoocom> wrote:
: I didn't know you could texture the camera..
And you can't. You can apply a normal modifier, nothing else.
--
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -
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Wasn't it Bill Brehm who wrote:
>Is there any way to simulate lens distortions such as barrel distortion and
>pincushioning? I want to generate some purposely distorted images to verify
>some equipment that is supposed to measure and correct for such distortions.
If you happen to know the mathematics of the shape of a lens that
produces a particular type of distortion, then it should be possible to
construct such a lens and point the camera through it.
--
Mike Williams
Gentleman of Leisure
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"Chris Howie" <cra### [at] yahoocom> wrote in message
news:3c494d05@news.povray.org...
> > Check into using a normal statement in the camera; bump_map, slope_map,
> > normal_map, or just a pattern might work okay.
>
> I didn't know you could texture the camera.. lol. Got a long way to go. =)
>
Nice example of this in IRTC Gardens
http://www.irtc.org/ftp/pub/stills/1999-12-31/dmmonet.jpg
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Hi,
I haven't had much luck with slope_map, normal_map, etc.
Are their some examples somewhere that would help me grasp the concept?
Thanks,
Bill
"Tom Melly" <tom### [at] tomandlucouk> wrote in message
news:3c4c31e7$1@news.povray.org...
> "Chris Howie" <cra### [at] yahoocom> wrote in message
> news:3c494d05@news.povray.org...
> > > Check into using a normal statement in the camera; bump_map,
slope_map,
> > > normal_map, or just a pattern might work okay.
> >
> > I didn't know you could texture the camera.. lol. Got a long way to go.
=)
> >
>
> Nice example of this in IRTC Gardens
> http://www.irtc.org/ftp/pub/stills/1999-12-31/dmmonet.jpg
>
>
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