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From: =?ISO-8859-1?Q?Marie=2DNo=EBlle_Augendre?= <mnaugen...@gmail.com>
Date: Sun, 20 May 2012 17:40:23 +0200
Message-ID: <CALKx3eGXqJWW9Uc5FJACWFtD-hPz9ywovW+rzxuaVTJAnOB...@mail.gmail.com>
Subject: Re: [hugin-ptx] Lens calibration for RAW with a JPEG reference
To: hugin-ptx@googlegroups.com
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Just did a go at this tutorial
http://libregraphicsworld.org/blog/entry/creating-lens-distorsion-models-wi=
th-hugin-lens-calibrator,
with a grid I shooted with 7 different focals. Plenty of lines
detected
for each image, so I guess to calibration tool had everything it needed.

Resulting parameters seem to be OK for the biggest focals 18.4, 21.6 and 26=
.
But the images remain very distorted for the little ones: 5.2, 6, 7.5 and
10.8 (with a 4.59 crop factor).
I used TIFF images converted from the original RAW pictures

Any idea how I can make some progress on the matter?

Thanks a lot,
Marie-No=EBlle

2012/5/18 Carlos Eduardo G. Carvalho (Cartola) <cartol...@gmail.com>

> Have you tried this tutorial:
> http://hugin.sourceforge.net/tutorials/calibration/
>
> You can shoot a floor or any scene that already has lines, instead of
> putting your lines there.
>
> Cheers,
>
> Carlos E G Carvalho (Cartola)
> http://cartola.org/360
> http://cartola.org/panoforum
>
>
>
--=20
<http://www.marie-noelle-augendre.com/photos/>

Mes derni=E8res photos sont dans ma
galerie<http://www.marie-noelle-augendre.com/photos/>
.
Retrouvez-moi aussi sur mon blog <http://www.mnaugendre.com/>.
Et parcourez les C=E9vennes =E0 ma fa=E7on avec C=E9vennes
Plurielles<http://www.cevennes-plurielles.com/>,

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Just did a go at this tutorial <a href=3D"http://libregraphicsworld.org/blo=
g/entry/creating-lens-distorsion-models-with-hugin-lens-calibrator" target=
=3D"_blank">http://libregraphicsworld.org/blog/entry/creating-lens-distorsi=
on-models-with-hugin-lens-calibrator</a> , with a grid I shooted with 7 dif=
ferent focals. Plenty of lines detected for each image, so I guess to calib=
ration tool had everything it needed.<br>


<br>Resulting parameters seem to be OK for the biggest focals 18.4, 21.6 an=
d 26.<br>But the images remain very distorted for the little ones: 5.2, 6, =
7.5 and 10.8 (with a 4.59 crop factor).<br>I used TIFF images converted fro=
m the original RAW pictures<br>


<br>Any idea how I can make some progress on the matter?<br><br>Thanks a lo=
t,<br>Marie-No=EBlle<br><br><div class=3D"gmail_quote">2012/5/18 Carlos Edu=
ardo G. Carvalho (Cartola) <span dir=3D"ltr">&lt;<a href=3D"mailto:cartoleb=
a...@gmail.com" target=3D"_blank">cartol...@gmail.com</a>&gt;</span><br>


<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Have you tried this tutorial: <a href=3D"htt=
p://hugin.sourceforge.net/tutorials/calibration/" target=3D"_blank">http://=
hugin.sourceforge.net/tutorials/calibration/</a><br>


<br>You can shoot a floor or any scene that already has lines, instead of p=
utting your lines there.<br>
<br>Cheers,<br clear=3D"all"><br>Carlos E G Carvalho (Cartola)<br><a href=
=3D"http://cartola.org/360" target=3D"_blank">http://cartola.org/360</a><br=
><a href=3D"http://cartola.org/panoforum" target=3D"_blank">http://cartola.=
org/panoforum</a><br>



<br clear=3D"all"><br></blockquote></div><br>-- <br><a href=3D"http://www.m=
arie-noelle-augendre.com/photos/" target=3D"_blank"><img src=3D"https://lh5=
.googleusercontent.com/-3CngBD0rusY/T2ehQSWI1gI/AAAAAAAABto/JgLg9iDzPHQ/s80=
0/Banni%25C3%25A8re.jpg"></a><br>


<br>Mes derni=E8res photos sont <a href=3D"http://www.marie-noelle-augendre=
.com/photos/" target=3D"_blank">dans ma galerie</a>.<br>Retrouvez-moi aussi=
 <a href=3D"http://www.mnaugendre.com/" target=3D"_blank">sur mon blog</a>.=
<br>Et parcourez les C=E9vennes =E0 ma fa=E7on avec <a href=3D"http://www.c=
evennes-plurielles.com/" target=3D"_blank">C=E9vennes Plurielles</a>, <br>


<br>

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