<span><span title="">Hi,<br>
<br>
If you are interested
on non-photorealistic-rendering (npr), this is the starting point when I
write
a shader.<br><br><br></span><span title="">The operator of
Sober is the main method where I usually start. </span><span title="">Especially
for self-occluding object.<br></span><span title=""><br>
<a href="http://en.wikipedia.org/wiki/Sobel_operator" target="_blank">http://en.wikipedia.org/wiki/Sobel_operator</a><br><br></span><span title="">For
identifying various objects just pass the information on
edges rendered through a channel of the output (for example, detecting
discontinuity of color).<br><br></span><span title="">This is an
interesting publication on npr, based on a procedural approach.<br><br></span><span title=""><a href="http://artis.imag.fr/Publications/2005/Gra05/" target="_blank">http://artis.imag.fr/Publications/2005/Gra05/</a><br><br>
</span><span title="">Something more recent.<br>
<br></span><span title=""><a href="http://www.cad.zju.edu.cn/home/chenwei/webs/paperfavorite.html" target="_blank">http://www.cad.zju.edu.cn/home/chenwei/webs/paperfavorite.html</a></span></span><span style="display: block;"><img src="http://www.google.it/images/cleardot.gif" style="margin-right: 0.33em;"></span><br>
<br><div class="gmail_quote">2<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
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Message: 2<br>
Date: Wed, 12 May 2010 18:47:07 +0200<br>
From: Luca Bezzi <<a href="mailto:luca.bezzi@arc-team.com" target="_blank">luca.bezzi@arc-team.com</a>><br>
Subject: Re: [ArcheOS] Proposte - Vector rendering engine for Blender<br>
To: <<a href="mailto:archeos@lists.linux.it" target="_blank">archeos@lists.linux.it</a>><br>
Message-ID: <<a href="mailto:19412.1273682827@mail.sprit.org" target="_blank">19412.1273682827@mail.sprit.org</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi Ricardo,<br>
<br>
I checked the link of these two software. They look great! They reguard something that was missing in the semi-automatic<br>
archaeological draw of artifacts.<br>
<br>
Actually with Simone Cavalieri (I don't know if he is inside the maling list and can read this email...) and Alessandro, i worked<br>
to defin a way to automatically draw artifacts starting from rectified images (I guess the presentation will be soon online).<br>
Anyway there is a way to do more or less the same things starting from 3d objects.<br>
<br>
Regarding 2D the workflow is<br>
1 take a picture<br>
2 rectify the picture<br>
3 manually draw (vector) the artifact inside a GIS (following the rectified image) or automatically try to defin it with graphical<br>
filter (e.g. canny)<br>
4 do automatically the sahdow (with stippling) using the software stippler on the image<br>
5 eventually take the section (automatically, if possible)<br>
<br>
Regaring 3d the worklow could be<br>
1 record the object (scan, SFM, ecc...)<br>
2 define the borders (with the software you proposed)<br>
3 do automatically the shadow with another stippling algorithm (by now I don't remember the name, but ther should be already a<br>
software to do this; I guess Simone is in contact with the authors and they should release it as FLOSS)<br>
<br>
If you are interested, we can try to work on it all together and, if we get positive result, insert these software in ArcheOS.<br>
<br>
Ciao.<br>
<br>
<br>
<br>
Luca Bezzi<br>
<br>
Arc-Team<br>
Archaeology & Free Software<br>
<a href="http://www.arc-team.com/" target="_blank">http://www.arc-team.com/</a><br>
<a href="mailto:luca.bezzi@arc-team.com" target="_blank">luca.bezzi@arc-team.com</a><br>
<br>
<br>
<br>
<br>
<br>
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<br>
Message: 3<br>
Date: Wed, 12 May 2010 17:26:14 -0700 (PDT)<br>
From: Ricardo Gaidão <<a href="mailto:caioviator@yahoo.com.br" target="_blank">caioviator@yahoo.com.br</a>><br>
Subject: Re: [ArcheOS] Proposte - Vector rendering engine for Blender<br>
To: Fabrizio Furnari <<a href="mailto:fab.furnari@email.it" target="_blank">fab.furnari@email.it</a>>, <a href="mailto:archeos@lists.linux.it" target="_blank">archeos@lists.linux.it</a><br>
Message-ID: <<a href="mailto:563245.57769.qm@web110516.mail.gq1.yahoo.com" target="_blank">563245.57769.qm@web110516.mail.gq1.yahoo.com</a>><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
I think the most auspicious project is Freestyler. You can try some<br>
working Linux Blender builds with Freestyler from Graphicall.org:<br>
<br>
<br>
<br>
Blender 2.5 Freestyle r28536 linux 32bit<br>
<br>
<a href="http://www.graphicall.org/builds/builds/showbuild.php?action=show&id=1142" target="_blank">http://www.graphicall.org/builds/builds/showbuild.php?action=show&id=1142</a><br>
<br>
<br>
<br>
Blender 2.5 Freestyle r28536 linux 64bit<br>
<br>
<a href="http://www.graphicall.org/builds/builds/showbuild.php?action=show&id=1141" target="_blank">http://www.graphicall.org/builds/builds/showbuild.php?action=show&id=1141</a><br>
<br>
<br>
<br>
(other OS versions also available)<br>
<br>
<br>
<br>
As you already said Freestyler is in developing stage, with all the<br>
inherent bugs. Some users can already achieve results very close to<br>
technical illustration standards, but there is a lack of detailed<br>
tutorials explaining how they achieve them.<br>
<br>
<br>
<br>
<a href="http://maximecurioni.com/freestyle/" target="_blank">http://maximecurioni.com/freestyle/</a><br>
<br>
<br>
<br>
Maybe Freestyle is too young to be included in the next ArcheOS.<br>
<br>
<br>
<br>
Unfortunately I didn't find other similar and more stable alternative. Solutions like this:<br>
<br>
<br>
<br>
<a href="http://matthieu3d.free.fr/TutoVira1/tuten.html" target="_blank">http://matthieu3d.free.fr/TutoVira1/tuten.html</a><br>
<br>
<br>
<br>
apparently don't work very well with complex (organic) meshes. <br>
<br>
--- Em ter, 11/5/10, Fabrizio Furnari <<a href="mailto:fab.furnari@email.it" target="_blank">fab.furnari@email.it</a>> escreveu:<br>
<br>
De: Fabrizio Furnari <<a href="mailto:fab.furnari@email.it" target="_blank">fab.furnari@email.it</a>><br>
Assunto: Re: [ArcheOS] Proposte - Vector rendering engine for Blender<br>
Para: "Ricardo Gaidão" <<a href="mailto:caioviator@yahoo.com.br" target="_blank">caioviator@yahoo.com.br</a>><br>
Cc: <a href="mailto:archeos@lists.linux.it" target="_blank">archeos@lists.linux.it</a><br>
Data: Terça-feira, 11 de Maio de 2010, 19:26<br>
<br>
Hi,<br>
these two integrations are very interesting, but as I would see, their development are still active. Do you know if the code is mature enough to be introduced in ArcheOS?<br>
<br>
<br>
Thanks for the proposals,<br>
<br>
<br>
<br>
Fabrizio<br>
<br>
2010/5/11 Ricardo Gaidão <<a href="mailto:caioviator@yahoo.com.br" target="_blank">caioviator@yahoo.com.br</a>><br>
<br>
<br>
<br>
<br>
Vector rendering engines for Blender<br>
<br>
This kind of engines can create outline renderings from 3D models, with a technical illustration look.<br>
<br>
The vectorial output (i.e. svg 2D files) allow additional editing with vector graphics editors (i.e. Inkscape) to improve the final result. <br>
<br>
<br>
<br>
This appears to be a viable option to create archaeological illustrations to artifacts or topographic models created with laser scan or Structure from Motion techniques. <br>
<br>
Pantograph<br>
<br>
<a href="http://severnclaystudio.wordpress.com/bluebeard/" target="_blank">http://severnclaystudio.wordpress.com/bluebeard/</a><br>
<br>
<br>
<br>
<a href="http://severnclaystudio.wordpress.com/bluebeard/pantograph-gallery/" target="_blank">http://severnclaystudio.wordpress.com/bluebeard/pantograph-gallery/</a><br>
<br>
<br>
Freestyle<br>
<br>
<a href="http://freestyle.sourceforge.net/index.php" target="_blank">http://freestyle.sourceforge.net/index.php</a><br>
<br>
<br>
<br>
<a href="http://freestyle.sourceforge.net/GALLERY/dirindex.php" target="_blank">http://freestyle.sourceforge.net/GALLERY/dirindex.php</a><br>
<br>
<a href="http://freestyleintegration.wordpress.com/frequently-asked-questions-faq/" target="_blank">http://freestyleintegration.wordpress.com/frequently-asked-questions-faq/</a><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
--<br>
<br>
Mailing list info: <a href="http://lists.linux.it/listinfo/archeos" target="_blank">http://lists.linux.it/listinfo/archeos</a><br>
<br>
<br>
<br>
<br>
<br>
--<br>
@P=split//,".URRUU\c8R";@d=split//,"\niranruF oizirbaF";sub p{<br>
@p{"r$p","u$p"}=(P,P);pipe"r$p","u$p";++$p;($q*=2)+=$f=!fork;map{$P=$P[$f^ord<br>
<br>
<br>
($p{$_})&6];$p{$_}=/ ^$P/ix?$P:close$_}keys%p}p;p;p;p;p;map{$p{$_}=~/^[P.]/&&<br>
close$_}%p;wait until$?;map{/^r/&&<$_>}%p;$_=$d[$q];sleep rand(2)if/\S/;print<br>
<br>
<br>
<br>
<br>
<br>
<br>
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