[ArcheOS] Digest di ArcheOS, Volume 8, Numero 3

Gio 13 Maggio 2010 10:42:26 CEST

Hi,

If you are interested on non-photorealistic-rendering (npr), this is the
starting point when I write a shader.

The operator of Sober is the main method where I usually start. Especially
for self-occluding object.

http://en.wikipedia.org/wiki/Sobel_operator

For identifying various objects just pass the information on edges rendered
through a channel of the output (for example, detecting  discontinuity of
color).

This is an interesting publication on npr, based on a procedural approach.

http://artis.imag.fr/Publications/2005/Gra05/

Something more recent.

http://www.cad.zju.edu.cn/home/chenwei/webs/paperfavorite.html

2

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> Message: 2
> Date: Wed, 12 May 2010 18:47:07 +0200
> From: Luca Bezzi <luca.bezzi@arc-team.com>
> Subject: Re: [ArcheOS] Proposte - Vector rendering engine for Blender
> To: <archeos@lists.linux.it>
> Message-ID: <19412.1273682827@mail.sprit.org>
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>
> Hi Ricardo,
>
> I checked the link of these two software. They look great! They reguard
> something that was missing in the semi-automatic
> archaeological draw of artifacts.
>
> Actually with Simone Cavalieri (I don't know if he is inside the maling
> list and can read this email...) and Alessandro, i worked
> to defin a way to automatically draw artifacts starting from rectified
> images (I guess the presentation will be soon online).
> Anyway there is a way to do more or less the same things starting from 3d
> objects.
>
> Regarding 2D the workflow is
> 1 take a picture
> 2 rectify the picture
> 3 manually draw (vector) the artifact inside a GIS (following the rectified
> image) or automatically try to defin it with graphical
> filter (e.g. canny)
> 4 do automatically the sahdow (with stippling) using the software stippler
> on the image
> 5 eventually take the section (automatically, if possible)
>
> Regaring 3d the worklow could be
> 1 record the object (scan, SFM, ecc...)
> 2 define the borders (with the software you proposed)
> 3 do automatically the shadow with another stippling algorithm (by now I
> don't remember the name, but ther should be already a
> software to do this; I guess Simone is in contact with the authors and they
> should release it as FLOSS)
>
> If you are interested, we can try to work on it all together and, if we get
> positive result, insert these software in ArcheOS.
>
> Ciao.
>
>
>
> Luca Bezzi
>
> Arc-Team
> Archaeology & Free Software
> http://www.arc-team.com/
> luca.bezzi@arc-team.com
>
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 12 May 2010 17:26:14 -0700 (PDT)
> From: Ricardo Gaidão <caioviator@yahoo.com.br>
> Subject: Re: [ArcheOS] Proposte - Vector rendering engine for Blender
> To: Fabrizio Furnari <fab.furnari@email.it>, archeos@lists.linux.it
> Message-ID: <563245.57769.qm@web110516.mail.gq1.yahoo.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I think the most auspicious project is Freestyler. You can try some
> working Linux Blender builds with Freestyler from Graphicall.org:
>
>
>
> Blender 2.5 Freestyle r28536 linux 32bit
>
> http://www.graphicall.org/builds/builds/showbuild.php?action=show&id=1142
>
>
>
> Blender 2.5 Freestyle r28536 linux 64bit
>
> http://www.graphicall.org/builds/builds/showbuild.php?action=show&id=1141
>
>
>
> (other OS versions also available)
>
>
>
> As you already said Freestyler is in developing stage, with all the
> inherent bugs. Some users can already achieve results very close to
> technical illustration standards, but there is a lack of detailed
> tutorials explaining how they achieve them.
>
>
>
> http://maximecurioni.com/freestyle/
>
>
>
> Maybe Freestyle is too young to be included in the next ArcheOS.
>
>
>
> Unfortunately I didn't find other similar and more stable alternative.
> Solutions like this:
>
>
>
> http://matthieu3d.free.fr/TutoVira1/tuten.html
>
>
>
> apparently don't work very well with complex (organic) meshes.
>
> --- Em ter, 11/5/10, Fabrizio Furnari <fab.furnari@email.it> escreveu:
>
> De: Fabrizio Furnari <fab.furnari@email.it>
> Assunto: Re: [ArcheOS] Proposte - Vector rendering engine for Blender
> Para: "Ricardo Gaidão" <caioviator@yahoo.com.br>
> Cc: archeos@lists.linux.it
> Data: Terça-feira, 11 de Maio de 2010, 19:26
>
> Hi,
> 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?
>
>
> Thanks for the proposals,
>
>
>
> Fabrizio
>
> 2010/5/11 Ricardo Gaidão <caioviator@yahoo.com.br>
>
>
>
>
> Vector rendering engines for Blender
>
> This kind of engines can create outline renderings from 3D models, with a
> technical illustration look.
>
> The vectorial output (i.e. svg 2D files) allow additional editing with
> vector graphics editors (i.e. Inkscape) to improve the final result.
>
>
>
> 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.
>
> Pantograph
>
> http://severnclaystudio.wordpress.com/bluebeard/
>
>
>
> http://severnclaystudio.wordpress.com/bluebeard/pantograph-gallery/
>
>
> Freestyle
>
> http://freestyle.sourceforge.net/index.php
>
>
>
> http://freestyle.sourceforge.net/GALLERY/dirindex.php
>
> http://freestyleintegration.wordpress.com/frequently-asked-questions-faq/
>
>
>
>
>
>
>
>
>
>
>
>
>
> --
>
> Mailing list info: http://lists.linux.it/listinfo/archeos
>
>
>
>
>
> --
> @P=split//,".URRUU\c8R";@d=split//,"\niranruF oizirbaF";sub p{
>
> @p{"r$p","u$p"}=(P,P);pipe"r$p","u$p";++$p;($q*=2)+=$f=!fork;map{$P=$P[$f^ord
>
>
> ($p{$_})&6];$p{$_}=/
> ^$P/ix?$P:close$_}keys%p}p;p;p;p;p;map{$p{$_}=~/^[P.]/&&
> close$_}%p;wait until$?;map{/^r/&&<$_>}%p;$_=$d[$q];sleep
> rand(2)if/\S/;print
>
>
>
>
>
>
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> Fine di Digest di ArcheOS, Volume 8, Numero 3
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