POV-Ray : Newsgroups : povray.advanced-users : Point Cloud to Mesh / DXF Creation Server Time
1 Nov 2024 03:15:16 EDT (-0400)
  Point Cloud to Mesh / DXF Creation (Message 1 to 3 of 3)  
From: The Blind Ace
Subject: Point Cloud to Mesh / DXF Creation
Date: 26 Jun 2008 18:40:00
Message: <web.486419f5aae970d0cf7b32b00@news.povray.org>
I was looking at Chris Colefax's compressed mesh.

Now, I want to start converting some point clouds to meshes.

That gave me the idea of converting some point clouds in to meshes. I wanted to
find out if there were any tutorials that are the first steps to converting
point clouds to meshes.

Then a description of compressing the meshes.

Thanks
James


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From: Chris B
Subject: Re: Point Cloud to Mesh / DXF Creation
Date: 27 Jun 2008 05:00:24
Message: <4864ac28$1@news.povray.org>
"The Blind Ace" <nomail@nomail> wrote in message 
news:web.486419f5aae970d0cf7b32b00@news.povray.org...
>I was looking at Chris Colefax's compressed mesh.
>
> Now, I want to start converting some point clouds to meshes.
>
> That gave me the idea of converting some point clouds in to meshes. I 
> wanted to
> find out if there were any tutorials that are the first steps to 
> converting
> point clouds to meshes.
>
> Then a description of compressing the meshes.
>
> Thanks
> James

A quick google threw up an open source tool called MeshLab at 
http://meshlab.sourceforge.net/. They have a wiki with some How-To's that 
may get you started - Not quite a tutorial, but it does indicate how to 
approach certain problems using available tools. Reading the feature list 
should give you an idea of the wide range of things you'd need to read up on 
if you wish to start develop your own methods and techniques for doing it.

Regards,
Chris B.


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From: Alain
Subject: Re: Point Cloud to Mesh / DXF Creation
Date: 27 Jun 2008 12:33:48
Message: <4865166c$1@news.povray.org>
The Blind Ace nous illumina en ce 2008-06-26 18:36 -->
> I was looking at Chris Colefax's compressed mesh.
> 
> Now, I want to start converting some point clouds to meshes.
> 
> That gave me the idea of converting some point clouds in to meshes. I wanted to
> find out if there were any tutorials that are the first steps to converting
> point clouds to meshes.
> 
> Then a description of compressing the meshes.
> 
> Thanks
> James
> 
> 
Converting an arbitrary cloud of points into a mesh is a non-trivial problem. In 
most cases, it just can't be automated. Even some of the simplest cases, all 
points roughly limited to a mostly planar area, will give unexpected results, 
giving you spikes and holes.

-- 
Alain
-------------------------------------------------
Politics is such a torment that I advise everyone I love not to mix with it.
Thomas Jefferson


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