point cloud data (1) and hardware life (2)

1) What algorithms or freeware would you suggest to make triangles or polygons out of point cloud data obtained by 3D laser scanning (historic architecture)? I need to minimize the number of triangles and would prefer polygons.

2) Now that PowerMac laptops are on the rise, how can I get the most out of hardware life? Turn the computer off at night or use the sleep function whenever possible? Put ice packs under the powerbook?

Thanks

Martin

Martin Moeck, ASU

Hi Martin,

1) What algorithms or freeware would you suggest to make triangles or
polygons out of point cloud data obtained by 3D laser scanning (historic architecture)?
I need to minimize the number of triangles and would prefer polygons.

I have used MeshLab http://meshlab.sourceforge.net/ and VTK
(directly or through MayaVI or Paraview) for similar purposes.

Francesco

Hi Franceso,

Meshlab seems to support meshes, but not point clouds? I have raw xyz coordinates from a scanner - no mesh.

Martin

···

-----Original Message-----
From: [email protected] on behalf of Francesco Anselmo
Sent: Thu 3/15/2007 1:40 PM
To: Radiance general discussion
Subject: Re: [Radiance-general] point cloud data (1) and hardware life (2)

Hi Martin,

1) What algorithms or freeware would you suggest to make triangles or
polygons out of point cloud data obtained by 3D laser scanning (historic architecture)?
I need to minimize the number of triangles and would prefer polygons.

I have used MeshLab http://meshlab.sourceforge.net/ and VTK
(directly or through MayaVI or Paraview) for similar purposes.

Francesco

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Hi Martin,

Sorry, it is not free, but you could check out the following options at:

http://www.fpsols.com/products.html

It looks like they have plug-in solutions for Autocad and Rhino.

-Jack de Valpine

Martin Moeck wrote:

···

Hi Franceso,

Meshlab seems to support meshes, but not point clouds? I have raw xyz coordinates from a scanner - no mesh.

Martin

-----Original Message-----
From: [email protected] on behalf of Francesco Anselmo
Sent: Thu 3/15/2007 1:40 PM
To: Radiance general discussion
Subject: Re: [Radiance-general] point cloud data (1) and hardware life (2)
Hi Martin,

1) What algorithms or freeware would you suggest to make triangles or polygons out of point cloud data obtained by 3D laser scanning (historic architecture)? I need to minimize the number of triangles and would prefer polygons.
    
I have used MeshLab http://meshlab.sourceforge.net/ and VTK (directly or through MayaVI or Paraview) for similar purposes.

Francesco

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Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

  ------------------------------------------------------------------------

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--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction

The graphics group at Stanford University has done extensive work in this area. See:

  http://graphics.stanford.edu/software/vrip/

-Greg

···

From: Jack de Valpine <[email protected]>
Date: March 15, 2007 2:45:01 PM PDT

Hi Martin,

Sorry, it is not free, but you could check out the following options at:

http://www.fpsols.com/products.html

It looks like they have plug-in solutions for Autocad and Rhino.

-Jack de Valpine

Martin Moeck wrote:

Hi Franceso, Meshlab seems to support meshes, but not point clouds? I have raw xyz coordinates from a scanner - no mesh. Martin -----Original Message----- From: [email protected] on behalf of Francesco Anselmo Sent: Thu 3/15/2007 1:40 PM To: Radiance general discussion Subject: Re: [Radiance-general] point cloud data (1) and hardware life (2) Hi Martin,

1) What algorithms or freeware would you suggest to make triangles or polygons out of point cloud data obtained by 3D laser scanning (historic architecture)? I need to minimize the number of triangles and would prefer polygons.

I have used MeshLab http://meshlab.sourceforge.net/ and VTK (directly or through MayaVI or Paraview) for similar purposes. Francesco _______________________________________________ Radiance-general mailing list [email protected] http://www.radiance-online.org/mailman/listinfo/radiance-general _______________________________________________ Radiance-general mailing list [email protected] http://www.radiance-online.org/mailman/listinfo/radiance-general

-- # Jack de Valpine # president # # visarc incorporated # http://www.visarc.com # # channeling technology for superior design and construction
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Martin,

Every laptop I've had said to not leave the computer plugged in 24/7. Better to buy the best battery up front. In 2-4 years, you will not want to shell out $150 on a new battery for an old computer. Ice packs? Only if you decide to overdrive your processor!

Mark