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 CAD / LDraw Files / Parts / 6643
6642  |  6644
Subject: 
Re: 3D laser scanning
Newsgroups: 
lugnet.cad, lugnet.cad.dat.parts
Date: 
Wed, 23 Mar 2011 23:17:39 GMT
Viewed: 
524 times
  
In lugnet.cad, Philippe Hurbain wrote:
Present version is too detailed for a LDraw part, but it's easier to start with
a fine mesh (finer than this one) to use Sculptris. After enhancement, I
downsample the mesh using Meshlab.

One thing is missing: bottom of scan (especially in the hair). Generally I use
16 scans, 8 around and above part, and 8 below it to make sure to get all data.



Thanks, Philo!

In that case, I shall rescan without the head, from more angles, and with finer
settings - I was trying (unsuccessfully) to try and limit the polygon count by
scanning in lower resolution, but if you're using other software to downsample
afterwards then that isn't necessary.

Can your software read .SCN files? That is the native file format output by the
scanner; if you can read them then I can skip the STL translation.

Darrell



Message has 1 Reply:
  Re: 3D laser scanning
 
(...) Yes, better have more resolution at the beginning. In many cases I downsample differently on different sections of parts. Eg. for Dobby's head ((URL) I first reduced polygon count to a high value, then reduced again in all areas except (...) (14 years ago, 24-Mar-11, to lugnet.cad, lugnet.cad.dat.parts)

Message is in Reply To:
  Re: 3D laser scanning
 
Hi Darrel, (...) Indeed, the face is not really needed here. Your scanner properly creates a file in millimeter units, scaling by 2.5 directly provides LDU. (...) From my experience with laser scanner, some smoothing can't be avoided because the (...) (14 years ago, 23-Mar-11, to lugnet.cad, lugnet.cad.dat.parts)

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