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Topic: Decimation (Read 8222 times)
Pau
Newbie
Posts: 1
Decimation
«
on:
May 16, 2012, 08:26:01 PM »
Hi there, I was just wondering if somebody could tell which are the principles behind the mesh decimation algorithm in photoscan.
Thanks in advance,
Pau
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Wishgranter
Hero Member
Posts: 1202
Re: Decimation
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Reply #1 on:
May 17, 2012, 12:16:09 AM »
if remember then was mentioned the POISON decmation algorithm..
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Alexey Pasumansky
Agisoft Technical Support
Hero Member
Posts: 15276
Re: Decimation
«
Reply #2 on:
May 17, 2012, 06:47:57 PM »
Hello Pau,
During decimation PhotoScan merges a pair of neighboring vertices in case the geometry modification is minimal. So plane areas are decimated much more than relief areas. It allows to deliver 3D-model details by significantly lower number of faces.
And what type of objects do you usually reconstruct?
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Best regards,
Alexey Pasumansky,
Agisoft LLC
EvanThoms
Newbie
Posts: 19
Re: Decimation
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Reply #3 on:
May 23, 2012, 07:35:39 PM »
When you go to the decimate mesh dialog, how does PhotoScan arrive at the suggested number of faces? And at this point, when making DEMs, how do I know what the resolution of a resulting DEM will be if I go ahead and decimate to that number?
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