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toen
01/25/12 8:51pm

...and if you're using data from a noisy source (i.e. experimental tomography data) there are *much* better ways to generate a surface than thresholding by intensity. (If you only threshold, then generally your interpolating functions need to be dramatically underfitted to avoid surface artifacts.)

This process is known as 'segmentation' and there's a lot published about it. An old reference is appended to get you started.

cheers again,
toen


>>

Physica A: Statistical Mechanics and its Applications

Volume 339, Issues 12, 1 August 2004, Pages 145151

Proceedings of the International Conference New Materials and Complexity
Cover image
Techniques for image enhancement and segmentation of tomographic images of porous materials

Adrian P. Sheppard
Robert M. Sok,
Holger Averdunk

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Subject (listing for 'curvature calculations from a 3D point set')
Author Date Posted
curvature calculations from a 3D point set sid 01/23/12 11:42am
Re: curvature calculations from a 3D point set toen 01/25/12 8:43pm
Re: curvature calculations from a 3D point set toen 01/25/12 8:51pm
Re: Re: curvature calculations from a 3D point ... sid 02/02/12 1:20pm
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