CGAL users discussion list

But the values are labels, marked by numbers have no specific meaning (even if
only 0 and 1), unlike, say, an implicit function to which I seek a zero-set..

Quoting Laurent Rineau 
<>:

> On Monday 03 November 2008 22:12:26 
> 
>  wrote:
> > Hello,
> >
> > In order to generate a mesh for a 3D binary image (for example, but the
> > question is also for multiply-labelled images), I need an oracle function
> > which knows when a point is outside or inside (or in what domain). How do
> I
> > do such a check, when I only have the 3D image, sampled grid of the
> surface
> > as input? If I decide that every square is uniform, for example, won't the
> > surface converge to be staircase-shaped?
> 
> You can use a trilinear interpolation, to interpolate the image values 
> in-between the voxels.
> 
> -- 
> Laurent Rineau, PhD
> Engineer at GeometryFactory
> http://www.geometryfactory.com/
> -- 
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