How Camp wrote:
> "Tom Austin" <taustin> wrote in message news:44746fe4$1@news.povray.org...
> 
>> The animation is of a very small area in an underground mine.
>> Look at features in the data to get a sense of scale of the place.
>> The ceiling is 50-70 feet high!
> 
> 
> Wow, this is fascinating.  How was the original data collected?
> 
> - How
> 

Thanks for the interest....

Using a 3D area laser scanner, separate 'scans' are collected at each 
location.

This data is then 'aligned' together using various methods.

Then the aligned data is exported from the scanning software in vrml 3D 
files (which closely match POV-Ray mesh2 format).

A custom routine makes the vrml into a mesh2.

This is done for *each* scan.

So in this animation you are looking at (9) separate mesh2 objects - one 
for each scan.

If you look closely, small triangles are close to scan locations, and 
large triangles are far away from a scan location.  They overlap nicely 
as the alignment went fairly well.

At this time the data is not 'merged' into one cohesive dataset.
We've tried this in various ways only to fail each time.

If anyone has a suggestion on how to create one mesh, please let me know.


LAter... Tom

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