Re: [Meshlab-devel] quadric filters

[Paolo C. <pao...@is...>]

skunkwerk wrote:
> i tried the hausdorff distance plugin on a number of models, such as
> www.akbars.net/20.zip
> i noticed two issues:
> 1)  when the model & a copy of itself in another layer are open, the quadric
> texture plugin doesn't seem to reduce models - or at least, the display
> isn't updated as the model looks exactly the same.
>   

Probably you have simply forgotten to disable the view of one layer that 
occludes the simplified one.

> 2)  the hausdorff distance doesn't really tell you a lot - on one model, i
> got the following results after a series of 6 reductions:
>
> 0.001267
> 0.012462
> 0.035062
> 0.040926
> 0.036652
> 0.027046
>
> while on the model mentioned above (20.zip) i got the following:
> .99
> 1.7
> 4.7
> 8.8
> 11.9
> 14
> 14.4
> 15.3
> 15.3
>
> how can you get some sense of the "quality" of the reduction from looking at
> these numbers?  any ideas?
>   
Read these papers. accurately.
http://vcg.isti.cnr.it/publications/papers/metro.pdf
http://citeseer.ist.psu.edu/cignoni97comparison.html


-- 
Paolo Cignoni  -- Senior Researcher
Visual Computing Laboratory - ISTI - CNR 
http://vcg.isti.cnr.it/~cignoni

ISTI - CNR 
Via Moruzzi 1,
56124 Pisa
ITALY