[vtkusers] VTK and memory issues.

[Sebastien Auclair]

No were dealling with polydata .. Not image data.
----- Original Message -----
From: "Leue, William M (Research)" <leue at crd.ge.com>
To: "'Mathieu Malaterre'" <Mathieu.Malaterre at creatis.insa-lyon.fr>;
"Sebastien Auclair" <sxa at fluent.com>
Cc: <vtkusers at public.kitware.com>
Sent: Friday, June 06, 2003 11:23 AM
Subject: RE: [vtkusers] VTK and memory issues.


> In addition to the helpful suggestions from the kitware document, if you
are
> doing image processing where most of the large data is point data, as
> opposed to polygon data, you should take a look at the
vtkImageDataStreamer
> class. It helps you to manage huge data sets that will not fit into
> available memory by manipulating extents in an iterative fashion, and
> filters and readers whose output goes to the streamer will have their
> extents similarly iterated using the regular pipeline extents propagation
> mechanism. The drawback, of course, is that all the filters have to know
how
> to work in a streaming mode. Many VTK filters do, but not all.
>
> -Bill Leue
>
> -----Original Message-----
> From: Mathieu Malaterre [mailto:Mathieu.Malaterre at creatis.insa-lyon.fr]
> Sent: Friday, June 06, 2003 10:57 AM
> To: Sebastien Auclair
> Cc: vtkusers at public.kitware.com
> Subject: Re: [vtkusers] VTK and memory issues.
>
>
> Sebastien,
> You might have a look at:
>
> How to handle large data sets in VTK:
> http://public.kitware.com/cgi-bin/vtkfaq?req=show&file=faq03.007.htp
>
> HTH
> mathieu
> Ps: a filter never change the input so each time you use a filter you
> have *one* input and *one* output.
>
> Sebastien Auclair wrote:
> > Greetings !
> >
> > Are VTK filters member of a pipeline holding DataSets instances between
> each
> > of them ?
> > If i have a pipeline starting from a vtkPolyData instance, a
> > vtkPolyDataNormals, vtkAppendPolyData, vtkPolyDataMapper and vtkLODActor
> ...
> >     .. Does such a pipeline involves 4 or 5 instances of the initial
> dataset
> > ? (i.e. One between each filter. )
> >     ... If yes, isn't there a way to clean a pileline ?
> >
> > We're having troubles with the memory vtk seems to be using.
> > Instead of taking around 200 Mo for displaying a huge 3D model, our
> > application actually takes 1.2Go !!!
> >
> > Thanks for any help !
> > ________________________
> > Seb
> >
> >
> > _______________________________________________
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>
>
> --
> Mathieu Malaterre
> CREATIS
> 28 Avenue du Doyen LEPINE
> B.P. Lyon-Montchat
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> http://www.creatis.insa-lyon.fr/~malaterre/
>
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