[vtkusers] thresholding question

[Bill Lorensen]

Hopefully you have cvs...

cvs -d:pserver:anonymous at visualizationtoolkit.org:/vtk/cvsroot login anonymous
CVS password: vtk
cvs -d:pserver:anonymous at visualizationtoolkit.org:/vtk/cvsroot checkout vtkdata/pineRoot




At 11:36 AM 12/11/00 -0500, anast.jm at pg.com wrote:

>Bill, where can I find the pine_root data set. I've downloaded about every piece
>of vtk data I can find but no pine_root.....thanks, john
>
>
>                                                                 
>  Internet Mail Message                                          
>  Received from host:      public.kitware.com                    
>  [208.136.18.25]                                                
>                                                                 
>
>
>From: Bill Lorensen <wlorens1 at nycap.rr.com>@public.kitware.com on 12/06/2000
>10:33 PM
>                                                                                                  
>       Bill Lorensen <wlorens1 at nycap.rr.com>           To:   Tao-Pak Chris Tsui                   
>                         @public.kitware.com        <tsuitp at yahoo.com>,                           
>                                                    vtkusers at public.kitware.com                   
>                                                       Cc:    (bcc: John Anast-JM/PGI)            
>                                    Sent by:   Subject:      Re: [vtkusers] thresholding question 
>           vtkusers-admin at public.kitware.com                                                      
>                         12/06/2000 10:33 PM                                                      
>                                                                                                  
>                                                                                                  
>
>
>
>
>vtkSliceCubes processes 4 slices at a time.
>
>See the example:
>patented/examplesTcl/genPineRoot.tcl
>
>Bill
>
>At 08:23 PM 12/5/00 -0800, Tao-Pak Chris Tsui wrote:
> >Greetings!
> >
> >I am looking at "threshold.tcl" as an example for my
> >application..  it works fine if the dataset I have is
> >not large..  what I have is about 100mb of CT data..
> >it's just too slow to read the entire 100mb of data
> >into memory (indeed seems impossible for my 128mb RAM)
> >each time when I alter the threshold value...
> >
> >is there any way to solve this problem?  is there
> >something like vtkMCubesReader to read 4 slices at a
> >time?  (vtkMCubesReader is giving polydata but
> >vtkThreshold is expecting some scalar values as
> >input.. )
> >
> >
> >the data I really want to extract is some tiny steel
> >balls which has been implemented into a skull..  these
> >balls appear to be much brighter from the CT slices.
> >
> >is there any way to extract these tiny balls?  Thanks
> >so much!!
> >
> >Chris