RE: My Volumetric data

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From: Dave Akers (dla@engr.sgi.com)
Date: 08/01/2000 12:38:12


Gareth and Vasu,

  I've tested Volumizer with unsigned short format and I'm finding no
problems at all. Both imgcopy and voglBasic seem to do the right thing for
my test cases. Can you send me (to dla@sgi.com) an example case that
doesn't work? What specifically do the results look like?

  Not sure about the imgcopy problems with float format, but I'll look
into it.

Dave

On Tue, 1 Aug 2000, Gareth Morgan wrote:

> Good news:
> Experimenting myself just now I have got voglBasic to work with float data
> type. Though, as you say,
> it appears not to work with ushort.
>
> Bad news:
> imgcopy doesn't seem to produce sensible output when converting to float
> (even if you use -m0.0 & -M1.0 flags to set min/max values), and produces a
> garbled version of the image.
> You may have to write your own conversion program to do this.
>
> -----Original Message-----
> From: Vasudevan Ramanujam [mailto:devvas@yahoo.com]
> Sent: 01 August 2000 14:58
> To: Gareth Morgan
> Cc: info-volumizer@corp.sgi.com
> Subject: RE: My Volumetric data
>
>
> Hi
> I am running my applications on SGI Onyx2 with 64 MB
> texture memory.
> I was able to view my data after converting the data
> type from "ushort" to "char",but the problem is that
> it comes at the expense of volumetric detail.The data
> now is just half the original size.
> I tried converting the output data type to "long"
> ,but the Volumizer says it is an unknown data
> format.Does Volumizer example applications accept only
> "char" data type?
> Please let me know the other data types supported.
> Thanks
> Vasu
>
>
>
>
>
> > Hi all
> >
> > Can anybody please help me with my problem?Here it
> > is:
> >
> > My Volumetric data(female body anatomy) is
> > Unsigned
> > short and it is 128*128*1024*2 bytes =33554432 big.I
> > converted it into a Tif file so that Volumizer can
> > accept it,but it is not working.So,i have made a
> > smaller version of the data set, which is
> > 64*64*256*2=2097152 bytes long.But still the
> > Volumizer
> > example application does not accept it.HOw do i code
> > around it so that i will be able to visualize my
> > data
> > set.Any help in this regard is appreciated.
> > Thx in advance
> > Vasu
> >
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