From: Praveen Bhaniramka (praveenb++at++gauri.engr.sgi.com)
Date: 05/23/2002 10:31:56
Forwarding replies from info-volumizer...
-- ----------------------------------------------------------------- Praveen Bhaniramka Member of Technical Staff (MTS) praveenb++at++sgi.com Advanced Graphics Division (650)933-1785 Silicon Graphics, Inc. --------------------------------------------------------------------------- Forwarded message ---------- Date: Thu, 23 May 2002 18:11:25 +0100 From: Gareth Morgan <gmorgan++at++sgi.com> To: 'Praveen Bhaniramka' <praveenb++at++gauri.engr.sgi.com>, "'ens96ddl++at++cs.umu.se'" <ens96ddl++at++cs.umu.se>, info-volumizer++at++kraftwerk.corp.sgi.com Subject: RE: Volumizer: 3D textures (fwd)
Daniel....
How many slices are there and what are the dimensions of each slice ? Try altering the scale appropriately when viewing the volume, ie if there where 100 slices,each 1000 by 1000 and aligned in X and Y, then set the X and Y scale to 10 and the Z scale 1. If you were using volview to view the volume the -scale 10 10 1 command line argument does this.
You would have to sub-sample the data to reduce the size in texture mem, i.e. shrink each slice. The most conveinent way to do this for large numbers of images I find is with ImageVision Tcl scripts using imgtcl, see the imgtcl man page and ImageVision Library programming guide for more details.
Gareth Morgan Technical Consultant SGI Professional Services 1530 Arlington Business park Theale, Reading RG7 4SB Direct Dial 0118 925 7603 Mobile 07802 643488 e-mail:gmorgan++at++sgi.com
-----Original Message----- From: Praveen Bhaniramka [mailto:praveenb++at++gauri.engr.sgi.com] Sent: 23 May 2002 17:46 To: info-volumizer++at++kraftwerk.corp.sgi.com Subject: Volumizer: 3D textures (fwd)
Forwarding...
-- ----------------------------------------------------------------- Praveen Bhaniramka Member of Technical Staff (MTS) praveenb++at++sgi.com Advanced Graphics Division (650)933-1785 Silicon Graphics, Inc. -----------------------------------------------------------------
---------- Forwarded message ---------- Date: Thu, 23 May 2002 17:08:13 +0200 (MEST) From: Daniel Djurvall <ens96ddl++at++cs.umu.se> To: Praveen Bhaniramka <praveenb++at++gauri.engr.sgi.com> Cc: info-performer++at++sgi.com Subject: Volumizer: 3D textures
I want to create a 3D texture image from a bunch of .png images or .rgb images. I am using the iflto3dtiff program from the Volumizer2/src/util/tiff/
There is however a problem with the created 3Dtexture file. It is not as nice as the ones fromVolumizer/data/medical/Phantom/CT.Head.Small.char.tif . My images does not have the foggy continuity as the one above. I attached a snapshot of my 3Dtexture image.
And the 3Dtexture are extremely large ~1GB. Which is the best way to make them smaller? Make the 2D images smaller vi imgcopy to .gif?
I am extremely grateful for any suggestion how to move on!! //Daniel
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