MantisBT - VTK
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ID	Project	Category	View Status	Date Submitted	Last Update
0003698	VTK	(No Category)	public	2006-09-01 16:24	2007-08-28 15:59

Reporter	Kathryn Hayes
Assigned To	Mathieu Malaterre
Priority	low	Severity	minor	Reproducibility	unable to reproduce
Status	closed	Resolution	unable to reproduce
Platform		OS		OS Version
Product Version
Target Version		Fixed in Version
Project
Type

Summary	0003698: vtkImageFlip broken on 32-bit Linux Release builds
Description	We are getting incorrect results when using vtkImageFlip on optimized (Release) 32-bit Linux builds. When we use our vtkFreeSurferReader (which uses vtkImageFlip) to read in a MRI volume, we see noise in the image, banding in the slices, and the slices are ordered incorrectly. If we comment out the line with the vtkImageFlip, we have an upside down, but otherwise correct volume. We have been able to replicate this problem consistently on these two machines: Linux 2.6.9-5.ELsmp #1 SMP Wed Jan 5 19:30:39 EST 2005 i686 i686 i386 GNU/Linux Red Hat Enterprise Linux WS release 4 (Nahant) gcc (GCC) 3.4.3 20041212 (Red Hat 3.4.3-9.EL4) Linux 2.6.15 #1 SMP PREEMPT Fri Feb 17 17:54:06 EST 2006 i686 unknown unknown GNU/Linux Slackware 10.2.0 gcc (GCC) 3.4.5 We are using the Slicer-2-6 tagged VTK. Here is a tcl script that demonstrates the problem. The expected output is 3 windows with white circles. The first one has the circle in the lower left, and the other two have it in the lower right. The middle one should be corrupted on a platform with the bad flipper. I have attached a file with a screenshot of the incorrect behavior that we are seeing. We have been unable to replicate this bug with a Debug build on either 32 or 64 bit Linux, and both Debug and Release builds on 64 bit Linux seem to work fine. Test script ========================== foreach inst {e vorig vflip vflipNoOpt flip flipNoOpt} { catch "$inst Delete" } vtkImageEllipsoidSource e e SetCenter 75 75 0 vtkImageFlip flip vtkImageFlip flipNoOpt set xpos 20 set ypos 20 foreach v {vorig vflip vflipNoOpt} { vtkImageViewer $v $v SetPosition $xpos $ypos incr xpos 350 $v SetColorWindow 255 $v SetColorLevel 128 $v Render } vorig SetInput [e GetOutput] foreach f {flip flipNoOpt} { $f SetInput [e GetOutput] $f SetFilteredAxis 0 v${f} SetInput [$f GetOutput] } flipNoOpt OptimizationOff foreach v {vorig vflip vflipNoOpt} { $v Render }
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Attached Files	opt-cvs-nighlty-test.jpg (34,757) 1969-12-31 19:00 https://www.vtk.org/Bug/file/5645/opt-cvs-nighlty-test.jpg

Issue History
Date Modified	Username	Field	Change
2007-08-28 15:58	Zack Galbreath	Project	@21@ => VTK
2007-08-28 15:59	Zack Galbreath	Assigned To	Will Schroeder => Mathieu Malaterre
2007-08-28 15:59	Zack Galbreath	Reproducibility	always => unable to reproduce
2007-08-28 15:59	Zack Galbreath	Status	backlog => closed
2007-08-28 15:59	Zack Galbreath	Resolution	suspended => unable to reproduce
2007-08-28 15:59	Zack Galbreath	Summary	Goodsite => vtkImageFlip broken on 32-bit Linux Release builds
2007-08-28 15:59	Zack Galbreath	Note Deleted: 0008148
2011-06-16 13:11	Zack Galbreath	Category	=> (No Category)

Notes