MantisBT - VTK
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ID	Project	Category	View Status	Date Submitted	Last Update
0001559	VTK	(No Category)	public	2005-02-01 08:58	2016-08-12 09:54

Reporter	Hideaki Hiraki
Assigned To	Will Schroeder
Priority	normal	Severity	major	Reproducibility	always
Status	closed	Resolution	moved
Platform		OS		OS Version
Product Version
Target Version		Fixed in Version
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Type

Summary	0001559: MaximumDistance is left in vtkImageEuclideanDistance when ConsiderAnisotropy is On
Description	The following script should show a concentric distance map, but a very high value is shown spuriously on it. vtkSphere sphere vtkSampleFunction sample sample SetImplicitFunction sphere vtkImageThreshold thresh thresh SetInput [sample GetOutput] thresh ThresholdByUpper 0 thresh SetInValue 1 thresh SetOutValue 0 vtkImageEuclideanDistance distan distan SetInput [thresh GetOutput] vtkImageViewer viewer viewer SetInput [distan GetOutput] viewer SetColorWindow 2 viewer SetColorLevel 1 viewer Render In vtkImageEuclideanDistance, the default MaximumDistance is VTK_INT_MAX. The spurious parts keep the value unprocessed. Though I couldn't understand the algorithm, I found suspect lines in vtkImageEuclideanDistance.cxx : b=(int)(floor)((((buff[idx0]-buffer)/spacing)-1)/2); The variables buff[idx0] and buffer seem to be set squared distances. It's strange to divide only once by spacing. Moreover, if one of these variables was VTK_INT_MAX and spacing<<1, the result would overflow.
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Attached Files	distfix.patch (1,809) 1969-12-31 19:00 https://www.vtk.org/Bug/file/5296/distfix.patch

Issue History
Date Modified	Username	Field	Change
2011-06-16 13:11	Zack Galbreath	Category	=> (No Category)
2016-08-12 09:54	Kitware Robot	Note Added: 0036764
2016-08-12 09:54	Kitware Robot	Status	expired => closed
2016-08-12 09:54	Kitware Robot	Resolution	open => moved

Notes