[Insight-developers] ImageSpacing or not ImageSpacing

[Johnson, Hans J]

I have strong opinions that this should be on.  I assume that ITK defaults to working in physical space, and I depend on it working in physical space.  If distances or any other computations are done in index space, I would consider that dangerous.

For those developers who are skilled enough to understand the ramifications of choosing a faster algorithm that uses index space optimizations, they should also be skilled enough to change from the default option.

Hans


--
Hans J. Johnson, Ph.D.
hans-johnson at uiowa.edu<mailto:hans-johnson at uiowa.edu>
Assistant Professor of Psychiatry
University of Iowa Carver College of Medicine
W278 GH, 200 Hawkins Drive
Iowa City, Iowa 52242
Phone:  319-353-8587

From: Bill Lorensen <bill.lorensen at gmail.com<mailto:bill.lorensen at gmail.com>>
Date: Fri, 16 Sep 2011 16:28:58 -0400
To: ITK <insight-developers at itk.org<mailto:insight-developers at itk.org>>
Subject: [Insight-developers] ImageSpacing or not ImageSpacing

Folks,

Our recent discussions regarding consistency of the distance map filters hightlights the inconsistent use of ImageSpacingOn/Off in the toolkit. There are about 33 classes that have the option. I have not checked them all, but they are not all consistent.

Should we make sure we are consistent, UseImageSpacingOn?

I am willing to investigate this?

Bill

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