[Insight-users] itk::CenteredTransformInitializer - fixed image onto moving image?

[Johnson, Hans J]

Registration is a "pull from" rather than a "push to" frame work.

Could you interpret your drawing as "The center voxel in the fixed image ( C_fixed )  corresponds to the physical location in the moving image as mapped by the transform Tx(C_fixed) "?  That is how the registration needs to work.  One must "pull from" the moving image into the fixed image space.

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: Rick Frank <rickf at fullspectrumsw.com<mailto:rickf at fullspectrumsw.com>>
Date: Thursday, April 19, 2012 8:07 AM
To: "insight-users at itk.org<mailto:insight-users at itk.org>" <insight-users at itk.org<mailto:insight-users at itk.org>>
Subject: [Insight-users] itk::CenteredTransformInitializer - fixed image onto moving image?

Hi,

Tracing through this code in the debugger, and double checking the numbers by drawing things on paper it seems that this class centers the –fixed- image onto the –moving- image.

I assumed it was the other way around…

Am I understanding this correctly? It seems that as part of the registration process, you would keep the fixed image “fixed” and center the moving image onto the fixed image….so that only one image “moved” throughout the whole chain?

Maybe there’s something that I’m not understanding?

Thanks!

Rick Frank


________________________________
Notice: This UI Health Care e-mail (including attachments) is covered by the Electronic Communications Privacy Act, 18 U.S.C. 2510-2521, is confidential and may be legally privileged.  If you are not the intended recipient, you are hereby notified that any retention, dissemination, distribution, or copying of this communication is strictly prohibited.  Please reply to the sender that you have received the message in error, then delete it.  Thank you.
________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.itk.org/pipermail/insight-users/attachments/20120419/ce57ec6f/attachment.htm>