[Insight-users] Orientation Information

[J.S.Wijnhout at lumc.nl]

Hi,

As far as I know ITK does not use a standard coordinate system, it uses
the coordinate system provided by the image data. If you use DICOM, the
coordinate system is the patient coordinate system (with the z-axis
running from foot to head, the x-axis pointing to the left side of the
patient). However in older DICOM formats it was customary to use the
device coordinate system, which can be different for each device type
(which is why it should not be used any longer). I can imagine that for
data other than DICOM, different coordinate system definitions exist.

Hth,
Jeroen

-----Original Message-----
From: insight-users-bounces at itk.org
[mailto:insight-users-bounces at itk.org] On Behalf Of Luke Bloy
Sent: woensdag 27 augustus 2008 0:33
To: ITK Users
Subject: [Insight-users] Orientation Information

Hi can some one explain what Image->GetDirection() will return. My 
understanding is that it returns the axes directional cosigns, but i am 
unsure what coordinate system they are expressed in? reading this 
http://www.itk.org/Wiki/Proposals:Orientation has left me more confused.

-thanks
Luke

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