[Insight-users] Orientation Information
luis.ibanez at kitware.com
Wed Aug 27 08:25:26 EDT 2008
Please start by looking at the diagrams
The blue tubes on the right side are representing
the bones in the right leg of a patient.
The X axis points to the patient's left side
The Y axis points to the patient's back
The Z axis points to the patient's head
This coordinate system is considered to be the base
Images acquired in this form will have a Direction
Matrix equal to Identity.
Image acquired in a different orientation, will have
a Direction matrix containing the components of the
image axis expressed in term of this base coordinate
Luke Bloy wrote:
> 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.
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