FYI, Xmedcon has a very nice table of orientations and corresponding
direction cosines, see:
http://xmedcon.sourceforge.net/docs/orient/medcon3.html
----- Original Message -----
From: "Erik-Jan Vlieger" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, November 01, 2002 6:24 PM
Subject: Re: image order in SIENA
On Thursday 31 October 2002 22:45, you wrote:
> Just an aside, I think the Analyze format *can* provide orientation
> information, so long as it is used correctly. It is a small gamble to
> trust that it is set correctly by all software in your data processing
> stream, but the hdr.hist.orient field, when used correctly, can provide
all
> the orthogonal orientation information required. Unfortunately, very
> little 3rd party software uses this field correctly. I don't know why it
> is an *optional* field, it would save everyone a lot of headaches if it
> were used regularly and correctly. For anyone interested in the details,
> please see a beta attempt to implement handling of this field in the
> mri_toolbox download at http://eeg.sourceforge.net, where the matlab code
> there is fully documented. No guarantee that it actually does handle this
> field correctly, although some beta testing indicates that it works.
Just a question, does this field allow for the three image orientation axis'
to be stored. which means 9 floats?
I wanted to store the exact image orientation, and started using a third
file
for that.
Thanks,
Erik-Jan
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