ok -- since no objections (but no blessings either) -- I have uploaded derived
atlas in a separate binary package
fsl-harvard-oxford-cortical-lateralized-atlas
with fsl-atlases package only recommending it (not depending on it strongly).
Enjoy
On Fri, 19 Apr 2013, Yaroslav Halchenko wrote:
> Dear FSL People,
> Echoing my previous emails and recent update of atlases shipped with FSL, I
> have cooked up a simple derived atlas: Harvard-Oxford Cortical
> (Lateralized) which I am considering to upload as a part of
> fsl-harvard-oxford-atlases binary package in NeuroDebian.
> Its difference from the stock Harvard-Oxford Cortical is simple: all areas are
> now present twice, separately for left and right hemisphere.
> Probabilities are computed based on liberalization probability within HO
> subcortical atlas shipped with FSL.
> Due to int8 rounding, probabilities in Lateralized atlas for some voxels
> might not add up exactly to the probability in non-Lateralized version
> and be a percent less in the sum.
> Representative voxel for each area is the one with maximal probability and
> closest to the geometrical center of the area (if there are multiple such
> voxels).
> Areas are sorted by the area and not by hemisphere.
> Such derived atlas would be always regenerated if updates to the
> Harvard-Oxford atlases would follow, and there are few basic assertions
> in the code to verify that it remains "correct". Here is the code I
> cooked up for this purpose:
> http://anonscm.debian.org/gitweb/?p=pkg-exppsy/fsldata.git;a=blob;f=debian/fsl-harvard-oxford-cortical-lateral;h=4a40f5896a3bca5ef9ea89d4821562ba4b41c526;hb=_enh/harvard-oxford-lateralized
> And you can investigate the generated volumes/atlas (xml):
> http://www.onerussian.com/tmp/HarvardOxford-Cortical-Lateralized-20130419.tar.gz
> Please let me know if you have any objections, e.g. you would advise to ship
> generated atlas in a separate binary package, e.g.
> fsl-harvard-oxford-atlases-derived to disambiguate on the origins of the atlas
> etc. Or if you spot some mistakes.
> Thank you in advance
--
Yaroslav O. Halchenko, Ph.D.
http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org
Senior Research Associate, Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834 Fax: +1 (603) 646-1419
WWW: http://www.linkedin.com/in/yarik
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