Hi,
On 4 May 2007, at 23:53, wolf zinke wrote:
> Hi,
>
> Does avwstats++ calculate the centre of gravity as the geometric
> centre, or is it a weighted centre of mass where the image
> intensity are taken into account?
It uses the data that you give it - i.e. is the centre of mass.
> When calculating the CoG on the thresholded brain image and the
> aprobiate mask image (produced with 'ip') I get slightly different
> results suggesting the weighted CoG.
Indeed.
Cheers.
>
> Thanks for any info,
> wolf
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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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