> Can you explain to me the algorythm ot the coregistration with mutual
> information please (if you are not busy!). Thanks.
The basic idea is that there is an objective function that gets maximised.
The objective function is Mutual Information, which can be derived from
joint-histograms of the image pair. The following web sites may help here:
http://www.fil.ion.ucl.ac.uk/spm/course/notes02/spatial/img9.htm
http://www-ipg.umds.ac.uk/d.hill/research/mi.html
http://www.icaen.uiowa.edu/~aip/Lectures/maes_multimod_reg.pdf
Alternatively, an internet search for mutual information registration will
provide lots of hits.
For the optimisation (the strategy for maximising the objective function),
the best reference is Chapter 10 of
http://www.library.cornell.edu/nr/bookcpdf.html
The following sections should be most helpful:
http://www.library.cornell.edu/nr/bookcpdf/c10-0.pdf
http://www.library.cornell.edu/nr/bookcpdf/c10-1.pdf
http://www.library.cornell.edu/nr/bookcpdf/c10-2.pdf
http://www.library.cornell.edu/nr/bookcpdf/c10-5.pdf
Best regards,
-John
--
Dr John Ashburner.
Functional Imaging Lab., 12 Queen Square, London WC1N 3BG, UK.
tel: +44 (0)20 78337491 or +44 (0)20 78373611 x4381
fax: +44 (0)20 78131420 http://www.fil.ion.ucl.ac.uk/~john
|