> I read that when SPM2 does spatial normalization, it also searches for
> optimal pixel value scaling factor. Is there anyway to know what this
> final value is once the normalization is done?
There are actually 4 scaling factors that are supposed to model linear
intensity variability over the volume. You can get these from
spm_normalise.m at around line 311 by including e.g:
s = T((s1+1):end)
and somehow saving the value of s. Note also that you'll need to include the
scaling effects from around lines 160 and 163, which scales the intensities
to be within a more reasonable range.
Best regards,
-John
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