Mark,
The scaling is off - for the modulus as well. I check the formats.
Thanks,
Daryl
On Nov 27, 2006, at 4:20 PM, Mark Jenkinson wrote:
> I'm afraid we cannot really tell what is going wrong just from this
> information. The command line is fine.
>
> If you look at intensities in the phase image (using FSLVIEW) on
> either side of an obvious phase wrap - are they different by 6.28?
> (i.e. 2*pi) If not, then either the input image is not scaled
> correctly,
> or these are not normal phase wraps.
>
> It is also possible that the masking is not working well (based on the
> absolute image). If that is the case it might be improved by using
> your own mask (via the -m option).
>
> If none of this helps, please let us know and we can have a look
> at the data.
>
> All the best,
> Mark
>
>
>
> On 27 Nov 2006, at 13:08, Daryl E. Bohning wrote:
>
>> I tried feeding prelude a phase map in radians (option -p), and a
>> modulus (option -a) image, and expected to get as output an
>> "unwrapped" phase map in some form, but when I looked at the
>> output (option -u) with FSLVIEW, it looked the same as the input
>> phase image!? What am I doing wrong?
>>
>> "prelude -a $modfile -p $fazfile -u uwpfile -f -v"
>>
>> Thanks,
>> Daryl
>
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