GM and WM images generated by the segmentation are usually written as
uint8. Therefore, the Dartel warped versions are also written as 8
bit. I do modulated images slightly differently in order to account
for the wider range of image intensities that may arise from
multiplying by the Jacobian determinants.
If the c1*.nii images generated by the segmentation are converted to
floating point (eg via ImCalc), then the DARTEL warped versions should
also be floating point.
Best regards,
-John
On 1 July 2011 08:40, Claudia Cullell <[log in to unmask]> wrote:
> Dear SPM users,
>
> Today I realised that spm8 when applying DARTEL flow fields to native
> space (create warped), turn images with non modulation into int8 datatype
> while modulated images preserve the anterior data type (float32). Any idea
> why this happens? I would like to preserve the data type. I would like
> that my non modulated images remain float32 data type, is it posible?
>
> Thank you very much!
>
> Claudia
>
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