Thanks very much John. That, in fact, was A problem. I used coreg reslice on the
second image so that both images now have a negative x voxel size and are stored in RPI
order. Unfortunately the same error in HDW still occurs. Any other ideas?
On Wed, 7 Jan 2009 19:39:40 +0100, John Ashburner <[log in to unmask]> wrote:
>My best guess is that one of the images is stored left-handed, but the other
>is stored right-handed. If you display an image, does one have a negative x
>voxel size, but the other not?
>On Wednesday 07 January 2009 18:31, Kristopher Kosmatka wrote:
>> I have been encountering an error with high dimensional warping, I hope
>someone may know a solution. I have two grey matter segment images that have
>been previously rigidly coregistered. The images are unsigned INT data type,
>256x124x256 voxels. Nothing is unusual that I can see about the images. I
>am running SPM5 revision 1782, in MATLAB 7.7, on x84_64 machine running
>Scientific Linux (An enterprise Red Hat clone). The symptoms: All default
>settings were used in the HDW setup. The HDW begins and prints the following
>to standard output:
>> >> --------------------------
>> Running "High-Dimensional Warping"
>> Generating uniform affine transformation field
>> Warping (iterations=8 regularisation=4)
>> This is followed by many X's ad infinitum. I've allowed this to continue
>> running for 15-20 minutes and it just continues like this without ever
>> finishing the job. Recompiling the mex files in my SPM distribution using
>> the makefile in src failed to fix the problem. Has anyone encountered this
>> problem, any ideas?
>> Many thanks,
>> Kristopher J. Kosmatka
>> Research Specialist
>> Johnson Neuroimaging Lab
>> University of Wisconsin - Madison
>> Wm. S. Middleton Memorial VA Hospital - GRECC