[Insight-users] N4ITK running error

[Jon Haitz Legarreta]

Dear Shandra,
segmentation faults have to do with memory access (you may be trying to
access an unallocated space). If the program is of your own making, you may
want to check whether you are allocating all necessary memory space through
the corresponding variables/pointers.

Having read what Nicholas says, it looks like you need to specify some
dimensions so that the program knows who much memory space it needs to
allocate. If you fail to specify those arguments, the program may try to
access a null-length memory extension.

Both if its a program of your own or if it is an ITK example, you can debug
step by step to know where the segmentation fault arises, and whether all
implied variables seem to be OK.

HTH,
JON HAITZ



On 30 January 2014 14:13, Nicholas Tustison <ntustison at gmail.com> wrote:

> Hi Shandra,
>
> You didn't specify any arguments for -c or -b.  If I remember
> correctly, try something like '-b [200] -c [50x50x50x50,0]'.
>
> Nick
>
> On Jan 30, 2014, at 8:10 AM, Shandra Gutierrez Diaz <
> Shandra.GutierrezDiaz at UGent.be> wrote:
>
>
> Hi,
>
> I am trying to work with N4ITK (N4BiasFieldCorrectionImageFilter). I have
> built it succesfully but when running it, it gives error.
> >./N4.exe 2 -i t81slice.nii.gz -o t81sliceCorrect.nii.gz -s 4 -c -b
> Segmentation fault: 11
> >./N4.exe -d 2 -i t81slice.nii.gz -o t81sliceCorrect.nii.gz -s 4 -c -b
> terminate called throwing an exceptionAbort trap: 6
>
> Has anyone faced the same problem or any clue what can be?
> Best,
> Shandra
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