hi,
thanks stefan for that insight.I would like to ask 2 more questions.
1) I am just hoping that there could be a way to set the spacing of X and Y
as 1 without it having a negative effect on the output image quality ?can
it be done?
2)Also, Can anybody explain what the lines pasted below mean and/or if it
has any relevant documentation about it. I get these as i try to run the
program. I am guessing it could be related to actual input image bounds ?
but since the image has a dimension of 512X512X1319, the X and Y s still
dont make much sense. Is there a direct corelation or a calculation that is
performed inside MITK ?
[2.560] [mitkItkImageFileReader] [219.785, 219.785, 1318.5]
[2.560] [mitkItkImageFileReader] [-0.214844, -0.214844, -0.5]
[2.560] [mitkItkImageFileReader] number of image components: 1
[2.560] [mitkItkImageFileReader] ...finished!
Thanks and best regards,
On Tue, Mar 18, 2014 at 11:49 AM, Kislinskiy, Stefan <
s.kislins...@dkfz-heidelberg.de> wrote:
> Hi,
>
> a first guess would be that you mix up indices with world coordinates and
> Z just seems to work coincidentally since it might have a spacing of 1. As
> an additional note be careful when working with world coordinates and
> indices in parallel as pixel coordinates are center-based, e.g., a pixel
> with extents [1, 1, 1] in world coordinates at the origin has the bounds
> [-0.5, 0.5, -0.5, 0.5, -0.5, 0.5] in world coordinates.
>
> Cheers,
> Stefan
> ________________________________________
> Von: Jatin Nath [jatin.nath.bm...@iitbhu.ac.in]
> Gesendet: Dienstag, 18. März 2014 11:33
> An: mitk-users@lists.sourceforge.net
> Betreff: [mitk-users] bounding object cropped dimensions mismatch ?
>
> hey mitk users,
>
> I am working on cropping a bounding object from a 3D mitk image. I have
> used the mitk::boundingobjectcutter class and am confused with the output I
> get from the cropping.
> I manually enter the bounds for the bounding object which are the 6
> parameters in the form xmin, xmax, ymin, ymax, zmin, zmax. I am having
> trouble explaining the output image dimensions that I recieve.
>
> my input impage has a dimenion : 512X512X1320
>
> bounds parameters : 50 100 60 150 10 1150
>
> output dimensions : 116 209 1140
>
> as the output object according to me shoulde have dimensions in X as xmax
> - xmin, Y as ymax - ymin and Z as zmax- zmin.
>
> the output dimension for the Z axis seems to be the way I expect but X and
> Y axes give out "weird" values of 106 and 209 respectively.
>
> Can anybody explain this behaviour ? Is there another way to do the
> cropping ?
>
> Thanks in advance,
> Jatin Nath,
> School of BioMedical Engineering,
> Indian Institute of Technology (Banaras Hindu University), Varanasi
>
--
Jatin Nath,
School of BioMedical Engineering,
Indian Institute of Technology (Banaras Hindu University), Varanasi
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