[Insight-users] imageregistration with mask fails because of all points outside of all points mapped outside of moving image

[Luis Ibanez]

Hi Michiel,

Thanks for sharing your findings in this problem.

Can you tell us more about the mask (the segmentation)
that you created ?

Have you checked this mask with any visualization
application ?

What are the pixel values ?

Is there a chance that you could share that binary image
with us ?


    Thanks


          Luis

---------------------------------------------------------------------------
On Fri, Mar 5, 2010 at 11:28 AM, michiel mentink
<michael.mentink at st-hughs.ox.ac.uk> wrote:
> Dear all,
>
> When running an image registration algorithm with mask, I get this error:
>
> File:
> /MMprogs/src/ITK_src/Code/Algorithms/itkMeanSquaresImageToImageMetric.txx
> Line: 364
> Description: itk::ERROR: MeanSquaresImageToImageMetric(0x95f63f0): All the
> points mapped to outside of the moving image
>
> I've traced this to the following problem:
> in ImageMaskSpatialObject->IsInside(), all points are found outside of the
> mask/image (?)
>
> and this is because the boundingbox of the mask has bounding values of 0, 0,
> 0, 0, 0, 0, so indeed, there are no points that
> can be found inside these values.
>
> I am a bit stuck now, apparently, the mask that I created from a segmented
> volume is not converted into a bounding box correctly.
>
> Where do I check to find out why this is happening?
>
> cheers,
>
> Michael
>
>
> ps: some more info about my data:
>
> new moving image origin:    [0, 0, 0]
> fixed image size:      [215, 172, 48]
> fixed image origin:    [44.0625, 0, 0]
> fixed image spacing:   [0.3125, 0.3125, 1.9808]
> fixed image direction:
> 1 0 0
> 0 1 0
> 0 0 1
>
>
> moving image size:      [512, 512, 52]
> moving image origin:    [0, 0, 0]
> moving image spacing:   [0.3125, 0.3125, 1.92911]
> moving image direction:
> 1 0 0
> 0 1 0
> 0 0 1
>
>
> image mask size:      [215, 172, 48]
> image mask origin:    [44.0625, 0, 0]
> image mask spacing:   [0.3125, 0.3125, 1.9808]
> image mask direction:
> 1 0 0
> 0 1 0
> 0 0 1
>
>
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