[Insight-users] Imagemask for registration: possible to create non-structured mask?

[michiel mentink]

I've added the source code to this email too, it is imageRegistration8 to
which I added some things,
such as the mask.

cheers, Michael

On Tue, Feb 23, 2010 at 11:13 AM, michiel mentink <
michael.mentink at st-hughs.ox.ac.uk> wrote:

> thank you Luis, the source code compiles and links now.
>
> However, I get this runtime error:
>
> Starting proces...
>
> ExceptionObject caught !
>
> itk::ExceptionObject (0x998f420)
> Location: "void itk::MeanSquaresImageToImageMetric<TFixedImage,
> TMovingImage>::GetValueAndDerivative(const typename
> itk::ImageToImageMetric<TFixedImage,
> TMovingImage>::TransformParametersType&, typename
> itk::ImageToImageMetric<TFixedImage, TMovingImage>::MeasureType&, typename
> itk::ImageToImageMetric<TFixedImage, TMovingImage>::DerivativeType&) const
> [with TFixedImage = itk::Image<float, 3u>, TMovingImage = itk::Image<float,
> 3u>]"
> File:
> /MMprogs/src/ITK_src/Code/Algorithms/itkMeanSquaresImageToImageMetric.txx
> Line: 364
> Description: itk::ERROR: MeanSquaresImageToImageMetric(0x99423f0): All the
> points mapped to outside of the moving image
>
>
> Just to be sure, I swapped moving and fixed image around and that didn't
> help...
>
> I'd like to troubleshoot what is going wrong. If I understand correctly
> (and correct me if I'm wrong), the register algorithm tries to compare
> points
> that are outside one of the images. Both images do not have the same size,
> one of them is approximately half the size of the other.
>
> Can anybody give me some ideas how to get information about point
> coordinate locations etc?
>
> cheers, Michael
>
>
> On Mon, Feb 22, 2010 at 11:34 PM, Luis Ibanez <luis.ibanez at kitware.com>wrote:
>
>> Hi Michiel,
>>
>> Why do you want to use a non-structured 3D mask, if you already
>> have a binary mask from your segmentation, and you just need
>> to connect it to the itk::ImageMaskSpatialObject ?
>>
>> Please look at the example:
>>
>>         Insight/Examples/Registration/
>>                            ImageRegistration12.cxx
>>
>> It shows how to use image masks in a registration process.
>>
>>    Regards,
>>
>>
>>             Luis
>>
>>
>> --------------------------------------------
>> On Mon, Feb 22, 2010 at 12:23 PM, michiel mentink
>> <michael.mentink at st-hughs.ox.ac.uk> wrote:
>> >
>> > I have a segmented 3D volume in binary format (foreground, background).
>> >
>> > I'd like to convert this into an image mask, so I can rigidly register
>> the
>> > segmented volume, using the mask, to its' original, unsegmented volume.
>> > (I'm basically extending the imageRegistration8 example).
>> >
>> > Is it possible to create a non-structured 3D mask? (with random entries
>> > for mask points)
>> >
>> > Has anybody got an example how to do so?
>> >
>> > cheers,
>> > Michael
>> >
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>
>
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