[Insight-users] Model to Image Registration

[N.E. Mackenzie Mackay]

Thanks Luis,

	I have read through the examples and have a question.  If I have N  
points is the final result of the registration N different transforms  
or one for all the points? ( are the points transformed indipendantly  
or together? )

	I could use one or the other but I would prefer just one transform.   
My points describe a 2d surface of a bone and I want to match that to a  
ct image of the same bone.  I would like the transform to transform the  
points as a whole.  Just translating and rotating the points to the  
correct position in the image.

Neilson

On Jul 6, 2004, at 8:18 PM, Luis Ibanez wrote:

>
> Hi Neilson,
>
>
> Yes,
>
> ITK has PointSetToImage registration methods.
>
> Please look at the classes:
>
> http://www.itk.org/Insight/Doxygen/html/ 
> classitk_1_1NormalizedCorrelationPointSetToImageMetric.html
> http://www.itk.org/Insight/Doxygen/html/ 
> classitk_1_1MeanSquaresPointSetToImageMetric.html
>
> and the framework
>
> http://www.itk.org/Insight/Doxygen/html/ 
> classitk_1_1PointSetToImageRegistrationMethod.html
>
> The rest of registration components are shared with
> the ImageToImage registration framework, that is,
> the optimizers, interpolators and transforms.
>
>
> SpatialObject could also be used for this purpose if what
> you have is a synthetic geometrical model of the anatomical
> structure.  However, if you already have a PointSet, then
> the classes above are the more direct path.
>
> You will find useful to look at the tests:
>
> Insight/Testing/Code/Algoritms/
>       itkMeanSquaresPointSetToImageMetricTest.cxx
>       itkNormalizedCorrelationPointSetToImageMetricTest.cxx
>       itkPointSetToImageRegistrationTest_1.cxx
>
>
>
>   Please let us know if you have further questions,
>
>
>
>     Thanks
>
>
>       Luis
>
>
> ------------------------------
> N.E. Mackenzie Mackay wrote:
>
>> I wish to rigidly register a set of points that defines the contour  
>> of a bone to an image of that bone in 2 dimensions.  Can itk be used  
>> to do such a registration?
>> I was wondering if ITK had a snake algorithm or a point to image  
>> filter or any other algorithm that might be used to achieve my task.
>> I have looked at section 8.14 in the user guide "model Based  
>> Registration" but am left a little confused how to create a spatial  
>> object from a set of points.
>> Neilson
>> _______________________________________________
>> Insight-users mailing list
>> Insight-users at itk.org
>> http://www.itk.org/mailman/listinfo/insight-users
>
>
>