[Insight-users] Hints to create a known deformation image - Deformable Image registration?

[Luis Ibanez]

Hi Motes,

1) Lena is certainly not the best motif for evaluating a deformable
     registration process. You may want to use a grid image with
     about four time the density of lines of the BSpline grid, and
     lines that are more than 2 pixels apart.

     The reason why you want lines to be more than 2 pixels apart
     is to avoid aliasing when you resample the image using the
     deformation field.

2) You could create such image by using GIMP

       a) Open Gimp
       b) create a new image,
       c) Select Filters --> Render--> Pattern --> Grid
       d) save the image


3)  Yes, you can make more detailed initial deformation...
       but you have to initialize all the coefficients.

       It may be desirable to generate those initial numbers
        from a program...


    Regards,


          Luis


--------------------------------------------------------------------

On Fri, Oct 30, 2009 at 2:25 PM, motes motes <mort.motes at gmail.com> wrote:
> I would like to test my BSplineDeformable registration method with a
> known deformation field. Currently I apply the BSplineWarping1.cxx
> example to the fixed image and use the output as the moving image. As
> input image I use lena:
>
> http://stochastix.files.wordpress.com/2008/07/lena-sjooblom.jpg
>
> But are there better motives that illustrate the deformation better
> (like a chess board, salt/pebber image etc)?
>
> And is it possible to create a more detailed know deformation instead
> of only changing the 8*8 deformation vectors in the text input file to
> the warper?
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.html
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.itk.org/mailman/listinfo/insight-users
>