Deformable Registration with the SIFT points

SIFT points are the features point whose proprities are invariant in scaling, in the change of light, or rotation.

The principal idea of this method is use the correspondance between the points to determiner the transformation, the displacement of point. Then those points are considered as the control points that influence the form of the moving image in the deformation.

Some deformation demons methods

One of the most used recently method for the deformable registration is demons method. In this article, I show some results of using demons method implemented in the Itk 4.0.

Demons : a non-rigid deformable registration

Demons is a method of non-rigid deformable registration.

The basic idea of Demons is to use the sum of square difference (SSD) of intensity for deforming image. Demons uses optical flow to calculate forces on the each point of image. The force proposed by Thirion corresponds to a second order gradient descent on SSD criterion.

Test deformation with ITK v4.0rc02.

The imaging registration is an important step in the medical imaging. In there, the deformable registration is a difficult subject. In this article, I show some results of deformable registration implemented in the Itk 4.0.