2D/3D registration using a rotation-invariant cost function based on Zernike moments
Wolfgang Birkfellner, Xinhui Yang, Wolfgang Burgstaller, Bernard Baumann, Augustinus L. Jacob, Peter F. Niederer, Pietro Regazzoni, Peter Messmer · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2004
We present a novel in-plane rotation invariant cost function for 2D/3D registration utilizing projection-invariant transformation properties and the decomposition of the X-ray nad the DRR under comparision into orhogonal Zernike moments. As a result, only five dof have to be optimized, and the number of iteration necessary for registration can be significantly reduced. Results in a phantom study show that an accuracy of approximately 0.7° and 2 mm can be achieved using this method. We conclude that reduction of coupled dof and usage of linear independent coefficients for cost function evaluation provide intersting new perspectives for the field of 2D/3D registration.