Chair for Computer Aided Medical Procedures & Augmented Reality
Lehrstuhl für Informatikanwendungen in der Medizin & Augmented Reality

F. Brunet, A. Bartoli, N. Navab, R. Malgouyres
British Machine Vision Conference (BMVC), London (UK), September 7-10, 2009 (bib)

Standard Free-Form Deformation (FFD) models built upon tensor-product B-Splines have been proved useful to model the warp between two views of a deformable scene. In this paper, we show that the standard FFD is in fact the affine projection of a threedimensional surface represented by a tensor-product B-Spline. We construct a new tensor-product warp relying on Non-Uniform Cubic B-Spline: the NURBS-Warp. We show that this new warp is an extension of the standard FFD that describes the perspective camera model. We propose algorithms that compute the parameters of a NURBS-Warp from point correspondences. Our NURBS-Warps are compared to standard FFD warps for both synthetic and real images. These experiments show that our NURBS-Warp gives better results than the other approaches, especially when the perspective effects are important.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each authors copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

Edit | Attach | Refresh | Diffs | More | Revision r1.13 - 30 Jan 2019 - 15:16 - LeslieCasas

Lehrstuhl für Computer Aided Medical Procedures & Augmented Reality    rss.gif