@CONFERENCE\{IMM2008-06174,
    author       = "S. Darkner and M. Vester-Christensen and R. Paulsen and R. Larsen",
    title        = "Non-rigid registration of {2D} manifolds in {3D} Euclidian space",
    year         = "2008",
    pages        = "69142R-6914",
    booktitle    = "Proceedings of the {SPIE,} Medical Imaging Conference",
    volume       = "6914",
    series       = "",
    editor       = "Reinhardt, Joseph M.; Pluim, Josien P. W",
    publisher    = "",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/6174-full.html",
    abstract     = "This work describes a non-rigid registration method for open {2D} manifold embedded in {3D} Euclidian space. The method is based on difference of distance maps and grid based warps interpolated by splines constrained in such a way that the deformation field is diffeomorphic. We then create a dense surface to surface correspondence using angle weighted normals and ray tracing. The implementation using a derivation of the inverse compositional algorithm for optimization of computational speed is described. The results are evaluated as a shape model showing the principal modes of variation."
}