Browsing by Author "Tannenbaum, Allen"
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Item Affine invariant edge maps and active contours(1995-08) Olver, P.J.; Sapiro, Guillermo; Tannenbaum, AllenItem Conformal surface parameterization for texture mapping(1999-04) Haker, Steven; Angenent, Sigurd; Tannenbaum, Allen; Kikinis, Ron; Sapiro, Guillermo; Halle, MichaelItem Length-based attacks for certain group based encryption rewriting systems(2000-04) Hughes, James; Tannenbaum, AllenItem A method for denoising textured surfaces(2001-04) Betelu, Santiago; Tannenbaum, Allen; Sapiro, GuillermoIn this note, we present a simple method to denoise triangulated and implicit surfaces in a manner which preserves the 3D shape texture. The technique is based upon the synthesis of partial differential equations (PDE's), implicit surfaces, and Wiener filtering. The basic idea is to apply a computationally efficient local Wiener filter to an implicit representation of the surface. Such a representation can be directly given as the algorithm input or explicitly obtained via partial differential equation based implicitation techniques applied to the triangulated data. The proposed method has a computational complexity O(N log N).Item Noise-resistant affine skeletons of planar curves(1999-12) Betelu, Santiago; Sapiro, Guillermo; Tannenbaum, Allen; Giblin, Peter J.Item Optical Flow: A Curve Evolution Approach(Institute of Electrical and Electronic Engineers, 1996-04) Kumar, Arun; Tannenbaum, Allen; Balas, Gary J.A novel approach for the computation of optical flow based on an L1 type minimization is presented. It is shown that the approach has inherent advantages since it does not smooth the flow-velocity across the edges and hence preserves edge information. A numerical approach based on computation of evolving curves is proposed for computing the optical flow field. Computations are carried out on a number of real image sequences in order to illustrate the theory as well as the numerical approach.Item Phase transitions curve evolution, and the control of semiconductor manufacturing processes(1997-02) Berg, Jordan M.; Yezzi, A.; Tannenbaum, AllenItem Statistical analysis of RNA backbone(2004-06) Hershkovitz, Eli; Sapiro, Guillermo; Tannenbaum, Allen; Williams, Loren DeanItem Statistical analysis of RNA backbone(2004-02) Sapiro, Guillermo; Hershkovitz, Eli; Tannenbaum, Allen; Williams, Loren Dean