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- Vladislav Kraevoy, Alla Sheffer
- ACM Trans. Graph.
- 2004

Many geometry processing applications, such as morphing, shape blending, transfer of texture or material properties, and fitting template meshes to scan data, require a bijective mapping between two or more models. This mapping, or <i>cross-parameterization</i>, typically needs to preserve the shape and features of the parameterized models, mapping legs to… (More)

- Nicolas Ray, Wan-Chiu Li, Bruno Lévy, Alla Sheffer, Pierre Alliez
- ACM Trans. Graph.
- 2006

We present a new globally smooth parameterization method for the triangulated surfaces of arbitrary topology. Given two orthogonal piecewise linear vector fields defined over the input mesh (typically the estimated principal curvature directions), our method computes two piecewise linear periodic functions, aligned with the input vector fields, by… (More)

- Alla Sheffer, Bruno Lévy, Maxim Mogilnitsky, Alexander Bogomyakov
- ACM Trans. Graph.
- 2005

Conformal parameterization of mesh models has numerous applicationsin geometry processing. Conformality is desirable for remeshing,surface reconstruction, and many other mesh processingapplications. Subject to the conformality requirement, theseapplications typically benefit from parameterizations with smallerstretch. The Angle Based Flattening (ABF)… (More)

- Derek Bradley, Wolfgang Heidrich, Tiberiu Popa, Alla Sheffer
- ACM Trans. Graph.
- 2010

We introduce a purely passive facial capture approach that uses only an array of video cameras, but requires no template facial geometry, no special makeup or markers, and no active lighting. We obtain initial geometry using multi-view stereo, and then use a novel approach for automatically tracking texture detail across the frames. As a result, we obtain a… (More)

- Craig Gotsman, Xianfeng Gu, Alla Sheffer
- ACM Trans. Graph.
- 2003

Parameterization of 3D mesh data is important for many graphics applications, in particular for texture mapping, remeshing and morphing. Closed manifold genus-0 meshes are topologically equivalent to a sphere, hence this is the natural parameter domain for them. Parameterizing a triangle mesh onto the sphere means assigning a 3D position on the unit sphere… (More)

- Vladislav Kraevoy, Alla Sheffer, Craig Gotsman
- ACM Trans. Graph.
- 2003

Texture mapping enhances the visual realism of 3D models by adding fine details. To achieve the best results, it is often necessary to force a correspondence between some of the details of the texture and the features of the model.The most common method for mapping texture onto 3D meshes is to use a planar parameterization of the mesh. This, however, does… (More)

- Alla Sheffer, Vladislav Kraevoy
- Proceedings. 2nd International Symposium on 3D…
- 2004

Many model editing operations, such as morphing, blending, and shape deformation requires the ability to interactively transform the surface of a model in response to some control mechanism. For most computer graphics applications, it is important to preserve the local shape properties of input models during editing operations. We introduce the mesh editing… (More)

- Alla Sheffer, Eric de Sturler
- Engineering with Computers
- 2001

We propose a new method to compute planar triangulations of faceted surfaces for surface parameterization. In contrast to previous approaches that define the flattening problem as a mapping of the three-dimensional node locations to the plane, our method defines the flattening problem as a constrained optimization problem in terms of angles (only). After… (More)

- Hao Zhang, Alla Sheffer, Daniel Cohen-Or, Quan Zhou, Oliver van Kaick, Andrea Tagliasacchi
- Comput. Graph. Forum
- 2008

Non-rigid 3D shape correspondence is a fundamental and difficult problem. Most applications which require a correspondence rely on manually selected markers. Without user assistance, the performances of existing automatic correspondence methods depend strongly on a good initial shape alignment or shape prior, and they generally do not tolerate large shape… (More)

- Shadi Saba, Irad Yavneh, Craig Gotsman, Alla Sheffer
- International Conference on Shape Modeling and…
- 2005

Gotsman et al. (SIGGRAPH 2003) presented the first method to generate a provably bijective parameterization of a closed genus-0 manifold mesh to the unit sphere. This involves the solution of a large system of non-linear equations. However, they did not show how to solve these equations efficiently, so, while theoretically sound, the method has remained… (More)