
handle: 10784/27666 , 10784/29503 , 10784/9698
Hessian Locally Linear Embedding (HLLE) is an algorithm that computes the nullspace of a Hessian functional H for Dimensionality Reduction (DR) of a sampled manifold M. This article presents a variation of classic HLLE for parameterization of 3D triangular meshes. Contrary to classic HLLE which estimates local Hessian nullspaces, the proposed approach follows intuitive ideas from Differential Geometry where the local Hessian is estimated by quadratic interpolation and a partition of unity is used to join all neighborhoods. In addition, local average triangle normals are used to estimate the tangent plane TxM at x 2 M instead of PCA, resulting in local parameterizations which reflect better the geometry of the surface and perform better when the mesh presents sharp features. A high frequency dataset (Brain) is used to test our algorithm resulting in a higher rate of success (96:63%) compared to classic HLLE (76:4%).
Eigenvalues and eigenfunctions, Parametrizaciones, Interpolation spaces, Matriz Hessiana, Mesh generation, Geometry, Parameterization, Geometry, differential, Dimensionality reduction, Reducción de dimensionalidad, ESPACIOS DE INTERPOLACIÓN, Manifolds (Mathematics), Manifold learning, Computer graphics, FUNCIONES VECTORIALES, Statistical tests, Hessian locally linear embedding, Computer vision, Differential geometry, Mesh parameterization, GEOMETRÍA DIFERENCIAL, Algorithms, VARIEDADES (MATEMÁTICAS)
Eigenvalues and eigenfunctions, Parametrizaciones, Interpolation spaces, Matriz Hessiana, Mesh generation, Geometry, Parameterization, Geometry, differential, Dimensionality reduction, Reducción de dimensionalidad, ESPACIOS DE INTERPOLACIÓN, Manifolds (Mathematics), Manifold learning, Computer graphics, FUNCIONES VECTORIALES, Statistical tests, Hessian locally linear embedding, Computer vision, Differential geometry, Mesh parameterization, GEOMETRÍA DIFERENCIAL, Algorithms, VARIEDADES (MATEMÁTICAS)
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