Hélio Lopes

Marcos Lage, Hélio Lopes, Marcio da S. Carvalho: Flows with suspended and floating particles. J. Comput. Physics 230(20): 7736-7754 (2011)

Thomas Lewiner, Hélio Lopes, Esdras Medeiros, Geovan Tavares, Luiz Velho: Topological mesh operators. Computer Aided Geometric Design 27(1): 1-22 (2010)

Thomas Lewiner, Vinícius Mello, Adelailson Peixoto, Sinésio Pesco, Hélio Lopes: Fast Generation of Pointerless Octree Duals. Comput. Graph. Forum 29(5): 1661-1669 (2010)

Fabiano Petronetto, Afonso Paiva, Marcos Lage, Geovan Tavares, Hélio Lopes, Thomas Lewiner: Meshless Helmholtz-Hodge Decomposition. IEEE Trans. Vis. Comput. Graph. 16(2): 338-349 (2010)

Renata Nascimento, João Paixão, Hélio Lopes, Thomas Lewiner: Topology Aware Vector Field Denoising. SIBGRAPI 2010: 103-109

Thomas Lewiner, Thales Vieira, Alex Laier Bordignon, Allyson Cabral, Clarissa Marques, João Paixão, Lis Custódio, Marcos Lage, Maria Andrade, Renata Nascimento, Scarlett de Botton, Sinésio Pesco, Hélio Lopes, Vinícius Mello, Adelailson Peixoto, Dimas Martínez Morera: Tuning Manifold Harmonics Filters. SIBGRAPI 2010: 110-117

Thales Vieira, Alex Laier Bordignon, Adelailson Peixoto, Geovan Tavares, Hélio Lopes, Luiz Velho, Thomas Lewiner: Learning good views through intelligent galleries. Comput. Graph. Forum 28(2): 717-726 (2009)

Esdras Medeiros, Luiz Velho, Hélio Lopes, Thomas Lewiner: On 2D solid α-complexes of Poisson Disc Samplings. International Journal of Shape Modeling 15(1-2): 77-91 (2009)

Marcos Lage, Rener Castro, Fabiano Petronetto, Alex Laier Bordignon, Geovan Tavares, Thomas Lewiner, Hélio Lopes: Support Vectors Learning for Vector Field Reconstruction. SIBGRAPI 2009: 104-111

João Paixão, Marcos Lage, Fabiano Petronetto, Alex Laier Bordignon, Sinésio Pesco, Geovan Tavares, Thomas Lewiner, Hélio Lopes: Random Walks for Vector Field Denoising. SIBGRAPI 2009: 112-119

Rener Castro, Thomas Lewiner, Hélio Lopes, Geovan Tavares, Alex Laier Bordignon: Statistical optimization of octree searches. Comput. Graph. Forum 27(6): 1557-1566 (2008)

Marcos Lage, Alex Laier Bordignon, Fabiano Petronetto, Alvaro Veiga, Geovan Tavares, Thomas Lewiner, Hélio Lopes: Approximations by Smooth Transitions in Binary Space Partitions. SIBGRAPI 2008: 230-236

Boris Mederos, M. Laje, S. Arouca, Fabiano Petronetto, Luiz Velho, Thomas Lewiner, Hélio Lopes: Regularized Implicit Surface Reconstruction from Points and Normals. J. Braz. Comp. Soc. 13(4): 7-16 (2007)

Thomas Lewiner, Marcos Craizer, Hélio Lopes, Sinésio Pesco, Luiz Velho, Esdras Soares de Medeiros Filho: GEncode: Geometry-driven compression for General Meshes. Comput. Graph. Forum 25(4): 685-695 (2006)

Thomas Lewiner, Hélio Lopes, Luiz Velho, Vinícius Mello: Extraction and compression of hierarchical isocontours from image data. Comp. Med. Imag. and Graph. 30(4): 231-242 (2006)

Afonso Paiva, Hélio Lopes, Thomas Lewiner, Luiz Henrique de Figueiredo: Robust adaptive meshes for implicit surfaces. SIBGRAPI 2006: 205-212

Alex Laier Bordignon, Thomas Lewiner, Hélio Lopes, Geovan Tavares, Rener Castro: Point set compression through BSP quantization. SIBGRAPI 2006: 229-238

Alex Laier Bordignon, Rener Castro, Hélio Lopes, Thomas Lewiner, Geovan Tavares: Exploratory visualization based on multidimensional transfer functions and star coordinates. SIBGRAPI 2006: 273-280

Marcos Lage, Fabiano Petronetto, Afonso Paiva, Hélio Lopes, Thomas Lewiner, Geovan Tavares: Vector field reconstruction from sparse samples with applications. SIBGRAPI 2006: 297-306

Thomas Lewiner, João D. Gomes Jr., Hélio Lopes, Marcos Craizer: Curvature and torsion estimators based on parametric curve fitting. Computers & Graphics 29(5): 641-655 (2005)

Rosane Minghim, Haim Levkowitz, Luis Gustavo Nonato, Lionis Watanabe, Veridiana Christie Lucas Salvador, Hélio Lopes, Sinésio Pesco, Geovan Tavares: Spider Cursor: a simple versatile interaction tool for data visualization and exploration. GRAPHITE 2005: 307-313

Thomas Lewiner, Marcos Craizer, Hélio Lopes, Sinésio Pesco, Luiz Velho, Esdras Soares de Medeiros Filho: GEncode: Geometry-Driven Compression in Arbitrary Dimension and Co-Dimension. SIBGRAPI 2005: 249-256

Marcos Lage, Thomas Lewiner, Hélio Lopes, Luiz Velho: CHF: A Scalable Topological Data Structure for Tetrahedral Meshes. SIBGRAPI 2005: 349-356

Sinésio Pesco, Geovan Tavares, Hélio Lopes: A stratification approach for modeling two-dimensional cell complexes. Computers & Graphics 28(2): 235-247 (2004)

Antônio Wilson Vieira, Thomas Lewiner, Luiz Velho, Hélio Lopes, Geovan Tavares: Stellar Mesh Simplification Using Probabilistic Optimization. Comput. Graph. Forum 23(4): 825-838 (2004)

Thomas Lewiner, Hélio Lopes, Geovan Tavares: Applications of Forman's Discrete Morse Theory to Topology Visualization and Mesh Compression. IEEE Trans. Vis. Comput. Graph. 10(5): 499-508 (2004)

Thomas Lewiner, Hélio Lopes, Jarek Rossignac, Antônio Wilson Vieira: Efficient Edgebreaker for Surfaces of Arbitrary Topology. SIBGRAPI 2004: 218-225

Thomas Lewiner, Luiz Velho, Hélio Lopes, Vinícius Mello: Hierarchical Isocontours Extraction and Compression. SIBGRAPI 2004: 234-241

Thomas Lewiner, João D. Gomes Jr., Hélio Lopes, Marcos Craizer: Arc-Length Based Curvature Estimator. SIBGRAPI 2004: 250-257

Esdras Soares de Medeiros Filho, Luiz Velho, Hélio Lopes: Restricted BPA: Applying Ball-Pivoting on the Plane. SIBGRAPI 2004: 372-379

Thomas Lewiner, Luiz Velho, Hélio Lopes, Vinícius Mello: Simplicial Isosurface Compression. VMV 2004: 299-306

Hélio Lopes, Jarek Rossignac, Alla Safonova, Andrzej Szymczak, Geovan Tavares: Edgebreaker: a simple implementation for surfaces with handles. Computers & Graphics 27(4): 553-567 (2003)

Thomas Lewiner, Hélio Lopes, Geovan Tavares: Optimal discrete Morse functions for 2-manifolds. Comput. Geom. 26(3): 221-233 (2003)

Thomas Lewiner, Hélio Lopes, Geovan Tavares: Toward Optimality in Discrete Morse Theory. Experimental Mathematics 12(3): 271-285 (2003)

Hélio Lopes, Sinésio Pesco, Geovan Tavares, M. Maia, A. Xavier: Handlebody Representation for Surfaces and Its Applications to Terrain Modeling. International Journal of Shape Modeling 9(1): 61-77 (2003)

Thomas Lewiner, Hélio Lopes, Antônio Wilson Vieira, Geovan Tavares: Efficient Implementation of Marching Cubes' Cases with Topological Guarantees. J. Graphics, GPU, & Game Tools 8(2): 1-15 (2003)

Antônio Wilson Vieira, Luiz Velho, Hélio Lopes, Geovan Tavares, Thomas Lewiner: Fast Stellar Mesh Simplification. SIBGRAPI 2003: 27-34

Esdras Soares de Medeiros Filho, Luiz Velho, Hélio Lopes: A Topological Framework for Advancing Front Triangulation. SIBGRAPI 2003: 45-51

Hélio Lopes, João Batista S. de Oliveira, Luiz Henrique de Figueiredo: Robust adaptive polygonal approximation of implicit curves. Computers & Graphics 26(6): 841-852 (2002)

Hélio Lopes, Geovan Tavares, Jarek Rossignac, Andrzej Szymczak, Alla Safonova: Edgebreaker: a simple compression for surfaces with handles. Symposium on Solid Modeling and Applications 2002: 289-296

M. Maia, A. Xavier, Hélio Lopes, Sinésio Pesco, Geovan Tavares: Extraction of Terrain Data from Digitised Contours. International Journal of Shape Modeling 7(1): 59-74 (2001)

Hélio Lopes, João Batista S. de Oliveira, Luiz Henrique de Figueiredo: Robust Adaptive Approximation of Implicit Curves. SIBGRAPI 2001: 10-17

Hélio Lopes, Geovan Tavares: Structural Operators for Modeling 3-Manifolds. Symposium on Solid Modeling and Applications 1997: 10-18