Fast Polygonization of Variational Implicit Surfaces (2009)
Alvaro Cuno, Claudio Esperança, Antonio Oliveira, Paulo Roma Cavalcanti
This article presents a simple hierarchical adaptation of the Marching Cubes algorithm for polygonizing variational implicit surfaces used in modelling and reconstruction applications. The technique...
M. Botsch, R. Pajarola (editors, Ricardo Marroquim, Martin Kraus, Paulo Roma Cavalcanti
Image-space reconstruction of continuous surfaces from scattered one-pixel projections of points is known to potentially offer an advantageous time complexity compared to surface splatting...
Fast Polygonization of Variational Implicit Surfaces (2008)
Alvaro Cuno, Claudio Esperança, Antonio Oliveira, Paulo Roma Cavalcanti
Abstract. This article presents a simple hierarchical adaptation of the Marching Cubes algorithm for polygonizing variational implicit surfaces used in modelling and reconstruction applications. The...
3D Free-form Modeling with Variational Surfaces (2008)
Alvaro Cuno, Claudio Esperança, Paulo Roma Cavalcanti, Ricardo Farias
We describe a free-form stroke-based modeling system where objects are primarily represented by means of variational surfaces. Although similar systems have been described in recent years, our...
UFRJ, Universidade Federal do Rio de Janeiro (2008)
Ricardo Marroquim, Paulo Roma Cavalcanti, Claudio Esperança, Luiz Velho
Abstract- This paper presents a method for generating multiresolution triangulations of non-manifold 3D objects composed of several regions with arbitrary geometry. The process of adapting the...
Ricardo Marroquim, Paulo Roma Cavalcanti, Claudio Esperanca, Luiz Velho
This paper presents a method for generating multi-resolution adaptive triangulations of non-manifold 3D objects composed of several regions with arbitrary geometry. The process rst immerses the input...
Adaptive Multi-Resolution Triangulations Based on Physical Compression (2008)
Ricardo Marroquim, Paulo Roma Cavalcanti, Claudio Esperança, Luiz Velho
This paper presents a method for generating multi-resolution adaptive triangulations of nonmanifold 3D objects composed of several regions with arbitrary geometry. The process first immerses the...
Multi-Resolution Triangulations with Adaptation to the Domain Based on Physical Compression (2008)
Ricardo Marroquim, Paulo Roma Cavalcanti, Luiz Velho, Claudio Esperança
Abstract. This paper presents a method for generating multi-resolution triangulations of non-manifold objects composed of several regions with arbitrary geometry. The process of adapting the...
Multi-Resolution Triangulations with Adaptation to the Domain Based on (2008)
Physical Compression Ricardo, Ricardo Marroquim, Paulo Roma Cavalcanti, Claudio Esperança
This paper presents a method for generating multiresolution triangulations of non-manifold objects composed of several regions with arbitrary geometry. The process of adapting the triangulation to...
A New Interface Paradigm for Motion Capture Based Animation Systems (2007)
Fernando Wagner, Luiz Velho, Paulo Roma Cavalcanti
. This paper proposes a new user interface paradigm for motion capture based animation systems, providing intuitive and efficient ways to visualize the main motion capture concepts and operations. A...
An Architecture for Motion Capture Based Animation (2007)
Fernando Wagner, Serpa Vieira Silva, Luiz Velho, Paulo Roma Cavalcanti
. This paper proposes an architecture for motion capture based animation systems, that works with several data formats and uses the building block paradigm for motion processing operations. Also, a...
Computing Arrangements Of Implicit Curves (2007)
Paulo Cezar Carvalho, Luiz Henrique, De Figueiredo, PAULO ROMA CAVALCANTI
this paper is to find, whenever possible, the exact topology determined by a set of implicit curves, without having to resort to polygonal approximations. It is important to distinguish exact...
Fernando Wagner, Da Silva, Paulo Roma Cavalcanti, Jonas Gomes
Abstract. This paper proposes an architecture for motion capture based animation systems, which works with several data formats and uses the building block paradigm for motion processing operations....
Fast Polygonization of Variational Implicit Surfaces (2004)
Alvaro Cuno Claudio, Claudio Esperança, Antonio Oliveira, Paulo Roma Cavalcanti
This article presents a simple hierarchical adaptation of the Marching Cubes algorithm for polygonizing variational implicit surfaces used in modelling and reconstruction applications. The technique...
William M. Lira, Paulo Roma Cavalcanti, Luiz F. Martha, Luiz Fernando Martha
Abstract: This paper presents a description of the reorganization of a geometric modeler, MG, designed to support new capabilities of a topological module (CGC) that allows the detection of...
William M. Lira, Paulo Roma Cavalcanti, Luiz F. Martha
This paper presents a description of the reorganization ofa geometric modeler, MG, designed to support new capabilities ofa topological module (CGC) that allows the detection of closed-off solid...
An OOP approach for mesh generation of multi-region models with NURBS (2001)
William M. Lira, Paulo Roma Cavalcanti, Luiz F. Martha
This paper presents an object-oriented approach for creating multi-region non-manifold models with NURBS. The main motivation is that geometry and shape of realistic engineering objects are...
A Point Creation Strategy for Mesh Generation Using Crystal Lattices as Templates (2000)
Ulisses T. Mello, Paulo Roma Cavalcanti
A strategy is presented to define background meshes based on crystal lattices. Crystal-based background meshes have much better initial distribution of minimum dihedral angles than regular background...
A Point Creation Strategy for Mesh Generation Using Crystal Lattices as Templates (2000)
Ulisses T. Mello, Paulo Roma Cavalcanti
A strategy is presented to define background meshes based on crystal lattices. Crystal-based background meshes have much better initial distribution of minimum dihedral angles than regular background...
Three-Dimensional Constrained Delaunay Triangulation: A Minimalist Approach. (1999)
A Minimalist Approach, Paulo Roma Cavalcanti, Ulisses T. Mello
In this paper we summarize our experiences with 3D constrained Delaunay triangulation algorithms for industrial applications. In addition, we report a robust implementation process for constructing...
Three-dimensional constrained delaunay triangulation: a minimalist approach (1999)
Paulo Roma Cavalcanti, Ulisses T. Mello
In this paper we summarize our experiences with3Dconstrained Delaunay triangulation algorithms for industrial applications. In addition, we report a robust implementation process for...
An Architecture for Motion Capture Based Animation (1998)
Fernando Wagner Da, Da Silva, Paulo Roma Cavalcanti, Jonas Gomes
This paper proposes an architecture for motion capture based animation systems, which works with several data formats and uses the building block paradigm for motion processing operations. Also, a...
Computação de superfícies mínimas discretas (1997)
João Paulo Bento, Paulo Roma Cavalcanti
There is a number of methods to compute minimal surfaces. This paper presentes a computer program that solves Plateau's problem, joining a recent iteractive method of Pinkall and Polthier with...
An architecture for motion capture based animation (1997)
Luiz Velho, Paulo Roma Cavalcanti, Jonas Gomes
This paper proposes an architecture for motion capture based animation systems, which works with several data formats and uses the building block paradigm for motion processing operations. Also, a...
Nonmanifold Modeling: An Approach Based on Spatial Subdivision (1997)
Paulo Roma Cavalcanti, Luiz Fernando Martha
This paper deals with the problem of creating and maintaining a spatial
Point in Polyhedron Testing Using Spherical Polygons (1995)
Paulo Cezar, Pinto Carvalho, Paulo Roma Cavalcanti
Introduction This gem presents a method based on spherical polygons to determine if a given point is inside or outside a three-dimensional polyhedron, given by its face list. This approach extends a...
CREATION AND MAINTENANCE OF SUBDIVISÕES OF THE SPACE (1992)
Geometric Modeling is central to many CAD systems, even though the models traditionally employed do not satisfy all applications. Scienti
CREATION AND MAINTENANCE OF SUBDIVISÕES OF THE SPACE (1992)
Geometric Modeling is central to many CAD systems, even though the models traditionally employed do not satisfy all applications. Scienti
CREATION AND MAINTENANCE OF SUBDIVISÕES OF THE SPACE (1992)
Geometric Modeling is central to many CAD systems, even though the models traditionally employed do not satisfy all applications. Scienti