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SIBGRAPI
1999
IEEE
13 years 10 months ago
Developing Morphological Building Blocks: From Design to Implementation
Abstract. Mathematical morphology has become a widely used technique for image processing and computer vision. Initially designed as a set theory, it was generalized to the set of ...
Marcos Cordeiro d'Ornellas, Rein van den Boomgaard
SIBGRAPI
1999
IEEE
13 years 10 months ago
Piecewise Trilinear Deformation of Tomographic Models
: In this work we introduce an iterative method that deforms brain models built from tomographic images. The deformation is used for normalization purposes: individual models are d...
Sílvio de Barros Melo
SIBGRAPI
1999
IEEE
13 years 10 months ago
Speckle Noise MAP Filtering Based on Local Adaptive Neighborhood Statistics
This work proposes the use of an adaptive neighborhood procedure to extract local statistical properties of images in order to improve a speckle noise "Maximum a Posteriori &q...
Fátima N. S. de Medeiros, Nelson D. A. Masc...
SIBGRAPI
1999
IEEE
13 years 10 months ago
Curvature Operators in Geometric Image Processing
Abstract. In this work we study the problem of reconstructing an image from a perceptual segmentation based on a geometric classification of its points using non-linear curvature f...
Cicero Mota, Jonas Gomes
SIBGRAPI
1999
IEEE
13 years 10 months ago
Keeping an Eye for HCI
Advanced Human Computer Interaction (HCI) techniques are required to enhance current computer interfaces. In this paper we present an eye gaze tracking system based on a robust low...
Carlos Hitoshi Morimoto, David Koons, Arnon Amir, ...
SIBGRAPI
1999
IEEE
13 years 10 months ago
Parallelizing MPEG Video Encoding using Multiprocessors
Many computer applications are currently using digital video. Recent advances in digital imaging and faster networking infrastructure made this technology very popular, not only fo...
Joao Paulo Kitajima, Denilson Barbosa, Wagner Meir...
SIBGRAPI
1999
IEEE
13 years 10 months ago
An Algorithm for Two-Dimensional Mesh Generation for Arbitrary Regions with Cracks
Abstract. This paper describes an algorithm for generating unstructured triangulations for arbitrarily shaped twodimensional regions. The algorithm works for regions without cracks...
Antonio C. O. Miranda, Joaquim B. Cavalcante Neto,...
SIBGRAPI
1999
IEEE
13 years 10 months ago
Interval Methods for Ray Casting Implicit Surfaces with Affine Arithmetic
We study the performance of affine arithmetic as a replacement for interval arithmetic in interval methods for ray casting implicit surfaces. Affine arithmetic is a variant of inte...
Affonso de Cusatis Junior, Luiz Henrique de Figuei...
SIBGRAPI
1999
IEEE
13 years 10 months ago
A Framework for Attention and Object Categorization Using a Stereo Head Robot
This work describes a framework for dealing with attention and categorization using a robot platform consisting of an articulated stereo-head with four degrees of freedom (pan, til...
Luiz M. G. Gonçalves, Antonio A. F. Oliveir...
SIBGRAPI
1999
IEEE
13 years 10 months ago
An Image Processing and Belief Network Approach to Face Detection
This work describes an approach for face detection, which is the rst stage of any fully automatedhumanface recognition system. We propose several enhancements to a feature-based ap...
Paulo Sérgio de Souza Coelho, Claudio Esper...