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SIBGRAPI
2008
IEEE
13 years 12 months ago
An Automatic Crude Registration of Two Partially Overlapping Range Images
We present a crude registration algorithm for two partially overlapping range images acquired from a rigid object. Our proposal is characterized by two novel features: drastic dat...
Mercedes Rocío Gonzales Márquez, Shi...
SIBGRAPI
2008
IEEE
13 years 12 months ago
Crop Type Recognition Based on Hidden Markov Models of Plant Phenology
This work introduces a Hidden Markov Model (HMM) based technique to classify agricultural crops. The method recognizes different crops by analyzing their spectral profiles over a ...
P. B. C. Leite, Raul Queiroz Feitosa, A. R. Formag...
SIBGRAPI
2008
IEEE
13 years 12 months ago
Benchmark for Quantitative Evaluation of Assisted Object Segmentation Methods to Image Sequences
Evaluation of segmentation methods applied to image sequences consists in the analysis of such methods according to quantitative and/or qualitative criteria, usually driven to som...
Franklin César Flores, Roberto de Alencar L...
SIBGRAPI
2008
IEEE
13 years 12 months ago
Matching Photometric Observation Vectors with Shadows and Variable Albedo
We describe a procedure to solve the basic problem of Variable Lighting Photometric Stereo – namely, recovering the normal directions and intrinsic albedos at all visible points...
Helena Cristina da Gama Leitão, Rafael Feli...
SIBGRAPI
2008
IEEE
13 years 12 months ago
Structural Matching of 2D Electrophoresis Gels using Graph Models
2D electrophoresis is a well known method for protein separation which is extremely useful in the field of proteomics. Each spot in the image represents a protein accumulation an...
Alexandre Noma, Alvaro Pardo, Roberto Marcondes Ce...
SIBGRAPI
2008
IEEE
13 years 12 months ago
Tradeoffs in Approximate Range Searching Made Simpler
Range searching is a fundamental problem in computational geometry. The problem involves preprocessing a set of n points in Rd into a data structure, so that it is possible to det...
Sunil Arya, Guilherme Dias da Fonseca, David M. Mo...
SIBGRAPI
2008
IEEE
13 years 12 months ago
Using Multi-agent Systems for Sampling and Rendering Implicit Surfaces
In this paper a Multi-Agent System for Sampling and Rendering Implicit Surfaces is presented (MASSRIS). Previous approaches to pen-and-ink style renderings of implicit surfaces we...
Pauline Jepp, Jörg Denzinger, Brian Wyvill, M...
SIBGRAPI
2008
IEEE
13 years 12 months ago
Shape Aware Deformation Using a Skeleton-Guided Scheme
Alvaro Cuno, Claudio Esperança, Antonio A. ...
SIBGRAPI
2008
IEEE
13 years 12 months ago
Simulation and Rendering of Opus Palladium 3D Mosaics
Mosaic sculptures are a form of art where the sculpture is made from a collection of individual elements called tiles which are distributed over the surface of a given 3D shape. T...
Vladimir Alves dos Passos, Marcelo Walter
SIBGRAPI
2008
IEEE
13 years 12 months ago
Projective Estimators for Point/Tangent Representations of Planar Curves
Recognizing shapes in multiview imaging is still a challenging task, which usually relies on geometrical invariants estimations. However, very few geometric estimators that are pro...
Thomas Lewiner, Marcos Craizer