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SIBGRAPI
2005
IEEE
14 years 29 days ago
CHF: A Scalable Topological Data Structure for Tetrahedral Meshes
Marcos Lage, Thomas Lewiner, Hélio Lopes, L...
SIBGRAPI
2005
IEEE
14 years 29 days ago
Reduction of Interband Correlation for Landsat Image Compression
We present a lossless compressor for multispectral images that exploits interband correlations. Each band is divided into blocks, to which a wavelet transform is applied. The wave...
Daniel G. Acevedo, Ana M. C. Ruedin
SIBGRAPI
2005
IEEE
14 years 29 days ago
Background Subtraction and Shadow Detection in Grayscale Video Sequences
Tracking moving objects in video sequence is an important problem in computer vision, with applications several fields, such as video surveillance and target tracking. Most techn...
Julio Cezar Silveira Jacques Jr., Cláudio R...
SIBGRAPI
2005
IEEE
14 years 29 days ago
Component-Based Adaptive Sampling
High-fidelity renderings of virtual environments is a notoriously computationally expensive task. One commonly used method to alleviate the costs is to adaptively sample the rend...
Kurt Debattista, Alan Chalmers
SIBGRAPI
2005
IEEE
14 years 29 days ago
Analytic Antialiasing for Selective High Fidelity Rendering
Images rendered using global illumination algorithms are considered amongst the most realistic in 3D computer graphics. However, this high fidelity comes at a significant comput...
Peter Longhurst, Kurt Debattista, Richard Gillibra...
SIBGRAPI
2005
IEEE
14 years 29 days ago
Automatic Iris Segmentation Using Active Near Infra Red Lighting
Carlos Hitoshi Morimoto, Thiago T. Santos, Adriano...
SIBGRAPI
2005
IEEE
14 years 29 days ago
Simple Adaptive Mosaic Effects
We present an algorithm that creates a mosaic effect for an image in an adaptive and automatic fashion. The algorithm is automatic because it does not need user intervention, exce...
Geisa Martins Faustino, Luiz Henrique de Figueired...
SIBGRAPI
2005
IEEE
14 years 29 days ago
Particle Filter-Based Predictive Tracking for Robust Fish Counting
In this paper we study the use of computer vision techniques for for underwater visual tracking and counting of fishes in vivo. The methodology is based on the application of a B...
Erikson F. Morais, Mario Fernando Montenegro Campo...