Sciweavers

SIBGRAPI
2003
IEEE
14 years 20 days ago
A Non-Self-Intersection Douglas-Peucker Algorithm
The classical Douglas-Peucker line-simplification algorithm is recognized as the one that delivers the best perceptual representations of the original lines. It is used extensivel...
Shin-Ting Wu, Mercedes Rocío Gonzales M&aac...
SIBGRAPI
2003
IEEE
14 years 20 days ago
Creating and Editing Curves on Subdivision Surfaces
Jörn Loviscach, Henning Thöle
SIBGRAPI
2003
IEEE
14 years 20 days ago
Image Feature Extraction for Application of Biometric Identification of Iris - A Morphological Approach
This paper presents a new approach based on morphological operators for application of biometric identification of individuals by segmentation and analysis of the iris. Algorithms ...
Joaquim de Mira Jr., Joceli Mayer
SIBGRAPI
2003
IEEE
14 years 20 days ago
Helical CT Reconstruction from Wide Cone-Beam Angle Data Using ART
We report on new results on the use of Algebraic Reconstruction Techniques (ART) for reconstructing from helical cone-beam Computerized Tomography (CT) data. We investigate two va...
Bruno M. Carvalho, Gabor T. Herman
SIBGRAPI
2003
IEEE
14 years 20 days ago
A Sketch-Based Collaborative Design System
We present a system for collaborative conceptual design that allows users potentially located in geographically distant areas to cooperate by sketching, exploring and modifying the...
Zhe Fan, Ma Chi, Manuel M. Oliveira
SIBGRAPI
2003
IEEE
14 years 20 days ago
Secure Authentication Watermarking for Binary Images
Abstract. Authentication watermarking is a hidden data inserted into an image, in order to detect any alterations. It seems to be almost impossible to design a really secure authen...
Hae Yong Kim, Amir Afif
SIBGRAPI
2003
IEEE
14 years 20 days ago
Learning-Based versus Model-Based Log-Polar Feature Extraction Operators: A Comparative Study
In this paper, we compare two distinct primal sketch feature extraction operators: one based on neural network feature learning and the other based on mathematical models of the f...
Herman Martins Gomes, Robert B. Fisher
PVG
2003
IEEE
165views Visualization» more  PVG 2003»
14 years 20 days ago
A PC Cluster System for Simultaneous Interactive Volumetric Modeling and Visualization
A number of problems are well suited for volumetric representation for both simulation and storage, however, the large amount of data that needs to be processed and rendered with ...
Shigeru Muraki, Eric B. Lum, Kwan-Liu Ma, Masato O...
DCC
2003
IEEE
14 years 21 days ago
Universal Multiple Description Scalar Quantization: Analysis and Design
—This paper introduces a new high-rate analysis of the multiple description scalar quantizer (MDSQ) with balanced descriptions. The analysis provides insight into the structure o...
Chao Tian, Sheila S. Hemami