SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
Abstract. This paper describes an algorithm for generating unstructured triangulations for arbitrarily shaped twodimensional regions. The algorithm works for regions without cracks...
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
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...
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
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...
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
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...
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
Visualization systems that support multiple-display viewing can greatly enhance user perception. The common approach to provide multiple synchronized views uses a powerful centrali...
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
Texture analysis and synthesis is very important for computer graphics, vision, and image processing. This paper describes an algorithm which can produce new textures with a matchi...
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
This paper describes a real-time shadow generation algorithm for polygonal environments illuminated by movable point light sources. The main goal is to quickly reduce the number o...
SIBGRAPI
1999
IEEE
14 years 3 months ago
1999
IEEE
Many scientific applications use scattered data originated from samples. Interpolation techniques are necessary to estimate the values on non-sampled regions. In a previous work, t...