Browsing Ibero-American Symposium on Computer Graphics by Issue Date
Now showing items 1-20 of 23
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Adaptive trimming of cubic triangular Bézier patches
(The Eurographics Association, 2006)We present a method to handle cubic trimmed triangular Bézier patches. This scheme makes use of levels of detail and surface subdivision to achieve a fast and flexible hierarchical data structure that is specially useful ... -
Automatic architectural 3D model generation with sunlight simulation
(The Eurographics Association, 2006)Nowadays, 2D architectural design is provided with many good tools. But it lacks efficient tools that could help designers in early stages of a project for tasks such as virtual prototyping or 3D model simulation. The 3D ... -
Coherent Hierarchical Level-of-Detail (HLOD) Refinement Through Hardware Occlusion Queries
(The Eurographics Association, 2006)We present a coherent hierarchical level of detail (HLOD) culling algorithm that employs a novel metric to perform the refinement of a HLOD-based system that takes into account visibility information. The information is ... -
Perceived Quality of Simplified Polygonal Meshes: Evaluation using Observer Studies
(The Eurographics Association, 2006)The complexity of a polygonal mesh model is usually reduced by applying a simplification method, resulting in a similar mesh having less vertices and faces. Although several such methods have been developed, it is not yet ... -
Kit Assembly Helper in Augmented Reality
(The Eurographics Association, 2006)This paper describes an augmented reality application that aids users in assembling an object originally in a kit format, i.e. the object is received unassembled, with ordered instructions steps on how to connect each ... -
Skin Detection for Hand Gesture Interfaces using Assimilative Background
(The Eurographics Association, 2006)This paper describes the study realized about hand movement capture systems oriented to gesture interfaces. Thanks to this study we have developed a skin colour based hand detection application. The state of the art already ... -
Perception-based painterly rendering: functionality and interface design
(The Eurographics Association, 2006)Painterly rendering (non-photorealistic rendering or NPR) aims at translating photographs into paintings with discrete brush strokes, simulating certain techniques (im- or expressionism) and media (oil or watercolour). ... -
Grid Architecture for Distributed Rendering
(The Eurographics Association, 2006)Rendering is the process by means of which a raster 2D image can be obtained from the definition of a 3D scene. This process is computationally intensive and requires a lot of time to be done when the source scene has ... -
Transferring Facial Expressions to Different Face Models
(The Eurographics Association, 2006)We introduce a facial deformation system that helps the character setup process and gives artists the possibility to manipulate models as if they were using a puppet. The method uses a set of labels that define specific ... -
Individualizing the New Interfaces: Extraction of User's Emotions from Facial Data
(The Eurographics Association, 2006)When developing new multimodal user interfaces emotional user information may be of great interest. In this paper we present a simple and computationally feasible method to perform automatic emotional classification of ... -
Efficient focus+context visual exploration of volume datasets
(The Eurographics Association, 2006)We propose a hierarchical representation of volume data sets based on a user-given definition of features. The model is general and it can be used for various types of feature definitions such as rendering queries, topological ... -
GPU-based Evaluation of Boolean Operations on Triangulated Solids
(The Eurographics Association, 2006)This paper presents a robust method for evaluating boolean operations on triangle meshes. It is based on a fast and reliable point-in-solid algorithm that works with B-Rep representations. With this method, several boolean ... -
It's all in the Face: Studies on Monitoring Users' Experience
(The Eurographics Association, 2006)We propose to observe users spontaneous facial expressions as a method to identify adverse-event occurrences at the user interface level. We discuss an experiment designed to investigate the association between incidents ... -
Recognizing Hand Gestures with CALI
(The Eurographics Association, 2006)Human computer interaction techniques that do not rely on devices are often perceived as more natural by users. Many of these, include hand pose recognition as an interaction technique appealing to users. In this paper we ... -
Boolean Operations in Open-Source Blender Project
(The Eurographics Association, 2006)This paper describes the work of a new implementation of the Boolean operations of Blender. Blender is a modelling and animation 3D software with GNU General Public License (GPL). Boolean operations are a useful tool for ... -
Augmented Reality Assistance in Forest Fire Fighting
(The Eurographics Association, 2006)Forest fire fighting is unfortunately a very important activity for many fire departments. A forest fire is always a very complex situation to manage, in which lots of ground teams and aircraft have to cooperate in order ... -
Efficient Conservative Collision Detection for Populated Virtual Worlds
(The Eurographics Association, 2006)Large virtual worlds, with considerable level of detail are starting to emerge everywhere, from large areas of actual cities to archaeological detailed reconstructions of sites. Populating a virtual world adds an extra ... -
Magic in Augmented Reality
(The Eurographics Association, 2006)In this paper we suggest a new approach for playing the "Magic The Gathering" game. This approach allows the user to perform a set of game moves within this popular card game using a Tangible Augmented Reality (AR) ... -
A Mesh-Particle Model for Fluid Animation
(The Eurographics Association, 2006)We use our adapted versions of the two most used methods in Computer Fluid Animation, Marker and Cell and Smoothed Particle Hydrodynamics, to develop a new method taking advantage of the calculation speed of the first and ... -
ArTbitrating JaVox: Evolution Applied to Visual and Sound Composition
(The Eurographics Association, 2006)ArTbitrariness is presented here as an initiative of upgrading the esthetical judgment through interactive evolutionary computation techniques and other population based techniques. Computational creativity will be approached, ...