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Displaying 1-20 out of 20 total
A Perceptual Data Repository for Polygonal Meshes
Found in: Visualisation, International Conference in
By Samuel Silva, Beatriz Sousa Santos, Carlos Ferreira, Joaquim Madeira
Issue Date:July 2009
pp. 207-212
A repository containing perceived quality data for polygonal meshes, obtained through observer studies, is presented. It includes information regarding the experimental methodology, protocol and models used, with the purpose of allowing researchers to use ...
 
A New Approach for 3D Craniometric Measurements Using 3D Skull Models
Found in: 2013 17th International Conference on Information Visualisation
By Paulo Dias,Daniel Santos,Danilo Souza,Helder Santos,Catarina Coelho,Maria Teresa Ferreira,Eugenia Cunha,Beatriz Sousa Santos
Issue Date:July 2013
pp. 462-467
This work presents an ongoing work on a new approach to perform craniometric analysis based on contactless 3D modelling of skulls. Beside the acquisition process with a 3D range sensor and initial results in the semi-automatic detection of features in the ...
 
Extending the H-Tree Layout Pedigree: An Evaluation
Found in: 2013 17th International Conference on Information Visualisation
By Joao Miguel Santos,Beatriz Sousa Santos,Paulo Dias,Samuel Silva,Carlos Ferreira
Issue Date:July 2013
pp. 422-427
Visualizing large family structures is becoming increasingly important, as more genealogical data becomes available. A space-filling h-tree layout pedigree has been recently proposed to make better use of the available space than traditional representation...
 
Implementation and Evaluation of an Enhanced H-tree Layout Pedigree Visualization
Found in: 2012 16th International Conference on Information Visualisation (IV)
By Joao Miguel Santos,Paulo Dias,Beatriz Sousa Santos
Issue Date:July 2012
pp. 24-29
The constant growth of available genealogical information has encouraged the research of visualization techniques capable of representing the corresponding large amount of data. An H-Tree Layout has been recently proposed to represent pedigree data as a wa...
 
Wiimote as an Input Device in Google Earth Visualization and Navigation: A User Study Comparing Two Alternatives
Found in: Information Visualisation, International Conference on
By Beatriz Sousa Santos, Bruno Prada, Hugo Ribeiro, Paulo Dias, Samuel Silva, Carlos Ferreira
Issue Date:July 2010
pp. 473-478
This paper presents a user study performed to compare the usability of the Wiimote as an input device to visualize information and navigate in Google Earth using two different configurations. This study had the collaboration of 15 participants which perfor...
 
Computer-Assisted Myocardial Perfusion Assessment
Found in: 2014 18th International Conference on Information Visualisation (IV)
By Samuel Silva,Joaquim Madeira,Beatriz Sousa Santos
Issue Date:July 2014
pp. 336-341
Left ventricle functional analysis can be performed using CTA images. In recent years it has been proposed that CTA imaging might also be used for myocardial perfusion assessment, by visually looking for hypo attenuated regions that may correspond to hypo ...
 
A Tool for Visually Exploring Multi-objective Mixed-Integer Optimization Models
Found in: 2014 18th International Conference on Information Visualisation (IV)
By Rui Borges Lopes,Beatriz Sousa Santos,Carlos Ferreira
Issue Date:July 2014
pp. 378-381
Multi-objective optimization models have been increasingly used as optimal decisions are searched in settings considering several conflicting objectives. In these cases compromises must be made and often a large number of non-dominated optimal solutions ex...
 
3D visualization of geophysical resistivity data to delineate contamination anomalies in a landfill
Found in: 2012 16th International Conference on Information Visualisation (IV)
By Vitor Goncalves,Maria Joao Fontoura,Paulo Dias,Rui Moura,Beatriz Sousa Santos
Issue Date:July 2012
pp. 170-175
Geophysical data represent subsoil structure in a specific area and can be used to extract subsoil information for various purposes. In this work we used this data type to detect anomalies/contamination in the subsoil. Our case study was based on data acqu...
 
Exploring New Ways of Integration, Visualization and Interaction with Geotechnical and Geophysical Data
Found in: Information Visualisation, International Conference on
By Vítor Gonçalves, Fernando Almeida, Paulo Dias, Beatriz Sousa Santos
Issue Date:July 2010
pp. 181-185
The work presented in this paper aims at exploring new ways of integrating, visualizing and interacting with geotechnical and geophysical data that may be more rich and interactive than those offered by most current Geographic Information Systems (GIS). So...
 
CardioAnalyser: A Software Tool for Segmentation and Analysis of the Left Ventricle from 4D MDCT Images of the Heart
Found in: Information Visualisation, International Conference on
By Samuel Silva, Joaquim Madeira, Beatriz Sousa Santos, Augusto Silva
Issue Date:July 2010
pp. 629-634
Cardiac angiography using multiple detector row computerized tomography (MDCT) scanners provides 3D data concerning the heart and, in particular, the left ventricle (LV), for different cardiac phases along one cardiac cycle. Exploring this data for LV func...
 
Information Visualization in Facility Location and Vehicle Routing Decisions
Found in: Information Visualisation, International Conference on
By Rui Borges Lopes, Beatriz Sousa Santos, Paulo Dias, Carlos Ferreira
Issue Date:July 2010
pp. 110-115
Facility location and vehicle routing are amongst the most important logistic decisions in today’s organizations. These aspects are intertwined and, in some cases, should be addressed in an integrated way (giving rise to the location-routing approach). A d...
 
Processing, Visualization and Analysis of Medical Images of the Heart: An Example of Fast Prototyping Using MeVisLab
Found in: Visualisation, International Conference in
By Samuel Silva, Beatriz Sousa Santos, Joaquim Madeira, Augusto Silva
Issue Date:July 2009
pp. 165-170
Developing and testing new algorithms for medical imaging processing can be a tiresome task as it often requires an additional set of tools to visualize the data and results and perform validation steps along the development. The integration among all thes...
 
There is More to Color Scales than Meets the Eye: A Review on the Use of Color in Visualization
Found in: Information Visualisation, International Conference on
By Samuel Silva, Joaquim Madeira, Beatriz Sousa Santos
Issue Date:July 2007
pp. 943-950
The appropriate use of color in Visualization is a very important subject. The choice of the proper color scale to use with a particular data set is not just a matter of choosing the prettiest representation. Throughout the years researchers have studied t...
 
Preliminary Usability Evaluation of PolyMeCo: A Visualization Based Tool for Mesh Analysis and Comparison
Found in: Geometric Modeling and Imaging--New Trends
By Beatriz Sousa Santos, Samuel Silva, Leonor Teixeira, Carlos Ferreira, Paulo Dias, Joaquim Madeira
Issue Date:July 2007
pp. 133-139
An overall description of the methods used and the results obtained in the on-going evaluation of PolyMeCo a mesh analysis and comparison tool - is presented. We are trying to evaluate some aspects of both the user interface and the visualization technique...
 
POLYMECO — A Polygonal Mesh Comparison Tool
Found in: Information Visualisation, International Conference on
By Samuel Silva, Joaquim Madeira, Beatriz Sousa Santos
Issue Date:July 2005
pp. 842-847
<p>Polygonal meshes are used in many areas to model different objects and structures. Depending on their applications, they sometimes have to be processed to, for instance, reduce their complexity (simplification). This mesh processing introduces err...
 
Integrated Visualization Schemes for an Information and Communication Web Log Based Management System
Found in: Information Visualisation, International Conference on
By Óscar Mealha, Beatriz Sousa Santos, José Nunes, Florin Zamfir
Issue Date:July 2004
pp. 295-301
This paper presents a set of visualization methods incorporated in a system for internal technologically mediated communication and information management. This system, which assumes an organizational context and an intranet built on World Wide Web technol...
 
Visual Application for the Analysis of Web-Based Information Systems Usage: A Preliminary Usability Evaluation
Found in: Information Visualisation, International Conference on
By Beatriz Sousa Santos, Florin Zamfir, Carlos Ferreira, Óscar Mealha, José Nunes
Issue Date:July 2004
pp. 812-818
This paper presents a general description of the methods used in the on-going evaluation of a Visualizer, which is a sub-component of the Web Log Visual Analysis System. We are trying to evaluate some aspects of the user interface and visualization techniq...
 
Information Visualization in Locating Obnoxious Facility: Some Examples with Mono and Bicriteria Models
Found in: Information Visualisation, International Conference on
By Carlos Ferreira, Beatriz Sousa Santos
Issue Date:July 2000
pp. 439
The problem of locating obnoxious facilities has become a major social concern. Operation Research models and methods have been used in this context, however their use can be jeopardized by the huge demanded effort. In consequence, the use of visualization...
 
Student Projects Involving Novel Interaction with Large Displays
Found in: IEEE Computer Graphics and Applications
By Paulo Dias,Tiago Sousa,Joao Parracho,Igor Cardoso,Andre Monteiro,Beatriz Sousa Santos
Issue Date:March 2014
pp. 80-86
DETI-Interact is an interactive system that offers information relevant to students in the lobby of the University of Aveiro's Department of Electronics, Telecommunications and Informatics (DETI). The project started in 2009 with a master's thesis addressi...
 
Investigating Landfill Contamination by Visualizing Geophysical Data
Found in: IEEE Computer Graphics and Applications
By Vitor Goncalves,Paulo Dias,Maria Joao Fontoura,Rui Moura,Beatriz Sousa Santos
Issue Date:January 2014
pp. 16-21
Geophysical experts aimed to establish a method to identify contamination by landfill leakage without chemically analyzing subsoil samples, which is time-consuming and expensive. To that end, researchers developed a software package that let the experts cr...
 
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