Encontrados 5 documentos, a visualizar página 1 de 1
A topological framework for interactive queries on 3D models in the web
Figueiredo, Mauro; Rodrigues, J. I.; Silvestre, Ivo; Veiga-Pires, C.Several technologies exist to create 3D content for the web. With X3D, WebGL, and X3DOM, it is possible to visualize and interact with 3D models in a web browser. Frequently, three-dimensional objects are stored using the X3D file format for the web. However, there is no explicit topological information, which makes it difficult to design fast algorithms for applications that require adjacency and incidence dat...
Cave chamber data modeling and 3D Web visualization
Silvestre, Ivo; Rodrigues, J. I.; Figueiredo, Mauro; Veiga-Pires, C.Underground caves and its specific structures are important for geomorphological studies. In this paper we present tools to identify and map speleothems by surveying cave chambers interiors. The cave chamber was surveyed using Terrestrial Laser Scanning to acquire point clouds with high level of detail for 3D model generation. This data with 45 million points is useful for either reconstruction, geomorphologica...
Framework for 3D data modeling and Web visualization of underground caves using...
Silvestre, Ivo; Veiga-Pires, C.; Rodrigues, J. I.; Figueiredo, MauroTerrestrial Laser Scanning is a very useful technique for cave studies. This surveying method creates point clouds with high detail levels for 3D model generation, which is indeed useful for either reconstruction, geomorphological studies or virtual visits of caves. The present work generated a 3D model of a cave chamber and developed a framework for 3D data visualization on the Web. Identifying geomorphologica...
Indoor localization and navigation for blind persons using visual landmarks and...
Serrão, M.; Rodrigues, J. M. F.; Rodrigues, J. I.; du Buf, J. M. H.In an unfamiliar environment we spot and explore all available information which might guide us to a desired location. This largely unconscious processing is done by our trained sensory a nd cognitive systems. These recognize and memorize sets of landmarks which allow us to create a mental map of the envi ronment, and this map enables us to navigate by exploiting very few but the most important landmarks stored...
Modelação 3D de grutas
Silvestre, Ivo; Rodrigues, J. I.; Figueiredo, Mauro; Veiga-Pires, C.A representação computacional de objetos espaciais complexos, como é o caso de grutas, possui variados campos de aplicações em domínios técnicos, científicos e artísticos. A construção destas representações envolve múltiplas tecnologias de aquisição e processamento de grandes conjuntos de dados. O presente trabalho apresenta um caso prático de criação de um modelo 3D do interior da gruta Algar do Penico (Algarv...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||