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Desenvolvimento de aplicações Web com base em modelagem 3D: módulo Android

Casella, Bruno Fernandes
Fonte: Universidade Estadual Paulista (UNESP) Publicador: Universidade Estadual Paulista (UNESP)
Tipo: Trabalho de Conclusão de Curso
Português
Relevância na Pesquisa
17.672871%
This project brings the development of an Android application which will allow users to access 3D models on web. The application developed allows Android devices to access web pages which have code that should use OPENGL to renderize. To demonstrate this functionality, an example web application was build, using technologies such as X3DOM and HTML5, which uses WebGL to get renderized. This web application gives to the user an environment of a virtual city, where he could surf by and interact with the objects. The Android application brings this immersion to the mobile world, also. The access and storage of data was developed a Webserver, which bring to the web application a simple API to give access to the database; Este trabalho apresenta o desenvolvimento de uma aplicação Android que possibilita o acesso a ambientes 3D na web. A aplicação desenvolvida possibilita a maioria dos dispositivos Android o acesso a páginas web que contenham conteúdo que utiliza OpenGL para sua renderização. Para tal demonstração de funcionalidade, é utilizada uma aplicação web baseada em modelagem 3D, utilizando tecnologias como X3DOM e HTML5, renderizando os objetos 3D através de WebGL. Esta aplicação web visa dar ao usuário um ambiente de uma cidade virtual...

Cave chamber data modeling and 3D Web visualization

Silvestre, Ivo; Rodrigues, J. I.; Figueiredo, Mauro; Veiga-Pires, C.
Fonte: Universidade do Algarve Publicador: Universidade do Algarve
Tipo: Outros
Publicado em //2013 Português
Relevância na Pesquisa
27.67287%
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, geomorphological studies or virtual visits of caves. With this point cloud we generated a 3D-mesh to represent the surface model of the cave chamber, which is important to study its geomorphological features. A topological structure of the 3D-mesh was also implemented to get an efficient algorithm to help identifying stalactites. The possibility to publish 3D data on the Web is of particular interest for the geospatial field. For this reason, it was decided to make the cave model available in the Web by developing a 3D graphical interface where users can navigate and interact with the three-dimensional models of the cave. For this Web3D framework it was used X3D, WebGL and X3DOM. Such solution does not require any additional plug-ins or components.

Framework for 3D data modeling and Web visualization of underground caves using open source tools

Silvestre, Ivo; Veiga-Pires, C.; Rodrigues, J. I.; Figueiredo, Mauro
Fonte: ACM Publicador: ACM
Tipo: Conferência ou Objeto de Conferência
Publicado em /06/2013 Português
Relevância na Pesquisa
27.67287%
Terrestrial 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 geomorphological structures is one of the goals of this project. The generated 3D-mesh represents the surface model of the cave chamber, which is important to study its geomorphological features. A topological structure of the 3D-mesh was implemented to get an efficient algorithm to help determining stalactites. The recognition and positioning of cave stalactites can provide information on hidden cave features responsible for cave geomorphology. The possibility to publish 3D data on the Web is of particular interest for the geospatial field. For this reason, it was decided to make the cave model available in the Web by developing a 3D graphical interface where users can navigate and interact with the threedimensional models of the cave. For this Web framework, X3D, WebGL and X3DOM were used. Such solution does not require any additional plug-ins or components.

A topological framework for interactive queries on 3D models in the web

Figueiredo, Mauro; Rodrigues, J. I.; Silvestre, Ivo; Veiga-Pires, C.
Fonte: Hindawi publishing corporation Publicador: Hindawi publishing corporation
Tipo: Artigo de Revista Científica
Publicado em //2014 Português
Relevância na Pesquisa
16.943906%
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 data. This paper presents a new open source toolkit TopTri (Topological model for Triangle meshes) for Web3D servers that builds the topological model for triangular meshes of manifold or nonmanifold models. Web3D client applications using this toolkit make queries to the web server to get adjacent and incidence information of vertices, edges, and faces. This paper shows the application of the topological information to get minimal local points and iso-lines in a 3D mesh in a web browser. As an application, we present also the interactive identification of stalactites in a cave chamber in a 3D web browser. Several tests show that even for large triangular meshes with millions of triangles, the adjacency and incidence information is returned in real time making the presented toolkit appropriate for interactive Web3D applications.

High-resolution digital 3D models of Algar do Penico Chamber: limitations, challenges, and potential

Silvestre, Ivo; Rodrigues, J. I.; Figueiredo, Mauro; Veiga-Pires, C.
Fonte: IJS Publicador: IJS
Tipo: Artigo de Revista Científica
Publicado em //2015 Português
Relevância na Pesquisa
16.943906%
The study of karst and its geomorphological structures is important for understanding the relationships between hydrology and climate over geological time. In that context, we conducted a terrestrial laser-scan survey to map geomorphological structures in the karst cave of Algar do Penico in southern Portugal. The point cloud data set obtained was used to generate 3D meshes with different levels of detail, allowing the limitations of mapping capabilities to be explored. In addition to cave mapping, the study focuses on 3D-mesh analysis, including the development of two algorithms for determination of stalactite extremities and contour lines, and on the interactive visualization of 3D meshes on the Web. Data processing and analysis were performed using freely available open-source software. For interactive visualization, we adopted a framework based on Web standards X3D, WebGL, and X3DOM. This solution gives both the general public and researchers access to 3D models and to additional data produced from map tools analyses through a web browser, without the need for plug-ins.

A Topological Framework for Interactive Queries on 3D Models in the Web

Figueiredo, Mauro; Rodrigues, José I.; Silvestre, Ivo; Veiga-Pires, Cristina
Fonte: Hindawi Publishing Corporation Publicador: Hindawi Publishing Corporation
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
16.943906%
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 data. This paper presents a new open source toolkit TopTri (Topological model for Triangle meshes) for Web3D servers that builds the topological model for triangular meshes of manifold or nonmanifold models. Web3D client applications using this toolkit make queries to the web server to get adjacent and incidence information of vertices, edges, and faces. This paper shows the application of the topological information to get minimal local points and iso-lines in a 3D mesh in a web browser. As an application, we present also the interactive identification of stalactites in a cave chamber in a 3D web browser. Several tests show that even for large triangular meshes with millions of triangles, the adjacency and incidence information is returned in real time making the presented toolkit appropriate for interactive Web3D applications.

Enhancing X3DOM Declarative 3D with Rigid Body Physics Support

Stamoulias, Andreas; Malamos, Athanasios G.; Zampoglou, Markos; Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
38.054712%
Given that physics can be fundamental for realistic and interactive Web3D applications, a number of JavaScript versions of physics engines have been introduced during the past years. This paper presents the implementation of the rigid body physics component, as defined by the X3D specification, in the X3DOM environment, and the creation of dynamic 3D interactive worlds. We briefly review the state of the art in current technologies forWeb3D graphics, including HTML5, WebGL and X3D, and then explore the significance of physics engines in building realistic Web3D worlds. We include a comprehensive review of JavaScript physics engine libraries, and proceed to summarize the significance of our implementation while presenting in detail the methodology followed. The results obtained so far from our cross-browser experiments demonstrate that real-time interactive scenes with hundreds of rigid bodies can be constructed and operate with acceptable frame rates, while the allowing the user to maintain the scene control.; The research of this paper is granted by the European Union and the Hellenic General Secretary of Research and Technology under the COOPERATION 2009 / 09SYN-72-956 Framework.

Integration of X3D Geospatial in a Data Driven Web Application

McCann, Michael; Yoo, Byounghyun; Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
16.943906%
The Monterey Bay Aquarium Research Institute designed the Spatial Temporal Oceanographic Query System (STOQS) [MBARI 2014] to create new capabilities for scientists to gain insight from their data. STOQS employs open standards and is a 100% free and open source project. It includes a web-based graphical user interface where X3D Geospatial has been integrated to enable 3D geospatial data visualization.

X3D Distributed Interactive Simulation (DIS) Implementation and Run-Time Discovery of New Entities using X3DOM

McGregor, Don; Harder, Byron; Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
38.054712%
New capabilities in web browser JavaScript implementations including networking, improved graphics performance, and improved speed allow the implementation of Networked Virtual Environments (NVEs) inside the web browser. An NVE can be written in JavaScript, which enables deployment in the enterprise entirely from a web server without the use of browser plugins. We discuss one implementation of this idea using X3DOM, an opensource implementation of the X3D standard written in JavaScript. The Open-DIS library for the IEEE Distributed Interactive Simulation (DIS) network protocol is used to create a partial implementation of the X3D standard’s DIS profile. Mechanisms for using the X3D DIS Profile DISEntityTypeMapping and DISEntityManager to enable run-time discovery and launching of new entities are discussed. Measurements of the capabilities and performance aspects of Websockets for network transport demonstrate excellent results.

eMouseAtlas informatics: embryo atlas and gene expression database

Armit, Chris; Richardson, Lorna; Hill, Bill; Yang, Yiya; Baldock, Richard A.
Fonte: Springer US Publicador: Springer US
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
16.943906%
A significant proportion of developmental biology data is presented in the form of images at morphologically diverse stages of development. The curation of these datasets presents different challenges to that of sequence/text-based data. Towards this end, the eMouseAtlas project created a digital atlas of mouse embryo development as a means of understanding developmental anatomy and exploring the relationship between genes and development in a spatial context. Using the morphological staging system pioneered by Karl Theiler, the project has generated 3D models of post-implantation mouse development and used them as a spatial framework for the delineation of anatomical components and for archiving in situ gene expression data in the EMAGE database. This has allowed us to develop a unique online resource for mouse developmental biology. We describe here the underlying structure of the resource, as well as some of the tools that have been developed to allow users to mine the curated image data. These tools include our IIP3D/X3DOM viewer that allows 3D visualisation of anatomy and/or gene expression in the context of a web browser, and the eHistology resource that extends this functionality to allow visualisation of high-resolution cellular level images of histology sections. Furthermore...