2017
Authors
Adao, T; Padua, L; Hruska, J; Peres, E; Sousa, JJ; Morais, R; Magalhaes, LG;
Publication
2017 24 ENCONTRO PORTUGUES DE COMPUTACAO GRAFICA E INTERACAO (EPCGI)
Abstract
A methodology to rapidly produce environments that combine the intuition of in situ augmented reality (AR) with the commodity of virtual reality (VR) is proposed in this paper, by bringing together unmanned aerial systems (UAS) imagery and procedural modelling. While fully synthesized environments provide a very accurate visualization of the conserved parts of the real-world, missing parts - namely ruins - can be complemented with procedurally modelled structures. Regarding methodology's steps, firstly, a UAS flight mission gathers georeferenced imagery data about the site of interest. Then, the image set is converted to an accurate 3D model of the referred site, through photogrammetry. By considering the geographic information that also results from the previous process, ruins are manually outlined for georeferencing purposes. To complement ruins' missing information, virtual models of buildings are produced too, in a procedural modelling tool. Finally, at the full VR environment setup step, all elements are imported and subjected to geometric transformations that aim to match the procedurally modelled buildings with the outlined ruins. To improve the insight about the process work-flow, system's architecture and implementation are presented along with a case-study regarding a historically relevant site - Vila Velha's city gates (Vila Real, Portugal) - and preliminary results.
2017
Authors
Magalhães, LG; Adão, T; Peres, E;
Publication
Handbook of Research on Technological Developments for Cultural Heritage and eTourism Applications - Advances in Hospitality, Tourism, and the Services Industry
Abstract
2016
Authors
Adão, T; Magalhães, L; Peres, E;
Publication
SpringerBriefs in Computer Science
Abstract
2016
Authors
Adão, T; Magalhães, L; Peres, E;
Publication
SpringerBriefs in Computer Science
Abstract
This last chapter succinctly reviews the main contributions of the procedural modelling methodology presented in this book, briefly compares some of its aspects with other works and presents a set of notes to be considered as future research opportunities. © The Author(s) 2016.
2016
Authors
Adão, T; Magalhães, L; Peres, E;
Publication
SpringerBriefs in Computer Science
Abstract
This chapter presents the final version of the procedural modelling methodology which works with an ontology-based grammar. Its procedural modelling process supports the generation of virtual buildings delimited by non-convex shapes, with divisions constrained by a variable number of delimiting wall segments. Furthermore, an experimental graph-based stochastic process that bridges with this methodology to enable the production of virtual random buildings is covered. © The Author(s) 2016.
2016
Authors
Adão, T; Magalhães, L; Peres, E;
Publication
SpringerBriefs in Computer Science
Abstract
The second procedural modelling methodology version that will be addressed in this chapter has a modified treemap-based approach that enables the generation of virtual buildings with floor plans constrained by convex polygons. Other improvements include the input rules simplification and the incorporation of a moderation process to validate each input set (regarding syntax and geometry). © The Author(s) 2016.
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