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Now showing 1 - 6 of 6
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    A Procedural Approach for Thermal Visualization on Buildings
    (The Eurographics Association, 2018) Muñoz, David; Besuievsky, Gonzalo; Patow, Gustavo A.; García-Fernández, Ignacio and Ureña, Carlos
    Thermal behaviour analysis on buildings is an important goal for all tasks involving energy flow simulation in urban environments. One of the most widely used simplified thermal models is based on an electrical analogy, where nodes are set to simulate and solve a circuit network. In this paper we propose a procedural approach for automatically locate the nodes of the circuit, according to the building structure. We provide a conceptual technique to efficiently visualize thermal variations over time in buildings. We show that we can simulate and visually represent the variations of the interior temperatures of a building over a period of time. We believe that the technique could be helpful for rapid analysis for changing building parameters, such as materials, dimensions or number of floors.
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    Tools for Structural Analysis and Optimization of Procedural Masonry Buildings
    (The Eurographics Association, 2016) Fita, Josep Lluis; Besuievsky, Gonzalo; Patow, Gustavo; Alejandro Garcia-Alonso and Belen Masia
    We present a set of off-the-shelf tools that will enable structural simulations and optimization into procedural modeled masonry buildings, as historical buildings like cathedrals or churches. For instance, with our tools we are capable of easily knowing whether the roof of a given masonry structure is sound, if it falls down, and, in the later case, even which brick of this structure has moved. For this we integrate a set of custom tools into the available Houdini platform [Sid12], together with the freely available Bullet engine and a set of Python scripts to quickly and efficiently simulate masonry structures.
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    A Virtual Reality Front-End for Earthquake Simulation
    (The Eurographics Association, 2019) Fita, Josep Lluis; Besuievsky, Gonzalo; Patow, Gustavo A.; Casas, Dan and Jarabo, Adrián
    Virtual Reality has traditionally been used in Cultural Heritage for giving to the final user an immersive experience over recreated scenarios, which usually have been designed and focused on static environment recreation. In spite of its importance for cultural heritage, we have found a lack of virtual reality applications to recreate structural and seismic simulations on historical buildings. In this paper we describe a low-cost virtual reality solution, affordable for all kinds of users that own a smart-phone. Through our application, the users can have an immersive experience that combines the ancient building recreation, its structural simulation and the natural phenomena simulation like earthquakes.
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    Reusable Procedural Building Parts
    (The Eurographics Association, 2022) Arangua, Alejandro; Patow, Gustavo; Besuievsky, Gonzalo; Posada, Jorge; Serrano, Ana
    With the increase in popularity of procedural urban modeling for film, TV, and interactive entertainment, an urgent need for editing tools to support procedural content creation has become apparent. In this paper, we present an end-to-end system for creating a library of reusable procedural parts in a rule-based setting to address this need. No trivial extension exists to perform this action in a way such that the resulting ruleset is ready for production. For procedural reusable parts, we need to handle the rulesets extracted from the source graphs, and later on, merge them with a target graph to obtain a final consistent ruleset. As one of the main contributions of our system, we introduce a library of reusable parts that could be seamlessly glued to other graphs and obtain consistent new procedural buildings. Hence, we focus on intuitive and minimal user interaction, and our editing operations perform interactively to provide immediate feedback.
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    An Interactive Tool for Modeling Ancient Masonry Buildings
    (The Eurographics Association, 2017) Fita, Josep Lluis; Besuievsky, Gonzalo; Patow, Gustavo; Fco. Javier Melero and Nuria Pelechano
    We present a new pipeline of an interactive tool that combines procedural modeling of ancient masonry buildings with structural simulation. The tool has been designed for taking an input geometry of an ancient building and re-meshing it into a suitable mesh with a low quad density. Then, it creates the brick outlines on the mesh and adds the brick volumes for structural simulation. The tool was designed and built on a set of off-the-shelf tools. We tested and demonstrated its viability by modeling of a Romanesque church based on a real one from the 11th century, such as the church of Santa Maria de Agullana.
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    A Level-of-Detail Technique for Urban Physics Calculations in Large Urban Environments
    (The Eurographics Association, 2019) Novoa, David Muñoz; Besuievsky, Gonzalo; Patow, Gustavo; Casas, Dan and Jarabo, Adrián
    In many applications, such as urban physics simulations or the study of the solar impact effects at different scales, complex 3D city models are required to evaluate physical values. In this paper we present a new technique which, through the use of an electrical analogy and the calculation of sky view factors and form factors, allows to simulate and study the thermal behaviour of an urban environment, taking into account the solar and sky radiation, the air and sky temperatures, and even the thermal interaction between nearby buildings. We also show that it is possible, from a 3D recreation of a large urban environment, to simulate the heat exchanges that take place between the buildings of a city and its immediate surroundings. In the same way, taking into account the terrestrial zone, the altitude and the type of climate with which the simulations are carried out, it is possible to compare the thermal behaviour of a large urban environment according to the chosen conditions.