Visual Acceptance of Library-Generated CityGML LOD3 Building Models

Abstract

The acceptance of 3D building models is critical to all urban 3D visualization projects. Building models that are identified as unacceptable can increase the cost of the project, delay the delivery, and, in some cases, cancel the acceptance of the entire project. A 3D modelling approach of using representative textures and geometry rather than actual photorealistic textures and geometry was conducted to determine whether participants who frequent the building multiple times a week over a period of a year would be able to identify the visual difference. Three focus groups were established and used to evaluate the visual quality of the 3D building models. Participants were asked to rank the visual quality of the building, as well as identifying any geometry, texture, or overall visual quality problems. The participants from the three focus groups did not identify any texture or geometry mistakes present in the building models. The overall visual quality identified by the participants from the three focus groups was above average, suggesting that the 3D modelling approach is an effective means for modelling buildings with high visitation and significance. RÉSUMÉL'adoption des maquettes d'immeubles 3D est indispensable pour tous les projets de visualisation tridimensionnels urbains. Les maquettes d'immeubles définies comme inacceptables peuvent augmenter les coû ts du projet, retarder sa livraison et même en venir à l'annulation du projet. Une étude d'une approche de modélisation 3D utilisant des textures et des formes représentatives plutôt que photoréalistes, a été menée afin de vérifier si les participants qui fréquentent plusieurs fois par semaine au cours d'une année l'immeuble modélisé sont en mesure de déterminer les différences visuelles. On a demandé à trois groupes d'évaluer la qualité visuelle des maquettes 3D selon un certain classement et d'indiquer tout problème avec les formes, les textures et l'ensemble de la qualité visuelle. Les participants de ces groupes n'ont pu déceler d'erreurs dans les formes ou textures, et ils ont estimé que l'ensemble de la qualité visuelle était supérieur à la moyenne, ce qui suggère que l'approche de modélisation 3D est un moyen efficace de modéliser des immeubles achalandés et de grande importance.

Estimating the Photovoltaic Potential of Building Facades and Roofs Using the Industry Foundation Classes

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A Sliding Window Method for Detecting Corners of Openings From Terrestrial Lidar Data

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Qualitative GIS: An Open Framework Using SpatiaLite and Open Source GIS

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