2026-04-05T10:47:08Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4034352026-01-14T07:18:55Zcom_2072_1033col_2072_452950

Real-time solar exposure simulation in complex cities Muñoz Pandiella, Imanol Bosch Geli, Carles Merillou, Nicolas Pueyo Sandez, Francesc Xavier Merillou, Stephane Àrees temàtiques de la UPC::Informàtica::Infografia Three-dimensional imaging in architecture Sustainable architecture Illumination rendering Rendering Real-time rendering Visibility determination Imatgeria tridimensional en arquitectura Arquitectura sostenibl In urban design, estimating solar exposure on complex city models is crucial but existing solutions typically focus on simplified building models and are too demanding in terms of memory and computational time. In this paper, we propose an interactive technique that estimates solar exposure on detailed urban scenes. Given a directional exposure map computed over a given time period, we estimate the sky visibility factor that serves to evaluate the final exposure at each visible point. This is done using a screen-space method based on a two-scale approach, which is geometry independent and has low storage costs. Our method performs at interactive rates and is designer-oriented. The proposed technique is relevant in architecture and sustainable building design as it provides tools to estimate the energy performance of buildings as well as weathering effects in urban environments. Thiswork was partially funded by TIN2014-52211-C2-2R project from Ministerio de Economía y Competitividad (Spain) and by the ANR under ref. ANR-16-CE33-0001 (France). Peer Reviewed Postprint (author's final draft) 2017-12 Article https://doi.org/10.1111/cgf.13152 Open Access John Wiley & sons