135350 20260217205557.0 doi 10.1111/cgf.15009 sideral 138626 ART-2024-138626 eng Monzón, Néstor Universidad de Zaragoza (orcid)0000-0002-5323-3233 Real-Time Underwater Spectral Rendering 2024 Access copy available to the general public Unrestricted The light field in an underwater environment is characterized by complex multiple scattering interactions and wavelength‐dependent attenuation, requiring significant computational resources for the simulation of underwater scenes. We present a novel approach that makes it possible to simulate multi‐spectral underwater scenes, in a physically‐based manner, in real time. Our key observation is the following: In the vertical direction, the steady decay in irradiance as a function of depth is characterized by the diffuse downwelling attenuation coefficient, which oceanographers routinely measure for different types of waters. We rely on a database of such real‐world measurements to obtain an analytical approximation to the Radiative Transfer Equation, allowing for real‐time spectral rendering with results comparable to Monte Carlo ground‐truth references, in a fraction of the time. We show results simulating underwater appearance for the different optical water types, including volumetric shadows and dynamic, spatially varying lighting near the water surface. info:eu-repo/grantAgreement/ES/AEI/PID2022-141539NB-I00 info:eu-repo/grantAgreement/ES/MCIN/AEI/10.13039/501100011033 info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es 2.9 2024 COMPUTER SCIENCE, SOFTWARE ENGINEERING 49 / 129 = 0.38 2024 Q2 T2 0.788 2024 Computer Graphics and Computer-Aided Design 2024 Q1 Computer Networks and Communications 2024 Q2 6.0 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Gutierrez, Diego Universidad de Zaragoza (orcid)0000-0002-7503-7022 Akkaynak, Derya Muñoz, Adolfo Universidad de Zaragoza (orcid)0000-0002-8160-7159 5007 570 Universidad de Zaragoza Dpto. Informát.Ingenie.Sistms. Área Lenguajes y Sistemas Inf. (2024), 11 pp. Comput. graph. forum Computer Graphics Forum 0167-7055 712940 http://zaguan.unizar.es/record/135350/files/texto_completo.pdf Versión publicada 2411724 http://zaguan.unizar.es/record/135350/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:135350 articulos driver 2026-02-17-20:43:10 ARTICLE