Physically based rendering of ice crystal halos

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dc.contributor.authorFirmino, Arthur
dc.contributor.supervisorWyvill, Brian
dc.date.accessioned2019-02-08T21:48:24Z
dc.date.copyright2018en_US
dc.date.issued2019-02-08
dc.degree.departmentDepartment of Computer Science
dc.degree.levelMaster of Science M.Sc.en_US
dc.description.abstractThe anisotropic scattering properties of atmospheric ice crystals lead to complex and visually appealing halos, however these have yet to receive due modelling in physically based rendering systems. This project aims to ll that gap and render high quality, physically accurate images of these phenomena. To capture the crystal s scattering properties, represented by a phase function, we construct a virtual goniore ectometer simulating light rays incident on an ice crystal. A physically based renderer is extended to read our phase functions, allowing halos to be rendered by a volumetric path tracer. Multiple halos were rendered, with varying crystal shapes and orientations, and the resulting images were qualitatively compared with real photographs. The approaches used to approximate and sample the phase functions, despite yielding quality images, incurr an objectionable time and space cost. Possible alternatives and solutions are discussed in conclusion.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/10602
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.subjectrenderingen_US
dc.subjectphysically based renderingen_US
dc.subjecthalosen_US
dc.subjectanisotropic scatteringen_US
dc.subjectcomputer graphicsen_US
dc.titlePhysically based rendering of ice crystal halosen_US
dc.typeProjecten_US

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