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- W2912558600 abstract "High-fidelity real-world lighting is a complex and rapidly expanding field of study in computer graphics. Rendering with real-world lighting plays a crucial part in motion pictures, computer games, Augmented Reality (AR) and Virtual Reality (VR) applications. There are, however, many constraints when capturing and representing real-world lights for rendering. In particular, dimensionality plays a significant role although existing industry-standard methods are inadequate to capture light throughout the three spatial, two angular and a temporal dimension simultaneously.Image Based Lighting (IBL) techniques addresses temporality by capturing two angular and the temporal dimension simultaneously. The Incident Light Fields (ILF) technique, on the other hand, can capture complex spatially varying real-world light incident on a static scene covering five angular and spatial dimensions. However, any changes in the positions or the radiometric properties of direct light sources in the scene over time invalidates the captured ILF due to the subsequent changes in the indirect lighting. In a dynamically varying lighting condition, ILF needs to be recaptured with each change in the lighting which is infeasible in most real-world situations.This thesis proposes a novel technique called “Dynamic Change Propagation” (DCP) that can simulate any changes made in the direct light and propagate the effects to the indirect lighting recorded in a captured ILF. Evaluations show average RMSE errors of 0.034 with absolute percentage errors of 6.8% for light source movement simulation and 0.013 (RMSE) for 3.4% for intensity change simulations.In addition to the DCP technique, this thesis proposes a novel “Temporal Incident Light Field” (Temporal ILF) technique which records the changes in the light sources over time and utilizes the DCP technique to simulate those changes into the originally recorded static ILF thus, capturing six (spatial, angular and temporal) dimensions.To the best of our knowledge, Temporal ILF is the first method which can record high-fidelity real-world light over all six spatial, angular and temporal dimensions simultaneously. The introduction of the DCP and Temporal ILF techniques in this thesis offers new ways of rendering with spatio-temporally variant high-fidelity real-world light." @default.
- W2912558600 created "2019-02-21" @default.
- W2912558600 creator A5076018767 @default.
- W2912558600 date "2018-06-01" @default.
- W2912558600 modified "2023-09-27" @default.
- W2912558600 title "Temporal incident light fields" @default.
- W2912558600 hasPublicationYear "2018" @default.
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