Journal
ACM TRANSACTIONS ON GRAPHICS
Volume 41, Issue 3, Pages -Publisher
ASSOC COMPUTING MACHINERY
DOI: 10.1145/3504002
Keywords
Monte Carlo; rendering; sampling; perceptual error; blue noise; halftoning; dithering; error diffusion
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Funding
- European Research Council (ERC) under the European Union [741215]
- European Research Council (ERC) [741215] Funding Source: European Research Council (ERC)
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This paper proposes a perception-oriented framework to optimize rendering errors by distributing the error as visually pleasing blue noise in image space. It leverages models based on human perception to improve image fidelity and shows substantial improvements over prior state of the art.
Synthesizing realistic images involves computing high-dimensional light-transport integrals. In practice, these integrals are numerically estimated via Monte Carlo integration. The error of this estimation manifests itself as conspicuous abasing or noise. To ameliorate such artifacts and improve image fidelity, we propose a perception-oriented framework to optimize the error of Monk. Carlo rendering. We leverage models based on human perception from the halftoning literature. The result is an optimization problem whose solution distributes the error as visually pleasing blue noise in image space. To find solutions, we present a set of algorithms that provide varying trade-offs between quality and speed, showing substantial improvements over prior state of the art. We perform evaluations using quantitative and error metrics and provide extensive supplemental material to demonstrate the perceptual improvements achieved by our methods.
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