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- W4385965509 abstract "Ill-posed linear inverse problems that combine knowledge of the forward measurement model with prior models arise frequently in various applications, from computational photography to medical imaging. Recent research has focused on solving these problems with score-based generative models (SGMs) that produce perceptually plausible images, especially in inpainting problems. In this study, we exploit the particular structure of the prior defined in the SGM to formulate recovery in a Bayesian framework as a Feynman--Kac model adapted from the forward diffusion model used to construct score-based diffusion. To solve this Feynman--Kac problem, we propose the use of Sequential Monte Carlo methods. The proposed algorithm, MCGdiff, is shown to be theoretically grounded and we provide numerical simulations showing that it outperforms competing baselines when dealing with ill-posed inverse problems." @default.
- W4385965509 created "2023-08-18" @default.
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- W4385965509 date "2023-08-15" @default.
- W4385965509 modified "2023-09-23" @default.
- W4385965509 title "Monte Carlo guided Diffusion for Bayesian linear inverse problems" @default.
- W4385965509 doi "https://doi.org/10.48550/arxiv.2308.07983" @default.
- W4385965509 hasPublicationYear "2023" @default.
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