Web: http://arxiv.org/abs/2206.13397

Sept. 22, 2022, 1:13 a.m. | Severi Rissanen, Markus Heinonen, Arno Solin

stat.ML updates on arXiv.org arxiv.org

While diffusion models have shown great success in image generation, their
noise-inverting generative process does not explicitly consider the structure
of images, such as their inherent multi-scale nature. Inspired by diffusion
models and the desirability of coarse-to-fine modelling, we propose a new model
that generates images through iteratively inverting the heat equation, a PDE
that locally erases fine-scale information when run over the 2D plane of the
image. We interpret the solution of the forward heat equation as a variational …

arxiv heat modelling

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