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Fast and Robust Pyramid-based Image Processing

Sylvain Paris, Samuel W. Hasinoff, Jan Kautz, Mathieu Aubry, Fredo Durand
Computer Science and ArtificialIntelligence Laboratory, Massachusetts Institute of Technology
Massachusetts Institute of Technology, Computer Science and ArtificialIntelligence Laboratory, Technical Report MIT-CSAIL-TR-2011-049, 2011

@article{aubry2011fast,

   title={Fast and Robust Pyramid-based Image Processing},

   author={Aubry, M. and Paris, S. and Hasinoff, S.W. and Durand, F.},

   year={2011}

}

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Multi-scale manipulations are central to image editing but they are also prone to halos. Achieving artifact-free results requires sophisticated edgeaware techniques and careful parameter tuning. These shortcomings were recently addressed by the local Laplacian filters, which can achieve a broad range of effects using standard Laplacian pyramids. However, these filters are slow to evaluate and their relationship to other approaches is unclear. In this paper, we show that they are closely related to anisotropic diffusion and to bilateral filtering. Our study also leads to a variant of the bilateral filter that produces cleaner edges while retaining its speed. Building upon this result, we describe an acceleration scheme for local Laplacian filters that yields speed-ups on the order of 50x. Finally, we demonstrate how to use local Laplacian filters to alter the distribution of gradients in an image. We illustrate this property with a robust algorithm for photographic style transfer.
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