SILO: Mario Figueiredo
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Date: 3/2/22
Title: Three Short Stories About Image Denoising
Abstract: In this talk, I will review three recent proposals in the area of
patch-based image denoising. The first one is a simple post-processing
technique for Poisson denoisers, based on an elementary application of
classical linear minimum mean squared error (LMMSE) estimation, and
which is able to squeeze a few extra tenths of dB of ISNR from several
state-of-the-art Poisson denoisers and to produce better-looking
images. The second story is about how external non-local means (NLM)
denoising can be seen as an importance sampling approach to computing
MMSE patch estimates, which opens the door to using NLM with arbitrary
noise models. The third and final part of the talk is about denoising
interferometric (phase) images using multi-resolution windowed Fourier
filtering, guided by Stein's unbiased risk estimate (SURE),
outperforming previous state-of-the-art methods for this problem.
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