Search Results for author: Ondřej Mokrý

Found 7 papers, 5 papers with code

On the Use of Autoregressive Methods for Audio Inpainting

1 code implementation7 Mar 2024 Ondřej Mokrý, Pavel Rajmic

The paper presents an evaluation of popular audio inpainting methods based on autoregressive modelling, namely, extrapolation-based and Janssen methods.

Audio inpainting

Improving DCE-MRI through unfolded low-rank + sparse optimisation

no code implementations12 Dec 2023 Ondřej Mokrý, Jiří Vitouš, Pavel Rajmic, Radovan Jiřík

A method for perfusion imaging with DCE-MRI is developed based on two popular paradigms: the low-rank + sparse model for optimisation-based reconstruction, and the deep unfolding.

Multiple Hankel matrix rank minimization for audio inpainting

no code implementations31 Mar 2023 Pavel Záviška, Pavel Rajmic, Ondřej Mokrý

Sasaki et al. (2018) presented an efficient audio declipping algorithm, based on the properties of Hankel-structure matrices constructed from time-domain signal blocks.

Audio declipping Audio inpainting

Algorithms for audio inpainting based on probabilistic nonnegative matrix factorization

2 code implementations28 Jun 2022 Ondřej Mokrý, Paul Magron, Thomas Oberlin, Cédric Févotte

First, we treat the missing samples as latent variables, and derive two expectation-maximization algorithms for estimating the parameters of the model, depending on whether we formulate the problem in the time- or time-frequency domain.

Audio inpainting

Audio declipping performance enhancement via crossfading

1 code implementation7 Apr 2021 Pavel Záviška, Pavel Rajmic, Ondřej Mokrý

Some audio declipping methods produce waveforms that do not fully respect the physical process of clipping, which is why we refer to them as inconsistent.

Audio declipping

Approximal operator with application to audio inpainting

1 code implementation4 May 2020 Ondřej Mokrý, Pavel Rajmic

In their recent evaluation of time-frequency representations and structured sparsity approaches to audio inpainting, Lieb and Stark (2018) have used a particular mapping as a proximal operator.

Audio inpainting

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