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conference paper

Towards image denoising in the latent space of learning-based compression

Testolina, Michela  
•
Upenik, Evgeniy  
•
Ebrahimi, Touradj  
2021
Proceedings of SPIE
Applications of Digital Image Processing XLIV, San Diego, USA, August 1-5, 2021

In recent years, learning-based image compression has demonstrated similar or superior performance when com- pared to conventional approaches in terms of compression efficiency and visual quality. Typically, learning-based image compression takes advantage of autoencoders, which are architectures consisting of two main parts: a multi-layer neural network encoder and its dual decoder. The encoder maps the input image represented in the pixel domain to a compact representation, also known as latent space. Consequently, the decoder reconstructs the original image in the pixel domain from its latent representation, as accurately as possible. Traditionally, image processing algorithms, and in particular image denoising, are applied to images in the pixel domain before compression, and eventually in some cases as a post-processing stage after decompression. In this context, the combination of denoising operations with the autoencoder might reduce the computational cost while achieving similar performance in accuracy. In this paper, the idea of combining the image denoising task with compression is examined. In particular, the integration of denoising convolutional layers in the decoder of a learning-based compression network is investigated. Results show that, while the rate-distortion performance of the method is slightly reduced, a gain in the computational complexity can be achieved.

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Type
conference paper
DOI
10.1117/12.2597828
Author(s)
Testolina, Michela  
•
Upenik, Evgeniy  
•
Ebrahimi, Touradj  
Date Issued

2021

Publisher

SPIE

Published in
Proceedings of SPIE
Subjects

Image denoising

•

learning-based compression

•

compressed domain denoising

•

latent space

•

image processing

Note

Copyright 2021 Society of PhotoOptical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
MMSPL  
Event name
Applications of Digital Image Processing XLIV, San Diego, USA, August 1-5, 2021
Available on Infoscience
September 8, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/181174
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