Physical-based optimization for non-physical image dehazing methods

Vazquez-Corral, Javier, Finlayson, Graham D. and Bertalmío, Marcelo (2020) Physical-based optimization for non-physical image dehazing methods. Optics Express, 28 (7). pp. 9327-9339. ISSN 1094-4087

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Images captured under hazy conditions (e.g. fog, air pollution) usually present faded colors and loss of contrast. To improve their visibility, a process called image dehazing can be applied. Some of the most successful image dehazing algorithms are based on image processing methods but do not follow any physical image formation model, which limits their performance. In this paper, we propose a post-processing technique to alleviate this handicap by enforcing the original method to be consistent with a popular physical model for image formation under haze. Our results improve upon those of the original methods qualitatively and according to several metrics, and they have also been validated via psychophysical experiments. These results are particularly striking in terms of avoiding over-saturation and reducing color artifacts, which are the most common shortcomings faced by image dehazing methods.

Item Type: Article
Uncontrolled Keywords: framework
Faculty \ School: Faculty of Science > School of Computing Sciences
UEA Research Groups: Faculty of Science > Research Groups > Colour and Imaging Lab
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Depositing User: LivePure Connector
Date Deposited: 26 Mar 2020 01:30
Last Modified: 09 Mar 2024 01:21
DOI: 10.1364/OE.383799


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