Fuzzy Regression for Perceptual Image Quality Assessment

Subjective image quality assessment (IQA) is fundamentally important in various image processing applications such as image/video compression and image reconstruction, since it directly indicates the actual human perception of an image. However, fuzziness due to human judgment is neglected in curren...

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Main Authors: Chan, Kit Yan, Engelke, U.
Format: Journal Article
Published: Elsevier B. V. 2015
Subjects:
Online Access:http://hdl.handle.net/20.500.11937/11495
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author Chan, Kit Yan
Engelke, U.
author_facet Chan, Kit Yan
Engelke, U.
author_sort Chan, Kit Yan
building Curtin Institutional Repository
collection Online Access
description Subjective image quality assessment (IQA) is fundamentally important in various image processing applications such as image/video compression and image reconstruction, since it directly indicates the actual human perception of an image. However, fuzziness due to human judgment is neglected in current methodologies for predicting subjective IQA, where the fuzziness indicates assessment uncertainty. In this article, we propose a fuzzy regression method that accounts for fuzziness introduced through human judgment and the limitations of widely-used psychometric quality scales. We demonstrate how fuzzy regression models provide fuzziness information regarding subjective IQA. We benchmark the fuzzy regression method against the commonly used explicit modeling method for subjective IQA namely statistical regression by considering three real situations involving subjective image quality experiments where: (a) the number of participants is insufficient; (b) an insufficient amount of data is used for modelling; and (c) variant fuzziness is caused by human judgment. Results indicate that fuzzy regression models achieve more effective data fitting and better generalization capability when predicting subjective IQA under different types and levels of image distortion.
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spelling curtin-20.500.11937-114952017-09-13T15:41:41Z Fuzzy Regression for Perceptual Image Quality Assessment Chan, Kit Yan Engelke, U. subjective image quality assessment mean opinion scores (MOS) Fuzzy regression objective image quality metric Subjective image quality assessment (IQA) is fundamentally important in various image processing applications such as image/video compression and image reconstruction, since it directly indicates the actual human perception of an image. However, fuzziness due to human judgment is neglected in current methodologies for predicting subjective IQA, where the fuzziness indicates assessment uncertainty. In this article, we propose a fuzzy regression method that accounts for fuzziness introduced through human judgment and the limitations of widely-used psychometric quality scales. We demonstrate how fuzzy regression models provide fuzziness information regarding subjective IQA. We benchmark the fuzzy regression method against the commonly used explicit modeling method for subjective IQA namely statistical regression by considering three real situations involving subjective image quality experiments where: (a) the number of participants is insufficient; (b) an insufficient amount of data is used for modelling; and (c) variant fuzziness is caused by human judgment. Results indicate that fuzzy regression models achieve more effective data fitting and better generalization capability when predicting subjective IQA under different types and levels of image distortion. 2015 Journal Article http://hdl.handle.net/20.500.11937/11495 10.1016/j.engappai.2015.04.007 Elsevier B. V. fulltext
spellingShingle subjective image quality assessment
mean opinion scores (MOS)
Fuzzy regression
objective image quality metric
Chan, Kit Yan
Engelke, U.
Fuzzy Regression for Perceptual Image Quality Assessment
title Fuzzy Regression for Perceptual Image Quality Assessment
title_full Fuzzy Regression for Perceptual Image Quality Assessment
title_fullStr Fuzzy Regression for Perceptual Image Quality Assessment
title_full_unstemmed Fuzzy Regression for Perceptual Image Quality Assessment
title_short Fuzzy Regression for Perceptual Image Quality Assessment
title_sort fuzzy regression for perceptual image quality assessment
topic subjective image quality assessment
mean opinion scores (MOS)
Fuzzy regression
objective image quality metric
url http://hdl.handle.net/20.500.11937/11495