Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces
High Dynamic Range (HDR) and Wide Color Gamut (WCG) screens are able to render brighter and darker pixels with more vivid colors than ever. To assess the quality of images and videos displayed on these screens, new quality assessment metrics adapted to this new content are required. Because most SDR...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-01-01
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| Series: | Journal of Imaging |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2313-433X/5/1/18 |
| _version_ | 1811278350137688064 |
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| author | Maxime Rousselot Olivier Le Meur Rémi Cozot Xavier Ducloux |
| author_facet | Maxime Rousselot Olivier Le Meur Rémi Cozot Xavier Ducloux |
| author_sort | Maxime Rousselot |
| collection | DOAJ |
| description | High Dynamic Range (HDR) and Wide Color Gamut (WCG) screens are able to render brighter and darker pixels with more vivid colors than ever. To assess the quality of images and videos displayed on these screens, new quality assessment metrics adapted to this new content are required. Because most SDR metrics assume that the representation of images is perceptually uniform, we study the impact of three uniform color spaces developed specifically for HDR and WCG images, namely, I C t C p , J z a z b z and H D R - L a b on 12 SDR quality assessment metrics. Moreover, as the existing databases of images annotated with subjective scores are using a standard gamut, two new HDR databases using WCG are proposed. Results show that MS-SSIM and FSIM are among the most reliable metrics. This study also highlights the fact that the diffuse white of HDR images plays an important role when adapting SDR metrics for HDR content. Moreover, the adapted SDR metrics does not perform well to predict the impact of chrominance distortions. |
| first_indexed | 2024-04-13T00:34:11Z |
| format | Article |
| id | doaj.art-32f7b1ba7b2a4010aeb072b9e717a277 |
| institution | Directory Open Access Journal |
| issn | 2313-433X |
| language | English |
| last_indexed | 2024-04-13T00:34:11Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Imaging |
| spelling | doaj.art-32f7b1ba7b2a4010aeb072b9e717a2772022-12-22T03:10:23ZengMDPI AGJournal of Imaging2313-433X2019-01-01511810.3390/jimaging5010018jimaging5010018Quality Assessment of HDR/WCG Images Using HDR Uniform Color SpacesMaxime Rousselot0Olivier Le Meur1Rémi Cozot2Xavier Ducloux3Harmonic Inc., ZAC des Champs Blancs, 57 Rue Clément Ader, 35510 Cesson-Sévigné, FranceInstitut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Campus Universitaire de Beaulieu, 35042 Rennes CEDEX, FranceInstitut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Campus Universitaire de Beaulieu, 35042 Rennes CEDEX, FranceHarmonic Inc., ZAC des Champs Blancs, 57 Rue Clément Ader, 35510 Cesson-Sévigné, FranceHigh Dynamic Range (HDR) and Wide Color Gamut (WCG) screens are able to render brighter and darker pixels with more vivid colors than ever. To assess the quality of images and videos displayed on these screens, new quality assessment metrics adapted to this new content are required. Because most SDR metrics assume that the representation of images is perceptually uniform, we study the impact of three uniform color spaces developed specifically for HDR and WCG images, namely, I C t C p , J z a z b z and H D R - L a b on 12 SDR quality assessment metrics. Moreover, as the existing databases of images annotated with subjective scores are using a standard gamut, two new HDR databases using WCG are proposed. Results show that MS-SSIM and FSIM are among the most reliable metrics. This study also highlights the fact that the diffuse white of HDR images plays an important role when adapting SDR metrics for HDR content. Moreover, the adapted SDR metrics does not perform well to predict the impact of chrominance distortions.http://www.mdpi.com/2313-433X/5/1/18image qualityHigh Dynamic Rangecolor gamutimage representationimage analysisimage processing |
| spellingShingle | Maxime Rousselot Olivier Le Meur Rémi Cozot Xavier Ducloux Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces Journal of Imaging image quality High Dynamic Range color gamut image representation image analysis image processing |
| title | Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces |
| title_full | Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces |
| title_fullStr | Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces |
| title_full_unstemmed | Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces |
| title_short | Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces |
| title_sort | quality assessment of hdr wcg images using hdr uniform color spaces |
| topic | image quality High Dynamic Range color gamut image representation image analysis image processing |
| url | http://www.mdpi.com/2313-433X/5/1/18 |
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