Which tone-mapping operator is the best? A comparative study of perceptual quality
Cerdá Company, Xim (Universitat Autònoma de Barcelona. Departament de Ciències de la Computació)
Parraga, Carlos Alejandro (Universitat Autònoma de Barcelona. Departament de Ciències de la Computació)
Otazu Porter, Xavier (Centre de Visió per Computador (Bellaterra, Catalunya))

Fecha:	2018
Resumen:	Tone-mapping operators (TMOs) are designed to generate perceptually similar low-dynamic-range images from high-dynamic-range ones. We studied the performance of 15 TMOs in two psychophysical experiments where observers compared the digitally generated tone-mapped images to their corresponding physical scenes. All experiments were performed in a controlled environment, and the setups were designed to emphasize different image properties: in the first experiment we evaluated the local relationships among intensity levels, and in the second one we evaluated global visual appearance among physical scenes and tone-mapped images, which were presented side by side. We ranked the TMOs according to how well they reproduced the results obtained in the physical scene. Our results show that ranking position clearly depends on the adopted evaluation criteria, which implies that, in general, these tone-mapping algorithms consider either local or global image attributes but rarely both. Regarding the question of which TMO is the best, KimKautz ["Consistent tone reproduction," in Proceedings of Computer Graphics and Imaging (2008)] and Krawczyk ["Lightness perception in tone reproduction for high dynamic range images," in Proceedings of Eurographics (2005), p. 3] obtained the better results across the different experiments. We conclude that more thorough and standardized evaluation criteria are needed to study all the characteristics of TMOs, as there is ample room for improvement in future developments.
Ayudas:	Agencia Estatal de Investigación DPI2017-89867-C2-1-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-649
Nota:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Nota:	Publicat sota la llicència Open Access Publishing Agreement, específica d'Optica Publishing Group https://opg.optica.org/submit/review/pdf/CopyrightTransferOpenAccessAgreement-2022-06-27.pdf
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Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Publicado en:	Journal of the Optical Society of America. Optics, image science, and vision, Vol. 35, issue 4 (April 2018) , p. 626-638, ISSN 1084-7529

DOI: 10.1364/JOSAA.35.000626

13 p, 966.5 KB

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