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dc.contributor.authorKumcu, A.*
dc.contributor.authorPlatisa, L.*
dc.contributor.authorChen, H.*
dc.contributor.authorGislason-Lee, Amber J.*
dc.contributor.authorDavies, A.G.*
dc.contributor.authorSchelkens, P.*
dc.contributor.authorTaeymans, Y.*
dc.contributor.authorPhilips, W.*
dc.date.accessioned2019-04-17T11:32:38Z
dc.date.available2019-04-17T11:32:38Z
dc.date.issued2015-03
dc.identifier.citationKumcu A, Platisa L, Chen H et al (2015) Selecting stimuli parameters for video quality assessment studies based on perceptual similarity distances. In: Proceedings of SPIE 9399, Image Processing: Algorithms and Systems XIII. SPIE Electronic Imaging. 08-12 Feb 2015, San Francisco, California, USA. Society of Photo-Optical Instrumentation Engineers (SPIE).en_US
dc.identifier.urihttp://hdl.handle.net/10454/16977
dc.descriptionYesen_US
dc.description.abstractThis work presents a methodology to optimize the selection of multiple parameter levels of an image acquisition, degradation, or post-processing process applied to stimuli intended to be used in a subjective image or video quality assessment (QA) study. It is known that processing parameters (e.g. compression bit-rate) or techni- cal quality measures (e.g. peak signal-to-noise ratio, PSNR) are often non-linearly related to human quality judgment, and the model of either relationship may not be known in advance. Using these approaches to select parameter levels may lead to an inaccurate estimate of the relationship between the parameter and subjective quality judgments – the system’s quality model. To overcome this, we propose a method for modeling the rela- tionship between parameter levels and perceived quality distances using a paired comparison parameter selection procedure in which subjects judge the perceived similarity in quality. Our goal is to enable the selection of evenly sampled parameter levels within the considered quality range for use in a subjective QA study. This approach is tested on two applications: (1) selection of compression levels for laparoscopic surgery video QA study, and (2) selection of dose levels for an interventional X-ray QA study. Subjective scores, obtained from the follow-up single stimulus QA experiments conducted with expert subjects who evaluated the selected bit-rates and dose levels, were roughly equidistant in the perceptual quality space - as intended. These results suggest that a similarity judgment task can help select parameter values corresponding to desired subjective quality levels.en_US
dc.description.sponsorshipParts of this work were performed within the Telesurgery project (co-funded by iMinds, a digital research institute founded by the Flemish Government; project partners are Unilabs Teleradiology, SDNsquare and Barco, with project support from IWT) and the PANORAMA project (co-funded by grants from Belgium, Italy, France, the Netherlands, the United Kingdom, and the ENIAC Joint Undertaking).en_US
dc.language.isoenen_US
dc.rights(c) 2015, Society of Photo-Optical Instrumentation Engineers (SPIE). This is an author produced version of a paper published in Proceedings of SPIE 9399, Image Processing: Algorithms and Systems XIII.en_US
dc.subjectSubjective video quality assessmenten_US
dc.subjectMultidimensional scalingen_US
dc.subjectImage similarityen_US
dc.subjectDifference scalingen_US
dc.subjectVideo compressionen_US
dc.subjectLaparoscopyen_US
dc.subjectInterventional x-rayen_US
dc.titleSelecting stimuli parameters for video quality studies based on perceptual similarity distancesen_US
dc.status.refereedYesen_US
dc.date.Accepted2015
dc.date.application2015-03-16
dc.typeConference paperen_US
dc.type.versionAccepted manuscripten_US
dc.identifier.doihttps://doi.org/10.1117/12.2083431
refterms.dateFOA2019-04-17T11:32:38Z


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