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Volume: 32 | Article ID: art00005
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Comparing a spatial extension of ICTCP color representation with S-CIELAB and other recent color metrics for HDR and WCG quality assessment
  DOI :  10.2352/ISSN.2470-1173.2020.15.COLOR-162  Published OnlineJanuary 2020
Abstract

Content created in High Dynamic Range (HDR) and Wide Color Gamut (WCG) is becoming more ubiquitous, driving the need for reliable tools for evaluating the quality across the imaging ecosystem. One of the simplest techniques to measure the quality of any video system is to measure the color errors. The traditional color difference metrics such as ΔE00 and the newer HDR specific metrics such as ΔEZ and ΔEITP compute color difference on a pixel-by-pixel basis which do not account for the spatial effects (optical) and active processing (neural) done by the human visual system. In this work, we improve upon the per-pixel ΔEITP color difference metric by performing a spatial extension similar to what was done during the design of S-CIELAB. We quantified the performance using four standard evaluation procedures on four publicly available HDR and WCG image databases and found that the proposed metric results in a marked improvement with subjective scores over existing per-pixel color difference metrics.

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Anustup Choudhury, Scott Daly, "Comparing a spatial extension of ICTCP color representation with S-CIELAB and other recent color metrics for HDR and WCG quality assessmentin Proc. IS&T Int’l. Symp. on Electronic Imaging: Color Imaging XXV: Displaying, Processing, Hardcopy, and Applications,  2020,  pp 162-1 - 162-10,  https://doi.org/10.2352/ISSN.2470-1173.2020.15.COLOR-162

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