Objectively Evaluating High-Dynamic-Range and Wide-Color-Gamut Color Accuracy

Color accuracy plays a vital role in the motion picture and television industry where it is analyzed all the way from lighting during production, through compression, to television sets in the home. The most common pixel-based metric used for evaluating color quality is ΔE2000. This metric was designed using standard-dynamic-range signals and is based upon the perceptually non-uniform L*a*b* color space. It has not yet been well tested or optimized for high-dynamic-range and wide-color-gamut signals. In this paper, we will present an extension to existing color difference data sets that includes data from high-dynamic-range and wide-color-gamut displays. From these results, we propose an alternative color differencing metric, ΔICTCP, which improves the performance and efficiency of objectively evaluating color accuracy.

Published

2016-10

Content type

Original Research

Keywords

Color difference metric, high-dynamic-range, wide-color-gamut, ΔE2000, ICTCP

DOI

10.5594/M001711

ISBN

978-1-61482-957-7