Rehabilitating the colorchecker dataset for illuminant estimation

Hemrit, Ghalia, Finlayson, Graham D., Gijsenij, Arjan, Gehler, Peter, Bianco, Simone, Funt, Brian, Drew, Mark and Shi, Lilong (2018) Rehabilitating the colorchecker dataset for illuminant estimation. In: CIC 2018 - 26th Color and Imaging Conference. Society for Imaging Science and Technology, CAN, pp. 350-353. ISBN 9780892083374

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Abstract

In a previous work, it was shown that there is a curious problem with the benchmark ColorChecker dataset for illuminant estimation. To wit, this dataset has at least 3 different sets of ground-truths. Typically, for a single algorithm a single ground-truth is used. But then different algorithms, whose performance is measured with respect to different ground-truths, are compared against each other and then ranked. This makes no sense. We show in this paper that there are also errors in how each ground-truth set was calculated. As a result, all performance rankings based on the ColorChecker dataset - and there are scores of these - are inaccurate. In this paper, we re-generate a new 'recommended' ground-truth set based on the calculation methodology described by Shi and Funt. We then review the performance evaluation of a range of illuminant estimation algorithms. Compared with the legacy ground-truths, we find that the difference in how algorithms perform can be large, with many local rankings of algorithms being reversed. Finally, we draw the readers attention to our new 'open' data repository which, we hope, will allow the ColorChecker set to be rehabilitated and once again become a useful benchmark for illuminant estimation algorithms.

Item Type: Book Section
Uncontrolled Keywords: computer vision and pattern recognition,electronic, optical and magnetic materials,atomic and molecular physics, and optics ,/dk/atira/pure/subjectarea/asjc/1700/1707
Faculty \ School: Faculty of Science > School of Chemistry
Faculty of Science > School of Computing Sciences
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Depositing User: LivePure Connector
Date Deposited: 14 May 2019 14:30
Last Modified: 22 Apr 2020 11:21
URI: https://ueaeprints.uea.ac.uk/id/eprint/70993
DOI: 10.2352/ISSN.2169-2629.2018.26.350

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