Whiteness boundary for surface colors

Yuzhao Wang, Minchen Wei, Ming Ronnier Luo

Research output: Journal article publicationConference articleAcademic researchpeer-review


A psychophysical experiment was conducted to investigate the whiteness boundary for surface colors. Forty-four color normal observers evaluated the whiteness appearance of 88 color samples using a forced-choice and a magnitude of estimation method under four lighting conditions (i.e., 3000, 4000, 5000, and 6500K) whose spectral power distributions were carefully designed to have strong violet radiation, create obvious blue appearances for the samples with FWAs. The data collected was combined with those from the two recent studies to fit ellipoides in color spaces to define the whiteness boundary for each CCT levels. It was found that the whiteness boundaries are different for different CCT levels. Samples that have a hue of blue and high chroma simultaneously were still judged as white under the 3000K illumination.
Original languageEnglish
Pages (from-to)98-102
Number of pages5
JournalFinal Program and Proceedings - IS and T/SID Color Imaging Conference
Issue number25 - September
Publication statusPublished - 1 Jan 2017
Event25th Color and Imaging Conference: Color Science and Engineering Systems, Technologies, and Applications, CIC 2017 - Lillehammer, Norway
Duration: 11 Sep 201715 Sep 2017

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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