Brightness, not luminance, determines transition from the surface-color to the aperture-color mode for colored lights

Keiji Uchikawa, Kowa Koida, Toshihisa Meguro, Yasuki Yamauchi, Ichiro Kuriki

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Whether a color stimulus appears in the surface-color or in the aperture-color mode depends on the luminance relationship between the center color stimulus and its surround. We investigated how chromaticity of a color stimulus affected the luminance level at which the appearance of the stimulus changed from the surface-color to the aperture-color mode. Mode estimation points were obtained for 10-cd/m2 color stimuli with different chromaticities presented in the center of a white surround of variable luminance. The color stimuli tended to appear in the aperture-color mode as purity increased, similarly to the increase of the brightness-to-luminance ratio for equal-luminance colors. It was also found that the mode-transition sensitivity function was similar in shape to the brightness sensitivity function for 440-660-m monochromatic light. Our results indicate that brightness is a determining factor for mode transition between the surface-color and the aperture-color modes. We discuss a possible assumption for relationships between brightness and lightness limits of a surface color.

Original languageEnglish
Pages (from-to)737-746
Number of pages10
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume18
Issue number4
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

ASJC Scopus subject areas

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

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