Dissimilarity of yellow-blue surfaces under neutral light sources differing in intensity: Separate contributions of light intensity and chroma

Rumi Tokunaga, Alexander D. Logvinenko, Laurence T. Maloney

Research output: Contribution to journalArticle

Abstract

Observers viewed two side-by-side arrays each of which contained three yellow Munsell papers, three blue, and one neutral Munsell. Each array was illuminated uniformly and independently of the other. The neutral light source intensities were 1380, 125, or 20 lux. All six possible combinations of light intensities were set as illumination conditions. On each trial, observers were asked to rate the dissimilarity between each chip in one array and each chip in the other by using a 30-point scale. Each pair of surfaces in each illumination condition was judged five times. We analyzed this data using non-metric multi-dimensional scaling to determine how light intensity and surface chroma contributed to dissimilarity and how they interacted. Dissimilarities were captured by a three-dimensional configuration in which one dimension corresponded to differences in light intensity.

Original languageEnglish (US)
Pages (from-to)395-398
Number of pages4
JournalVisual neuroscience
Volume25
Issue number3
DOIs
StatePublished - May 2008

Keywords

  • Colour vision
  • Dissimilarity
  • Multidimensional scaling
  • Munsell papers
  • Surface-brightness

ASJC Scopus subject areas

  • Physiology
  • Sensory Systems

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