Lightness constancy and illumination discounting

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Contrary to the implication of the term “lightness constancy”, asymmetric lightness matching has never been found to be perfect unless the scene is highly articulated (i.e., contains a number of different reflectances). Also, lightness constancy has been found to vary for different observers, and an effect of instruction (lightness vs. brightness) has been reported. The elusiveness of lightness constancy presents a great challenge to visual science; we revisit these issues in the following experiment, which involved 44 observers in total.

Original languageEnglish
Pages (from-to)1886-1902
Number of pages17
JournalAttention, Perception and Psychophysics
Issue number6
Publication statusPublished - 1 Jun 2011


  • brightness
  • lightness
  • illumination edge
  • intrinsic images
  • colour and light
  • luminance contrast


Dive into the research topics of 'Lightness constancy and illumination discounting'. Together they form a unique fingerprint.

Cite this