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Color constancy in visual scene perception

  • Christian Balkenius
  • Anders J Johansson
  • Anna Balkenius
Publishing year: 2003
Language: English
Publication/Series: LUCS Studies
Volume: 98
Document type: Report
Publisher: Lund University Cognitive Science

Abstract english

In RoboCup, all objects in the game are color coded to

allow easy segmentation and identification. However, color vision is very sensitive to the exact color of the illumination which makes the identification task much harder than is often anticipated. Algorithms that work

in the lab in fluorescent light may not function at all in an actual game where incandescent lights are used.

This article is intended as a short tutorial on color vision and demonstrates a method for retrieving the color of image patches independently of the color of the illumination. The computational scheme is tested on a set of images of orange balls on a green background with varying illumination.


  • Computer Vision and Robotics (Autonomous Systems)


  • Neuronano Research Center (NRC)
  • ISSN: 1101-8453
E-mail: anna [dot] balkenius [at] biol [dot] lu [dot] se


Functional zoology

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Research group

Lund Vision Group