Mesopic spectral sensitivity functions based on visibility and recognition contrast thresholds

  1. Géza Várady,
  2. Peter Bodrogi

Article first published online: 8 MAY 2006

DOI: 10.1111/j.1475-1313.2006.00404.x

Issue

Ophthalmic and Physiological Optics

Ophthalmic and Physiological Optics

Volume 26, Issue 3, pages 246–253, May 2006

Additional Information

How to Cite

Várady, G. and Bodrogi, P. (2006), Mesopic spectral sensitivity functions based on visibility and recognition contrast thresholds. Ophthalmic and Physiological Optics, 26: 246–253. doi: 10.1111/j.1475-1313.2006.00404.x

Author Information

  1. Colour and Multimedia Laboratory, Department of Image Processing and Neurocomputing, Faculty of Information Technology, University of Veszprém, Hungary

*Correspondence and reprint requests to: Géza Várady. Tel.: +36 88 624603; Fax: +36 88 624606. E-mail address: varadygeza@gmail.com

Publication History

  1. Issue published online: 8 MAY 2006
  2. Article first published online: 8 MAY 2006
  3. Received: 11 January 2005 Revised form: 01 August 2005 Accepted: 09 September 2005

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Keywords:

  • contrast detection threshold;
  • contrast recognition threshold;
  • mesopic;
  • photometry;
  • spectral sensitivity;
  • vision

Abstract

Human vision works in a complex way in the mesopic luminance range which is not yet clearly understood, although several important visual tasks are performed at these luminance levels. In this study, spectral data for detection visibility and recognition contrast sensitivity were obtained in visual experiments. From our data it appears that chromatic channels also influence mesopic contrast sensitivity. An achromatic model of spectral sensitivity is fitted to our experimental data and the remaining chromatic components are discussed.

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