Back to articles
Articles
Volume: 2 | Article ID: art00016
Image
Achromatic Induction of Contrast Threshold in Spatial Frequency Modulation
  DOI :  10.2352/CGIV.2004.2.1.art00016  Published OnlineJanuary 2004
Abstract

Dynamic range of human visual system is one to billion. This expanded range provides a good capability for human visual system discriminate color, spatial and temporal changes in different luminous conditions. One of the psychophysical methods for evaluation of visual system function is contrast sensitivity. The contrast sensitivity function not only is used in visual system evaluation but also for image processing. The contrast sensitivity is “minimum luminance differences that is necessary for edge detection“. Three mechanisms 1- pupil size changes 2- ascending nerve activation changes and 3- photo pigment level in retina can affect the contrast sensitivity function.

Subject Areas :
Views 5
Downloads 0
 articleview.views 5
 articleview.downloads 0
  Cite this article 

E. Jafarzadehpur, S.M.P. Firoozabadi, B. Hashemi, S.M.M. Shushtarian, A. Kazemnezhad, "Achromatic Induction of Contrast Threshold in Spatial Frequency Modulationin Proc. IS&T CGIV 2004 Second European Conf. on Colour in Graphics, Imaging, and Vision,  2004,  pp 74 - 76,  https://doi.org/10.2352/CGIV.2004.2.1.art00016

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 2004
72010351
Conference on Colour in Graphics, Imaging, and Vision
conf colour graph imag vis
2158-6330
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA