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Achromatic Induction of Contrast Threshold in Spatial Frequency Modulation
E. Jafarzadehpur
S.M.P. Firoozabadi
B. Hashemi
S.M.M. Shushtarian
A. Kazemnezhad
  DOI :  10.2352/CGIV.2004.2.1.art00016  Published Online :  January 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.

Journal Title : Conference on Colour in Graphics, Imaging, and Vision
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/CGIV.2004.2.1.art00016
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E. Jafarzadehpur, S.M.P. Firoozabadi, B. Hashemi, S.M.M. Shushtarian, A. Kazemnezhad, "Achromatic Induction of Contrast Threshold in Spatial Frequency Modulation"  in 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

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Copyright © Society for Imaging Science and Technology 2004
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Conference on Colour in Graphics, Imaging, and Vision
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Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2158-6330(20040101)2004:1L.74;1-
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Articles
Achromatic Induction of Contrast Threshold in Spatial Frequency Modulation
JafarzadehpurE.
FiroozabadiS.M.P.
HashemiB.
ShushtarianS.M.M.
KazemnezhadA.
01012004
2004
1
74
76
2004
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.