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Achromatic Induction of Contrast Threshold in Spatial Frequency Modulation

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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.
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Document Type: Research Article

Publication date: January 1, 2004

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  • Started in 2002 and merged with the Color and Imaging Conference (CIC) in 2014, CGIV covered a wide range of topics related to colour and visual information, including color science, computational color, color in computer graphics, color reproduction, volor vision/psychophysics, color image quality, color image processing, and multispectral color science. Drawing papers from researchers, scientists, and engineers worldwide, DGIV offered attendees a unique experience to share with colleagues in industry and academic, and on national and international standards committees. Held every year in Europe, DGIV papers were more academic in their focus and had high student participation rates.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual papers for details.

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