Positive and negative polarity contrast sensitivity measuring app
نویسندگان
چکیده
منابع مشابه
Positive and negative polarity contrast sensitivity measuring app
Contrast sensitivity (CS) quantifies an observer's ability to detect the smallest (threshold) luminance difference between a target and its surrounding. In clinical settings, printed letter contrast charts are commonly used, and the contrast of the letter stimuli is specified by the Weber contrast definition. Those paper-printed charts use negative polarity contrast (NP, dark letters on bright ...
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Contrast sensitivity defines the threshold between the visible and invisible, which has obvious significance for basic and clinical vision science. Fechner's 1860 review reported that threshold contrast is 1% for a remarkably wide range of targets and conditions. While printed charts are still in use, computer testing is becoming more popular because it offers efficient adaptive measurement of ...
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ژورنال
عنوان ژورنال: Electronic Imaging
سال: 2016
ISSN: 2470-1173
DOI: 10.2352/issn.2470-1173.2016.16.hvei-122