luminance contrast

luminance contrast

The relationship between the luminance of an object and the luminance of the immediate background.
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reported that under conditions of high temporal frequency (15 Hz) luminance contrast of icVEP (16% positive contrast), 15 OAG patients and 14 normal observers had a sensitivity of 73.3% and a specificity of 100%,[17] but one half of the patients had advanced OAG, including juvenile and pigmentary OAG.
The luminance contrast of the symbols against the background still existed, but the comparison of the colors changed.
In this context, it is necessary to conduct further research seeking to refine the sample characteristics to establish intra and more homogeneous parameters between groups and thus further elucidate the effect of chronic alcohol use on visual perception of achromatic luminance contrast. Although the effects of moderate or acute alcohol consumption on visual CS are described by several studies reporting alterations in medium and high frequencies with greater damage in the range of spatial frequencies of 3.0 and 6.0 cpd (Andre, 1996; Nicholson, Andre, Tyrrell, Wang, & Leibowitz 1995; Weschke & Niedeggen 2012;Zhuang et al., 2012).
It is widely believed that the human visual system (HVS) is more sensitive to local luminance contrast than pixel values or luminance.
Confusion colours must be carefully selected and luminance contrast clues eliminated.
Here we adopt the hue contrast, saturation contrast and the luminance contrast to identify the outline features of PGS.
Therefore, an analysis of these contrasting results and the frequency-specific effect of aging on contrast sensitivity (Figure 2) might show that human aging distinctively affects luminance contrast processing in the magno and parvocellular pathways.
1997; Carlson and Hawkins 2002; Holick and Carlson 2002), the luminance contrast between the sign background and the characters (Schnell et al.
So colour or orientation contrast; luminance contrast in terms of light and dark things that pop out.
Spatial luminance contrast sensitivity tests of macaque and human observers.