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.

Applications of Isolated-Check Visual Evoked Potential in Early Stage of Open-Angle Glaucoma Patients

The luminance contrast of the symbols against the background still existed, but the comparison of the colors changed.

Stereoacuity of Black-White and Red-Green Patterns in Individuals with and without Color Deficiency

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).

Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings

It is widely believed that the human visual system (HVS) is more sensitive to local luminance contrast than pixel values or luminance.

MULTISCALE PHASE CONGRUENCY IMAGE FUSION SCHEME FOR INFRARED IMAGE AND VISIBLE IMAGE

Confusion colours must be carefully selected and luminance contrast clues eliminated.

Colour vision deficiency part 2--assessment in clinical practice

Here we adopt the hue contrast, saturation contrast and the luminance contrast to identify the outline features of PGS.

Pedestrian guiding signs optimization for airport terminal

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.

Differential effects of aging on spatial contrast sensitivity to linear and polar sine-wave gratings

In previous papers colour luminance contrast was foregoing.

Influence of colour difference over visibility in multimedia projection/Spalvu skirtumo itaka daugiaterpes projekcijos matomumui

1997; Carlson and Hawkins 2002; Holick and Carlson 2002), the luminance contrast between the sign background and the characters (Schnell et al.

Legibility of urban highway traffic signs using new retroreflective materials

So colour or orientation contrast; luminance contrast in terms of light and dark things that pop out.

New computer game to spot how blind to change are you

Spatial luminance contrast sensitivity tests of macaque and human observers.

Is the DeVries-Rose to Weber transition empirically possible with sine-wave gratings?

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