luminance contrast การใช้

• In addition, human vision is sensitive to luminance contrast ratio.
• Here, luminance contrast is used as an example, but the formulas can also be applied to other physical quantities.
• The duration of suppression in both methods is maximized if the image being suppressed has low luminance contrast or a low spatial frequency spectrum.
• The patterns are usually high in luminance contrast ( bright flashes of light alternating with darkness, or white bars against a black background ).
• The " luminance contrast " is the ratio between the higher luminance, L H, and the lower luminance, L L, that define the feature to be detected.
• Researchers look at how luminance contrasts are spatially distributed in an image : the luminance contrasts are highly correlated the closer they are in measurable distance and less correlated the farther apart the pixels are.
• Researchers look at how luminance contrasts are spatially distributed in an image : the luminance contrasts are highly correlated the closer they are in measurable distance and less correlated the farther apart the pixels are.
• Ordinary people have better reading performance using high-frequency ( 20 kHz  60 kHz ) electronic ballasts than electromagnetic ballasts, although the effect was large only for the case of luminance contrast.
• That the wavelength discrimination and luminance contrast sensitivity measured in monkeys were very similar to those obtained for human observers, allowed De Valois to posit the relevance of his electrophysiological recordings in macaque monkeys to cortical processing in the early stages of the human visual system.