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Sigma KEE - contrastRatio
contrastRatio

appearance as argument number 1
-------------------------


(documentation contrastRatio EnglishLanguage "The contrast ratio is a property of a display system, defined as the ratio of the luminance of the brightest color (white) to that of the darkest color (black) that the system is capable of producing. A high contrast ratio is a desired aspect of any display. It has similarities with dynamic range. (from Wikipedia)") ComputingBrands.kif 3729-3733
(domain contrastRatio 1 Object) ComputingBrands.kif 3724-3724 contrastRatio 的 1 数量 是 客体instance
(domain contrastRatio 2 RealNumber) ComputingBrands.kif 3725-3725 contrastRatio 的 2 数量 是 实数instance
(instance contrastRatio BinaryPredicate) ComputingBrands.kif 3723-3723 contrastRatio二元谓语instance

appearance as argument number 2
-------------------------


(format EnglishLanguage contrastRatio "the contrast ratio of %1 is %2") ComputingBrands.kif 3727-3727
(termFormat EnglishLanguage contrastRatio "contrast ratio") ComputingBrands.kif 3726-3726

antecedent
-------------------------


(=>
    (and
        (measure ?P1
            (MeasureFn ?N1 Lumen))
        (measure ?P2
            (MeasureFn ?N2 Lumen))
        (part ?P1 ?O)
        (part ?P2 ?O)
        (not
            (equal ?P1 ?P2))
        (greaterThan ?N1 ?N2)
        (equal
            (DivisionFn ?N1 ?N2) ?R)
        (contrastRatio ?O ?R))
    (not
        (exists (?P3 ?P4 ?N3 ?N4)
            (and
                (measure ?P3
                    (MeasureFn ?N3 Lumen))
                (measure ?P4
                    (MeasureFn ?N4 Lumen))
                (part ?P3 ?O)
                (part ?P4 ?O)
                (not
                    (equal ?P3 ?P4))
                (greaterThan ?N3 ?N4)
                (greaterThan
                    (DivisionFn ?N3 ?N4) ?R)))))
ComputingBrands.kif 3735-3756


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