Hue Coefficient of Equivalent Lightness Formulas
نویسندگان
چکیده
منابع مشابه
Lightness compression and hue changes.
Two experiments were performed to relate the Bezold-Brücke (B-B) and lightness compression effects. The first used a calibrated screen to present an achromatic luminance staircase. In addition, it reproduced, the methodology and the essential aspects the lightness compression effect discovered by Cataliotti and Gilchrist (1995). That is, observers perceived a truncated grey scale (from white to...
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For uniform meshes it is shown that any linear fc-step formula can be formulated so that only k values need to be saved between steps. By saving additional m values it is possible to construct local polynomial approximations of degree k + m — 1, which can be used as predictor formulas. Different polynomial bases lead to different equivalent forms of multistep formulas. In particular, local mono...
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Circumscription is a way of using classical logic in order to modelize rules with exceptions and implicit knowledge. Formula circumscription is easier to use in order to modelize a given situation. We describe when two sets of formulas give the same result when circumscribed, introducing two kinds of equivalence. For ordinary equivalence, the two sets give the same circumscription, and for the ...
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Visual attention is used to select part of the visual array for higher-level processing. Visual selection can be based on spatial location, but it has also been demonstrated that multiple locations can be selected simultaneously on the basis of a visual feature such as color. One task that has been used to demonstrate feature-based attention is the judgement of the symmetry of simple four-color...
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Using surface colours as stimuli, the present research was aimed at the two following goals: (1) To determine the chromatic angles related to categorical effects type B-B (Bezold-Brücke). (2) To determine the colourimetric characteristics compatible with each Spanish colour basic category. To get these goals the full set of tiles included in the NCS (Natural Colour System) was used in a monolex...
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ژورنال
عنوان ژورنال: Journal of the Illuminating Engineering Institute of Japan
سال: 1994
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1980.78.10_511