Immediate colour constancy
نویسندگان
چکیده
منابع مشابه
Immediate colour constancy.
Colour constancy is traditionally interpreted as the stable appearance of the colour of a surface despite changes in the spectral composition of the illumination. When colour constancy has been assessed quantitatively, however, by observers making matches between surfaces illuminated by different sources, its completeness has been found to be poor. An alternative operational approach to colour ...
متن کاملColour constancy
What is colour constancy? Colour constancy is the tendency of objects to appear the same colour even under changing illumination. A yellow banana appears yellow whether you see it in the tungsten light of the kitchen or in sunlight outdoors. Under these different conditions, the banana reflects very different light spectra to your eyes, but you see instead its unchanging material properties. Th...
متن کاملFour issues concerning colour constancy and relational colour constancy
Four issues concerning colour constancy and relational colour constancy are briefly considered: (1) the equivalence of colour constancy and relational colour constancy; (2) the dependence of relational colour constancy on ratios of cone excitations due to light from different reflecting surfaces, and the association of such ratios with von Kries' coefficient rule; (3) the contribution of chroma...
متن کاملMultispectral Colour Constancy
Does extending the number of channels from the 3 RGB sensors of a colour camera to 6 or 9 using a multispectral camera enhance the performance of illumination-estimation algorithms? Experiments are conducted with a variety of colour constancy algorithms (Maloney-Wandell, Chromagenic, Greyworld, Max RGB, and a Maloney-Wandell extension) measuring their performance as a function of the number of ...
متن کاملReflections on colour constancy.
F or more than two centuries, scientists and artists have come up with a range of ways to demonstrate that the wavelength composition over a whole scene can affect how we perceive the colour of the individual parts of that scene. The proportion of light of each wavelength reflected from an object can be highly beneficial in detecting or recognizing objects 1. However, to make use of that invari...
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ژورنال
عنوان ژورنال: Ophthalmic and Physiological Optics
سال: 2007
ISSN: 0275-5408,1475-1313
DOI: 10.1111/j.1475-1313.1992.tb00280.x