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Grids for Assessing Colour Appearance
Author(s) -
Pointer M. R.,
Ensell J. S.,
Bullock L. M.
Publication year - 1977
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/col.5080020308
Subject(s) - chromaticity , luminance , daylight , hue , artificial intelligence , computer vision , adaptation (eye) , mathematics , computer science , optics , chromatic adaptation , set (abstract data type) , fidelity , color space , physics , programming language , telecommunications , image (mathematics)
A technique of subjective magnitude estimation has been used to assess a set of pseudosurface colours, each having a luminance equal to half that of its adapting surround. Five observers scaled each of the colours three times in each of two adaptation conditions corresponding to daylight and tungsten light at 120 cd/m 2 . Loci of constant hue and saturation were derived in u', v' chromaticity space for daylight and tungsten light. These grids enable the appearance of a colour to be specified from a knowledge of its chromaticity coordinates and they enable such effects as colour constancy and colour fidelity to be investigated in terms of perceived colour appearance.