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Correspondence Between CIELAB and CIELUV Color Differences
Author(s) -
Ohta Noboru
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.5080020407
Subject(s) - color difference , mathematics , color space , space (punctuation) , range (aeronautics) , mathematical analysis , artificial intelligence , computer science , materials science , enhanced data rates for gsm evolution , composite material , image (mathematics) , operating system
The CIE presently recommends two uniform color spaces, the CIE 1976 (L*u*v*)‐space (CIELUV) and the CIE 1976 (L*a*b*)‐space (CIELAB). With each of these spaces is associated a color‐difference formula. Color differences calculated by one formula cannot readily be converted to color differences calculated by the other formula. A conversion factor such as ρ = ΔE uv */ΔE ab * cannot be determined uniquely. However, for any given location in color space, it is possible to determine a range, ρ min ⩽ ρ ⩽ ρ max , within which ρ must lie. Lines of constant ρ min and ρ max can be plotted in (L*a*b*)‐space which indicate the range of ρ in (L*u*v*)‐space.