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Transformations from cone responses to opponent color spaces
Author(s) -
Liu Meiyue,
Gao Cheng,
Zhang Xiaohui,
Melgosa Manuel,
Xiao Kaida,
Vázquez Daniel,
Li Changjun
Publication year - 2022
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.22732
Subject(s) - achromatic lens , cone (formal languages) , signal (programming language) , extant taxon , space (punctuation) , mathematics , scaling , function (biology) , mathematical analysis , pure mathematics , artificial intelligence , computer science , physics , geometry , optics , algorithm , evolutionary biology , biology , programming language , operating system
Abstract We have described a number of transformations by mapping the cone signal vector C , formed by LMS , to opponent space O , formed by achromatic signal O A , red‐green signal O rg , and yellow‐blue signal O yb . Two new transformations, Γ op 1and Γ op 2 , are proposed, based on the CIE 2006 spectral luminous efficiency function, V F λ , and Hurvich's opponent spectral red‐green and yellow‐blue responses, H rg λ and H yb λ , without and with constraints, respectively. Γ op 1is better than Γ op 2in terms of best fit of H rg λ and H yb λ , and both transformations improved previously proposed ones. Finally, we discuss the neutral conditions in cone space using each of the new and some of the extant transformations, as well as choosing scaling factors so that the neutral conditions in cone space are satisfied.