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Analyzing the metrics of the perceptual space in a new multistage physiological colour vision model
Author(s) -
Chorro Elísabet,
MartínezVerdú Francisco Miguel,
de Fez Dolores,
Capilla Pascual,
Luque Maria José
Publication year - 2009
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.20524
Subject(s) - mathematics , hue , space (punctuation) , artificial intelligence , brightness , metric (unit) , perception , colour difference , pattern recognition (psychology) , computer science , computer vision , optics , engineering , physics , operations management , neuroscience , biology , operating system
In this work, the metric of a new multistage colour vision model, ATTD05, is assessed and a new colour difference formula is suggested. Firstly, the uniformity of the ATTD05 colour space was compared with that of CIECAM02 for some Munsell samples, because if the model yields a uniform perceptual space, we will be able to implement a colour difference formula as a Euclidian distance between two points. Secondly, we developed a new space based on the perceptual descriptors of the model: brightness, hue, colourfulness, and saturation. After that, we calculated the free parameters of the space that better fit the measured and experimental data of two datasets (small‐magnitude and large‐magnitude colour differences), by minimizing the performance factor (PF/3). Finally, we compare colour differences calculated for ATTD05 and for other models. The PF/3 and the STRESS parameters were used to decide which model predicts better perceptual differences and, therefore, which model was the more uniform. © 2009 Wiley Periodicals, Inc. Col Res Appl, 34, 359–366, 2009