TY  - JOUR
AU  - C. Alejandro Parraga
AU  - Robert Benavente
AU  - Maria Vanrell
AU  - Ramon Baldrich
PY  - 2009//
TI  - Psychophysical measurements to model inter-colour regions of colour-naming space
JO  - Journal of Imaging Science and Technology
SP  - 031106 (8 pages)
VL  - 53
IS  - 3
KW  - image processing
KW  - Analysis
N2  - JCR Impact Factor 2009: 0.391In this paper, we present a fuzzy-set of parametric functions which segment the CIE lab space into eleven regions which correspond to the group of common universal categories present in all evolved languages as identified by anthropologists and linguists. The set of functions is intended to model a color-name assignment task by humans and differs from other models in its emphasis on the inter-color boundary regions, which were explicitly measured by means of a psychophysics experiment. In our particular implementation, the CIE lab space was segmented into eleven color categories using a Triple Sigmoid as the fuzzy sets basis, whose parameters are included in this paper. The model’s parameters were adjusted according to the psychophysical results of a yes/no discrimination paradigm where observers had to choose (English) names for isoluminant colors belonging to regions in-between neighboring categories. These colors were presented on a calibrated CRT monitor (14-bit x 3 precision). The experimental results show that inter- color boundary regions are much less defined than expected and color samples other than those near the most representatives are needed to define the position and shape of boundaries between categories. The extended set of model parameters is given as a table.
UR  - http://miprcv.prhlt.upv.es/index.php?option=com_jombib&task=showbib&id=464&Itemid=61
N1  - CIC
ID  - C. Alejandro Parraga2009
ER  -