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Proceedings Paper

Perceptual color difference metric including a CSF based on the perception threshold
Author(s): Vincent Rosselli; Mohamed-Chaker Larabi; Christine Fernandez-Maloigne
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Paper Abstract

The study of the Human Visual System (HVS) is very interesting to quantify the quality of a picture, to predict which information will be perceived on it, to apply adapted tools ... The Contrast Sensitivity Function (CSF) is one of the major ways to integrate the HVS properties into an imaging system. It characterizes the sensitivity of the visual system to spatial and temporal frequencies and predicts the behavior for the three channels. Common constructions of the CSF have been performed by estimating the detection threshold beyond which it is possible to perceive a stimulus. In this work, we developed a novel approach for spatio-chromatic construction based on matching experiments to estimate the perception threshold. It consists in matching the contrast of a test stimulus with that of a reference one. The obtained results are quite different in comparison with the standard approaches as the chromatic CSFs have band-pass behavior and not low pass. The obtained model has been integrated in a perceptual color difference metric inspired by the s-CIELAB. The metric is then evaluated with both objective and subjective procedures.

Paper Details

Date Published: 28 January 2008
PDF: 10 pages
Proc. SPIE 6808, Image Quality and System Performance V, 68080I (28 January 2008); doi: 10.1117/12.766623
Show Author Affiliations
Vincent Rosselli, Univ. of Poitiers (France)
Mohamed-Chaker Larabi, Univ. of Poitiers (France)
Christine Fernandez-Maloigne, Univ. of Poitiers (France)

Published in SPIE Proceedings Vol. 6808:
Image Quality and System Performance V
Susan P. Farnand; Frans Gaykema, Editor(s)

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