The Visibility of Targets: Discs VS Gratings
Abstract
The CIE approach to target visibility is based on Blackwell’s experimental data of contrast
thresholds for uniform discs on uniform backgrounds. An analytical model of detection
thresholds has been proposed by the CIE (1972; 1981) followed by Adrian (1989). Another line
of research is based on the fact that the detection threshold of a periodic pattern can be derived
from the detection thresholds of its Fourier components, using the Contrast Sensitivity Function
(CSF) of the human eye. We use a computer vision algorithm to compare the two approaches:
a bank of spatial filters is tuned in order to compute the visibility of edges in an image, in a way
which is consistent with the CSF (Joulan et al., 2011a). It allows comparing the visibility
computed from a CSF-based method to the visibility computed from Adrian’s formula, on the
same images.
Reference
@inproceedings{jpt-cie25,
author = {Gottar, L. and Outtaleb, W. and Br\'emond, R. and Tarel, J.-P.},
title = {The Visibility of Targets: Discs VS Gratings},
booktitle = {International Conference of the CIE Midterm (CIE'25)},
date = {July 7-9},
address = {Vienna, Austria},
year = {2025},
url = {http://perso.lcpc.fr/tarel.jean-philippe/publis/cie25.html}
}
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(c) CIE