We have carried out a psychophysical experiment to register perceived contrast. 17 observers viewed 15 images, each image was shown for 40 seconds where the observer stated the perceived contrast of the image. The results from the observers indicate that the consensus of contrast among experts decreases as the perceived contrast decreases. Experts also rate the contrast higher then non-experts. A number of contrast algorithms, developed to predict perceived contrast was evaluated against the perceived contrast from the observers.
Evaluation of contrast measures in relation to observers perceived contrast / M. Pedersen, A. Rizzi, J.Y. Hardeberg, G. Simone - In: Proc. of 4th European IS&T Conference on Color in Graphics, Imaging and Vision, CGIV2008[s.l] : IS&T-Society for Imaging Science and Technology, 2008 Jun. - pp. 253-258 (( Intervento presentato al IV. convegno 4th European IS&T Conference on Color in Graphics, Imaging and Vision, CGIV2008 tenutosi a Barcelona, Espana nel 2008.
Evaluation of contrast measures in relation to observers perceived contrast
A. RizziSecondo
;
2008
Abstract
We have carried out a psychophysical experiment to register perceived contrast. 17 observers viewed 15 images, each image was shown for 40 seconds where the observer stated the perceived contrast of the image. The results from the observers indicate that the consensus of contrast among experts decreases as the perceived contrast decreases. Experts also rate the contrast higher then non-experts. A number of contrast algorithms, developed to predict perceived contrast was evaluated against the perceived contrast from the observers.
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