Summation Of Perceptual Cues In Natural Visual Scenes
July 16th, 2008 | by admin |
Observers viewed pairs of slightly different photographs of natural scenes, rating the perceptual difference between them. If an image pair differs in two ways, how big is the perceptual difference compared to when images differ in only one way?
It is well established that detection thresholds for combinations of sinusoidal gratings are empirically governed by “Quick pooling” or “Minkowski summation”.
Our experiment reveals that this same rule describes combination of complex suprathreshold changes in natural scenes, demonstrating that high-level tasks in everyday vision are governed by the same simple rules as exhibited in experiments using analytic but non-natural stimuli.
Proceedings of the Royal Society B: Biological Sciences
Proceedings B is the Royal Society’s flagship biological research journal, dedicated to the rapid publication and broad dissemination of high-quality research papers, reviews and comment and reply papers. The scope of journal is diverse and is especially strong in organismal biology.
www.publishing.royalsociety.org/proceedingsb
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