Visual adaptation and the relative nature of perception
Webster, M.A.
Image Processing, 2001. Proceedings. 2001 International Conference on
Volume 2, Issue , 7-10 Oct 2001 Page(s):8 - 11 vol.2
Digital Object Identifier 10.1109/ICIP.2001.958409
Summary:Our perception is constantly shaped by processes of adaptation
that adjust visual sensitivity in response to the images currently
before us. Many classic after-effects demonstrate the striking changes
in perceived color, form and motion that can result from only brief
exposures to simple adapting patterns. But what are the adapting
patterns we encounter in everyday viewing, and how do they influence
everyday visual judgments? We have examined the states of adaptation
induced by the properties of the natural visual environment, and show
that they can profoundly affect many natural visual tasks, from color
perception to face recognition to the perception of image blur. These
sensitivity adjustments are an intrinsic part of the visual response to
any stimulus, and presumably functions to match visual coding to the
current characteristics of the world. Consequently, how the world looks
may-to a surprisingly large extent-depend on what you've recently been
looking at
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