posted on 2009-01-01, 00:00authored byTai Sing Lee
Vision is the analysis of patterns in visual images with
the view to understanding the objects and the physical
processes in the world that generate them. Locally,
visual patterns are highly ambiguous and subject to
multiple interpretations. Image structures surrounding
the pattern being analyzed can provide additional
constraints or context to disambiguate the interpretation.
The resulting contextual influences are ubiquitous
in visual perception and manifest at the neuronal
level as the modulation of the activity of neurons
by image structures outside their classical receptive
fields.