Spring 2002
Tuesdays 12:15 Goldwater 604
(Supported in part by the Systems Science and Engineering Research Center)
Seminar Schedule:<http://math.la.asu.edu/~tom/cognition/math+cogsched.html>
The Mathematics and Cognition, Joint with the Stochastic Modeling Seminar Series, will
present our next lecture on Tuesday, February 19, at 12:15 PM in GWC 604.
Our speaker will be John Black, President of Micrology pbt, Inc. and
the Dept of Computer Science,
who will speak on the topic:
"Modeling the human visual system from the bottom up, and from the top down"
Abstract.
| Broadly speaking, the human visual system can be partitioned into two major
parts (1) the early visual system, which processes visual input from the
retina in a bottom-up manner and (2) the "higher" visual processing centers,
which process the output of the early visual system in a top-down manner.
A great deal has been learned about the early visual system - enough to construct rudimentary models that show the mechanisms by which it processes the retinal image. This talk will present a model designed by John, and show some processed images that are produced by that model. Much less is understood about top-down processing - not really enough to model it successfully. Psychologists have explored top-down processing to some degree, but there is still a "Semantic gap" between low-level (bottom-up) processing and high-level (top-down) processing. This talk will review some recent work that John has done, in an attempt to narrow this gap. |