Speaker/Affiliation: Erhardt Barth Ph.D. Profess

or Institute for Neuro- and Bioinformatics University of Luebeck

W

hen/Location: 1/23/2006 12:00 PM SEA 4.244

Host: Wilson Geisler

Title of Talk: Guiding eye movements for better communication

A

bstract: Abstract: In this talk I will present an overview of our objective

s and current
results related to gaze-based communication. Our goal is t

o integrate
gaze into visual communication systems by measuring and guid

ing eye
movements. For guidance we first predict a set of about 10 sali

ent
locations. We then change the probabilities for one of these candida

tes
to be attended: for one candidate the probability is increased for

the
others it is decreased. To increase saliency for example we add re

d
dots that are displayed very briefly such that they are hardly perceiv

ed
consciously. To decrease the probability we locally reduce the spatia

l
and/or temporal frequency content. Again if performed in a
gaze-co

ntingent fashion with low latencies these manipulations of the
video re

main unnoticed. Overall the goal is to find that real-time
transformati

on of the video which minimizes the difference between the
actual and t

he desired scanpath. Applications are in the area of
vision-based commun

ication (better control of what information is
conveyed) and augmented v

ision (guide a person%92s gaze by the gaze of an
expert or a computer-vi

sion system).