The Dartmouth Society for Industrial and Applied Mathematics would like
to invite you to the following session:
Time: Thursday, May 2nd 2013 6 - 7:30 pm
Location: Kemeny 004
Speaker: Lorenzo Torresani (Assistant Professor in Computer Science
Department at Dartmouth College.)
Seminar Topic: Visual Recognition and Search in Gigantic Image
Collections
Pizza will be served.
Abstract: The last few years have seen a tremendous explosion of image
and video
data on the Web. Unfortunately only a small portion of this visual data
is annotated
with text. Even when tags are available, they are often not accurate,
rendering
traditional text-search ineffective. In this talk I will describe my
recent work on
designing visual recognition systems that can help users browse and
search image
repositories more effectively. Our approach centers around the learning
of a compact
image descriptor optimized to yield accurate visual recognition with
linear classifiers,
enabling real-time visual search in millions of images. I will also
discuss how our
image descriptor can be used to extract useful semantic content from
pictures appearing
in Web pages in order to boost the accuracy of keyword-based document
search engines.