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.