my.harvard calendar reminder:
Event Information:
Date : 3/22/2007
Start Time : 04:00 PM
End Time : 00:00 AM
Title : From Pictures to Insights
Description : Hanspeter Pfister
Senior research scientist, Mitsubishi Electric Research Laboratories and visiting scholar
at Harvard University.
http://www.merl.com/people/pfister/
Thursday, March 22, 2007
4:00PM
Maxwell Dworkin G125
(Ice Cream at 3:30PM - Maxwell Dworkin 2nd Floor Lounge Area)
As the old saying goes, a picture is worth a thousand words. But finding the
right words to describe a thousand pictures is very difficult. Today, our ability to
acquire image and video data far outstrips our ability to make sense of that data. This is
particularly true in the sciences, where huge amounts of image data are acquired from
scanners, microscopes, telescopes, and various other instruments. For the past 20 years,
visualization has focused on generating images from data. What is
now needed are better methods to generate abstractions that help us to gain insights into
large collections of image data.
In this talk I will make the argument that modern visualization approaches
require hierarchical data analysis to transform the data into meaningful, perceptually
intuitive representations. I will discuss a number of data-driven hierarchical
representations that tame the complexity of high-dimensional visual data. First, I will
address the representation of spatially-varying appearance using a tree-structured
factorization method and a new matrix decomposition algorithm. Then I will show how to
generalize these ideas to decompose time-lapse video into simple and intuitive components
that can be edited. Next, I will discuss the MERL face-scanning project, where we
collected a database of over 400 subjects with thousands of images each in order to build
high-quality statistical models of human faces. Finally, I will briefly describe the
Connectome, an ongoing project with the Harvard Center for Brain Science, which aims to
determine the detailed neural circuitry of the brain from nanoscale-resolution images.
Location : Maxwell Dworkin G125
URL :
Phone :
Calendar : Computer Science Colloquium Series
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