[Colloquium] Research at TTIC! Subhransu Maji, TTIC Research Assistant Professor

[Dawn Ellis]

When:     Friday, February 14th at Noon

Where:    TTIC, 6045 S Kenwood Avenue, 5th Floor, Room #526

Who:       Subhransu Maji, TTIC Research Assistant Professor

Title:        Rich semantic representations for detailed visual recognition

Abstract:

Several problems in computer vision can be cast as a mapping from input
(e.g., images and video) to richly structured spaces (e.g., attributes, 3D
layout, and pose). Often the choice of the underlying representation of the
input is crucial to the success of automatic methods for such mappings. On
one hand, representations that are semantically aligned can enable better
human-centric applications, but on the other hand, representations that are
not necessarily semantic when learned from `big-data' tends to have better
empirical performance.

I'll show that with a careful design of the learning/inference method and
small amounts of additional supervision, one can learn representations that
achieve both the goals. Our methods leverage noisy annotations collected
via "crowdsourcing" to discover semantically aligned representations that
enable several high-level recognition tasks. In particular, we achieve
state of the art results for person detection and attribute recognition on
the PASCAL VOC datasets, and material recognition on the KTH-TIPS/Flickr
datasets. I'll also present instances where algorithms consider humans "in
the loop" to solve challenging tasks, such as, fine-grained category
recognition (e.g. is this bird a Quetzal?), discriminative part/attribute
discovery, and to enable faster annotation interfaces.


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Research at TTIC Seminar Series

TTIC is hosting a weekly seminar series presenting the research currently
underway at the Institute. Every week a different TTIC faculty member will
present their research.  The lectures are intended both for students
seeking research topics and adviser, and for the general TTIC and
University of Chicago communities interested in hearing what their
colleagues are up to.

To receive announcements about the seminar series, please subscribe to the
mailing list: https://groups.google.com/a/ttic.edu/group/talks/subscribe

Speaker details can be found at: http://www.ttic.edu/tticseminar.php.

For additional questions, please contact David McAllester at
mcallester at ttic.edu


-- 
*Dawn Ellis*
Administrative Coordinator,
Bookkeeper
773-834-1757
dellis at ttic.edu

TTIC
6045 S. Kenwood Ave.
Chicago, IL. 60637
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