[Colloquium] 1/22 Research at TTIC: Michael Maire, TTIC

[Mary Marre]

*When: *    Friday, January 22nd at noon

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

*Who: *     Michael Maire, TTIC

*Title: *Affinity CNN: Learning Pixel-Centric Pairwise Relations for
Figure/Ground
Embedding

*Abstract:*
Spectral embedding provides a framework for solving perceptual
organization problems, including image segmentation and figure/ground
organization.  From an affinity matrix describing pairwise relationships
between pixels, it clusters pixels into regions, and, using a
complex-valued extension, orders pixels according to layer.  We train a
convolutional neural network (CNN) to directly predict the pairwise
relationships that define this affinity matrix.  Spectral embedding then
resolves these predictions into a globally-consistent segmentation and
figure/ground organization of the scene.  Experiments demonstrate
significant benefit to this direct coupling compared to prior works
which use explicit intermediate stages, such as edge detection, on the
pathway from image to affinities.  Our results suggest spectral
embedding as a powerful alternative to the conditional random field
(CRF)-based globalization schemes typically coupled to deep neural
networks.

Joint work with Takuya Narihira and Stella X. Yu.


********************************************************************

*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.

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

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






Mary C. Marre
Administrative Assistant
*Toyota Technological Institute*
*6045 S. Kenwood Avenue*
*Room 504*
*Chicago, IL  60637*
*p:(773) 834-1757*
*f: (773) 357-6970*
*mmarre at ttic.edu <mmarre at ttic.edu>*
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