SCIENTIFIC PROGRAMS AND ACTIVITIES

December 21, 2014

THE FIELDS INSTITUTE FOR RESEARCH IN MATHEMATICAL SCIENCES

Inverse Problems and Image Analysis Seminar
July 2014 - June 2015

Hosted by the Fields Institute

Organizers: Abdol-Reza Mansouri (Queen's U)
Adrian Nachman (U of Toronto)

Upcoming Seminars

 

 

 
Past Seminars
December 3
Stewart library
13:10-14:00

Prof. Klas Modin, Chalmers University of Technology, Gothenburg, Sweden
Diffeomorphic Image Registration Based on Fisher Information

In this talk I will explain a new geometric method for image registration, based on a recently discovered connection between information geometry and topological hydrodynamics. Images are thought of as probability densities. The objective is to find a diffeomorphism that warps a source density so that its gross features match a target density. The diffeomorphism should be optimal with respect to an energy functional derived from the Fisher--Rao metric. We obtain the solution by a gradient flow on the space of diffeomorphisms. This flow admits a geometric reduction to a 2-component density gradient flow. Connections to optimal mass transport will be discussed.

Friday
October 17, 2014
Time 13:10-14:00
Location: Bahen 6183

Nir Sochen, Tel-Aviv University
Certainties and Uncertainties in the Principle of Uncertainty

Measurement of features is important in signal/image processing and in physics and other branches of science and technology as well. The principle of uncertainty enforces limitations on the accuracy of the measurement of joint features. We show how these limitations can be overcomed in most cases and give a new interpretation to this principle in a way that leads to interesting generalisations.
Joint work with H-G. Stark and R. Levie

 

 

 


 

 

 

 

 

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