Division of Applied Mathematics

Seminars for Oct 13 - Oct 17, 1997

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• Monday, October 13, 1997
  
  

  Lefschetz Center for Dynamical Systems Seminar

  Speaker:

  Columbus Day Holiday Observed

• Tuesday, October 14, 1997
  
  

  LEMS and Electrical Science Seminar

  Speaker:	Peter Giblin, Brown University & The University of Liverpool, United Kingdom
  Title:	How Can We Measure Affine Symmetry?
  Time/Place:	4:00 p.m., B&H 161

• Wednesday, October 15, 1997
  
  

  Brown Applied Mathematics Pattern Theory and Vision Seminar

  Speaker:	A.L. Yuille (Work with Dr.'s P.-Y. Burgi & N.M. Grzywacz).
  Title:	Visual Motion Estimation and Prediction: A Probabilistic Network Model for Temporal Coherence
  Time/Place:	3:00 p.m., 182 George Street, Room 110

  Abstract:   We develop a probabilistic theory for the temporal integration of motion. The input data is temporally grouped and used to predict and estimate motion flows. The theory is implemented by a parallel network model, derived from the theory, which has similarities to the cortex. The theory is inspired by, and gives qualitative agreement with, psychophysical data involving motion outliers and occluders.

  Brown Applied Mathematics Pattern Theory and Vision Seminar

  Speaker:	Steven Zucker, Yale University, Center for Computational Vision and Control
  Title:	Complexity, Confusion, and Computational Vision
  Time/Place:	4:30 p.m., 182 George Street, Room 110

  Brown Analysis Seminar

  Speaker:	Mikhail Shubin, Northeastern University
  Title:	L2 Holomorphic Functions on Non-Compact Manifolds
  Time/Place:	4:15 p.m., Kassar 105   (Coffee at 3:45 p.m.)

• Thursday, October 16, 1997
  
  

  Brown University Graduate School, Dissertation Defense Information

  Speaker:	Kevin Kochanek, Brown University, Division of Applied Mathematics
  Title:	Dynamic Programming Algorithms for Maximum Likelihood Decoding
  Time/Place:	10:00 a.m., B&H 751

  Applied Mathematics Colloquium

  Speaker:	Yan Guo, Division of Applied Mathematics, Brown University
  Title:	Stability and Instability in a Collisionless Plasma
  Time/Place:	4:30 p.m., B&H 158

  
  
  
  

• Friday, October 17, 1997
  
  

  Joint LEMS/Applied Mathematics Seminar

  Speaker:	Dr. Meir Barzohar, Rafael, Haifa, Israel
  Title:	Fast Robust Tracking of Curvy Partially Occluded Roads in Clutter in Aerial Images
  Time/Place:	12:00 noon, B&H 751

  Abstract:   A heretofore unsolved challenge is the completely automatic and accurate estimation of road boundaries in aerial images when the roads may be partially or completely locally occluded and clutter may be prevalent. In this talk I introduce a roadfinder that is effective in meeting this challenge. The roadfinder begins with one or more seeds on each long road, and then accurately estimates the remaining boundaries, which can be found completely automatically by the algorithm. The algorithm is robust to missing boundary edges on one side of the road and on both sides of the road simultaneously. These arise from shadows and occlusion by trees, small structures, etc. It is also robust to clutter within the road caused by cars or trucks, and to clutter resulting from intersecting or close parallel roads. The algorithm is based on simple clutter and occlusion models and a combined Multihypothesis Generalized Kalman Filter (MGKF).

  PDE Seminar

  Speaker:	Professor Walter Craig, Department of Mathematics, Brown University
  Title:	Normal Forms in Fluid Mechanics
  Time/Place:	3:00 p.m., Kassar 105

  Department of Mathematics Colloquium

  Speaker:	Simon Wong, Brown University
  Title:	1 Square, 2 Squares, 3 Squares, 4 Squares
  Time/Place:	4:30 p.m., Kassar 105

  <---   1997  Index

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