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GEOMETRICALLY BASED MOTIONS (GBM)

Core Participants  Publications

The GBM Program concluded in June, 2001. The information below remains available as an archive of the various seminars and workshops that ran throughout the program. In particular, there is a list of core participants. Also, there is a separate page for the GBM 2002 Reunion Conference at Lake Arrowhead which is September 16 - 20, 2002. Other related upcoming conferences include:

IPAM  Spring 2001

Organizing Committee:

Jean-Michel Morel (Paris)

Stanley Osher (Los Angeles)

Panagiotis Souganidis (University of Texas, Austin)

 

A recent exciting development which bridges pure and applied mathematics and which has had a powerful and wide reaching effect involves new numerical and analytic techniques for computing geometric objects and capturing moving interfaces, as well as the real world applications (ranging from materials science to image processing) that can now be investigated using these new methods. The level set method and the theory of viscosity  solutions have matured into enabling technologies. Related numerical and analytical ideas including high resolution numerical methods, convolution generated motion, threshold dynamics, dynamic surface extension, cellular automata, stochastic partial differential equations and harmonic maps, some of which are quite novel, some of which are classical, are relevant to Geometrically Based Motions.

The real applications of these and related ideas include: interfaces in materials science, computer aided design, robotics, high frequency wave propagation and inverse problems, e.g. in geophysics, image processing, computer vision, computer graphics, neuroscience, multiphase (reacting and non-reacting), flows in fluid dynamics and the connection to structures.  Other applications continue to arise.

The program will include workshops selected from the following topics: geometric flows, interfaces in geophysics, interfaces in material sciences, image processing with applications to neuroscience, computer vision, and computer graphics with applications to the entertainment industry. The goal of the program is to foster working relationships among researchers studying mathematical and numerical techniques and people doing real world applications.

The program will take place at the Institute for Pure and Applied Mathematics (IPAM), a new NSF  mathematical sciences research institute located on the UCLA campus.  Mathematicians, statisticians, computer scientists, and biologists—from academia and from industry—are all invited to attend.

Program Period:  Mar. 27-June 15, 2001

Mar. 27 - June 15 Seminars
Mar. 27 - Apr. 6 Tutorials
Apr. 16 -  Apr. 17 Multiresolution Digital Geometry, Rendering, and Control of Hybrid Systems
Apr. 18 -  Apr. 20 Geometrically Based High Frequency Wave Methods with Applications
Apr. 23 -  Apr. 27 Material Interfaces and Geometrically Based Motions
May  9  -  May 11 Moving Interfaces and Threshold Dynamics
May 14  - May 18 Image Processing, Computer Vision, Computer Graphics, Adaptive and Fast Algorithms
May 21 -  May 24 Imaging in Medicine and Neurosciences
June 11 - June 15 Culminating Workshop at Lake Arrowhead
Sept. 16 - 20, 2002 Reunion Conference at Lake Arrowhead

 

Program Activities

WEEKLY SEMINARS

Image Processing Seminar

Applied Mathematics Seminar on Spectral Methods for Time Dependent Problems

Seminar on Partial Differential Equations

Bi-Weekly Seminar on Multiresolution and Multi-Scale Scientific Computing

Other IPAM Seminars

 

·     Weekly Seminar on Imaging

Image Processing Seminars

Organizer: Luminita Vese

lvese@math.ucla.edu 

           

Time: Wednesdays, 4.00pm-5.00pm

Location: IPAM Building, Room 1200

Schedule

       

Next Talk: May 16

Dario Ringach, UCLA Department of Psychology

"The Shape of Kernels in your Brain"

 

 

·     Weekly Seminar in Applied Mathematics 

Spectral Methods for Time Dependent Problems

Instructor: Eitan Tadmor

tadmor@math.ucla.edu , Office: Math Sciences \#7945, IPAM \#1172A

Time: Tuesdays and Thursdays, 2:00pm-3:30pm

Location: IPAM Building, Room 1180

 

·     Weekly Seminar on Partial Differential Equations

Organizers: Hailiang Liu hliu@math.ucla.edu

                      Eitan Tadmor tadmor@ipam.ucla.edu

Time: Wednesdays, 2:00pm-3:00pm

Location: IPAM Building, Room 1200

Schedule

    

Next Talk: May 2

Aaron Yip (IPAM)

"Phase Field Models and Sharp Interfacial Motions"

 

April 11

Gui-Qiang Chen, Northwestern University & IPAM

"Divergence-Measure Fields, Generalized Gauss-Green Formula, and Conservation Laws"

 

·     Bi-Weekly Seminar on

Multiresolution and Multi-Scale Scientific Computing

Organizer: Tony Chan chan@ipam.ucla.edu , Bjorn Engquist engquist@math.ucla.edu 

Time: Thursday 12:00pm-1.00pm

Location: IPAM Building, Room 1180

Schedule:

 

SEMINARS and LECTURES

·      May 29, 2001 Mark Alber (University of Notre Dame/Stanford and IPAM)

Piecewise Smooth Solutions of Nonlinear PDE's and Cell Aggregation in Biology

Time:  Tuesday 2:00pm

Location: IPAM Building, Room 1200

 

·      May 29, 2001 Mikhail Feldman (University of Wisconsin)

On Existence and Uniqueness of Optimal Maps in Monge Mass Transfer Problem

Time:  Tuesday 11:00am

Location: IPAM Building, Room 1200

 

·      May 25, 2001 Haitao Fan (Georgetown University)

Front motion in multi-dimensional conservation laws with stiff source terms driven by mean curvature and variation of front thickness

Time: Friday 11:30-12:15

Location: IPAM Building

 

·      May 25, 2001 Benoit Perthame (Ecole Normale Superieure, DMA)

The Saint-Venant system.  Derivation from Navier-Stokes and numerical issues.

Time: Friday 10:00am

Location: IPAM Building

 

·      May 11, 2001 Omar Lakkis (University of Maryland and IPAM)

A posteriori error analysis and adaptivity for the mean curvature flow

Time:  Friday 2:00-3:00pm

Location: IPAM Building, Room 1200

 

·      April 20, 2001 Frédéric Guichard (Poseidon Technologies)

Poseidon System : Automatic Detection of Drowning Accidents

Time:  Friday 2:00pm

Location: IPAM Building

 

·     April 13, 2001 Jean-David Benamou (INRIA)

A Computational Fluid Mechanics Formulation for the Monge-Kantorovitch Mass Transfer Problem and its Numerical Resolution

Abstract     PDF File

Time: Friday 11:00am

Location: IPAM Building, Room 1200

 

·      April 12, 2001 Oleg Diyankov

(Head of Computational MHD Laboratory, Russian Federal Nuclear Center)

Review of the Applied Problems Solved in the Computational MHD Laboratory RFNC-VNIITF

Abstract     PowerPoint File

Time: Thursday 11:00am

Location: IPAM Building, Room 1200

 

Funding

Funding for participants at all levels is available, especially for advanced graduate students and researchers in the early stages of their career who want to attend the full program.

Contact

Institute for Pure and Applied Mathematics (IPAM)

University of California Los Angeles (UCLA)

Los Angeles CA 90095

 

e-mail: (310)825-4755

Web:    http://www.ipam.ucla.edu/programs/gbm2001

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