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Recasting Tomo-PIV Reconstruction as Constrained and L1-Regularized Non-Linear Least Squares Problem

Gesemann, Sebastian and Schanz, Daniel and Schröder, Andreas and Petra, Stefania and Schnörr, Christoph (2010) Recasting Tomo-PIV Reconstruction as Constrained and L1-Regularized Non-Linear Least Squares Problem. 15th International Symposium on Application Laser Techniques to Fluid Mechanics, 05. - 08.07.2010, Lisbon, Portugal.

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Official URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2010/programme.asp

Abstract

Tomo-PIV is a volumetric flow measurement system. It is able to obtain instantaneous 3D-3C velocity fields using multiple cameras that observe the same volume of two subsequently illuminated particle distributions from different angles. Part of the measurement technique is the 3D reconstruction of the particle volume from 2D images. This work presents a promising alternative approach to the popular reconstruction algorithms MART and SMART. Simulations and experimental data of a turbulent free jet at Ma = 0.7 are used in order to assess and demonstrate the performance of the newly developed reconstruction algorithm based on constrained least squares strategies and L1-regularization.

Document Type:Conference or Workshop Item (Speech)
Title:Recasting Tomo-PIV Reconstruction as Constrained and L1-Regularized Non-Linear Least Squares Problem
Authors:
AuthorsInstitution or Email of Authors
Gesemann, SebastianUNSPECIFIED
Schanz, DanielUNSPECIFIED
Schröder, AndreasUNSPECIFIED
Petra, StefaniaUniversity of Heidelberg, Germany
Schnörr, ChristophUniversity of Heidelberg, Germany
Date:2010
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 1-12
Series Name:Conference Proceedings on USB-Stick
Status:Published
Keywords:Tomographic PIV, algebraic reconstruction, regularization, preconditioning, constraining
Event Title:15th International Symposium on Application Laser Techniques to Fluid Mechanics
Event Location:Lisbon, Portugal
Event Type:international Conference
Event Dates:05. - 08.07.2010
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:23 Jul 2010 11:16
Last Modified:08 May 2014 23:17

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