Schanz, Daniel and Gesemann, Sebastian and Schröder, Andreas and Wieneke, Bernhard and Novara, Matteo (2011) Volume Reconstruction using spatial varying optical transfer function (OTF). FVR 2011, 29. Nov. - 01. Dec. 2011, Poitiers, France.
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Official URL: http://fvr2011.conference.univ-poitiers.fr
A new approach to the weighting function, which describes particle imaging in the reconstruction process of tomographic PIV, is introduced. Instead of assuming a spatially homogeneous mapping function of a voxel to the images, a variable optical transfer function (OTF) is applied. By this method, the effects of optical distortions, introduced during the recording process, can be reduced considerably. The effect of blurred particle imaging and astigmatisms on reconstruction and correlation quality is investigated via simulated data. Reconstructions using a spatially varying OTF, calibrated to the imaging conditions, show a significant improvement in reconstruction quality, correlation quality and accuracy of the particle peak position. First results on experimental data indicate a distinct reduction in ghost particle intensity compared to other approaches.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Volume Reconstruction using spatial varying optical transfer function (OTF)|
|In ISI Web of Science:||No|
|Series Name:||Conference Proceedings on CD-ROM|
|Keywords:||optical transfer function (OTF), tomographic PIV|
|Event Title:||FVR 2011|
|Event Location:||Poitiers, France|
|Event Type:||international Conference|
|Event Dates:||29. Nov. - 01. Dec. 2011|
|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|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Experimental Methods|
|Deposited By:||Ilka Micknaus|
|Deposited On:||05 Dec 2011 10:49|
|Last Modified:||05 Dec 2011 10:49|
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