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Proceedings Paper

From pixels to voxels: tracking volume elements in sequences of 3D digital images
Author(s): Hans-Gerd Maas; Anthony Stefanidis; Armin Gruen
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Paper Abstract

We present an image analysis technique for examining the fine scale (Kolmogorov scale) variations of the mixing process in a turbulent flow. The objective is to trace the interaction of two flows by identifying their motions in a sequence of 3-D images obtained with a system based on a high-speed solid state camera. After briefly describing the imaging process and the particularities related to the capture of quasi-continuous 3-D image sequences, we focus on theoretical and implementational issues associated with feature tracking in 3-D image sequences. We present the extension of least squares matching from pixels, associated with 2- D images, to voxels, associated with 3-D images. The use of additional constraints of radiometric and/or geometric nature strengthens the matching solution. In addition, the large amount of data associated with 3-D image sequences in general, and the high and multidirectional velocities involved in this application in particular, make the division of an efficient matching strategy quite important.

Paper Details

Date Published: 17 August 1994
PDF: 8 pages
Proc. SPIE 2357, ISPRS Commission III Symposium: Spatial Information from Digital Photogrammetry and Computer Vision, (17 August 1994); doi: 10.1117/12.182861
Show Author Affiliations
Hans-Gerd Maas, Swiss Federal Institute of Technology (Switzerland)
Anthony Stefanidis, Swiss Federal Institute of Technology (Switzerland)
Armin Gruen, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 2357:
ISPRS Commission III Symposium: Spatial Information from Digital Photogrammetry and Computer Vision
Heinrich Ebner; Christian Heipke; Konrad Eder, Editor(s)

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