NDLI: Stereo imaging velocimetry technique using standard off-the-shelf ccd cameras

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Stereo imaging velocimetry technique using standard off-the-shelf ccd cameras

Content Provider	NASA Technical Reports Server (NTRS)
Author	Gray, Elizabeth McDowell, Mark
Copyright Year	2004
Description	Stereo imaging velocimetry is a fluid physics technique for measuring three-dimensional (3D) velocities at a plurality of points. This technique provides full-field 3D analysis of any optically clear fluid or gas experiment seeded with tracer particles. Unlike current 3D particle imaging velocimetry systems that rely primarily on laser-based systems, stereo imaging velocimetry uses standard off-the-shelf charge-coupled device (CCD) cameras to provide accurate and reproducible 3D velocity profiles for experiments that require 3D analysis. Using two cameras aligned orthogonally, we present a closed mathematical solution resulting in an accurate 3D approximation of the observation volume. The stereo imaging velocimetry technique is divided into four phases: 3D camera calibration, particle overlap decomposition, particle tracking, and stereo matching. Each phase is explained in detail. In addition to being utilized for space shuttle experiments, stereo imaging velocimetry has been applied to the fields of fluid physics, bioscience, and colloidal microscopy.
File Size	1067053
Page Count	26
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20050041662
Archival Resource Key	ark:/13960/t0ms8pg2v
Language	English
Publisher Date	2004-12-01
Access Restriction	Open
Subject Keyword	Calibrating Colloids Space Shuttles Fluid Flow Imaging Techniques Decomposition Ccd Cameras Algorithms Microscopy Three Dimensional Flow Particle Image Velocimetry Stereophotography Velocity Measurement Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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