An Ultrasonic Tomography for Reconstructing the Velocity Profile of Air Flow from Nonuniformly Spaced Projection Data

An Ultrasonic Tomography for Reconstructing the Velocity Profile of Air Flow from Nonuniformly Spaced Projection Data

The technique of computed tomography (CT) is used to reconstruct velocity profile of air flow from its average velocities from ultrasonic velocimeter measuring over a specific set of paths. Although the scanning method for collecting data can be considered as a special case of diverged beam scan, th...

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Veröffentlicht in:Keisoku Jidō Seigyo Gakkai ronbunshū 1992/11/30, Vol.28(11), pp.1274-1281
Hauptverfasser: TEERAWATANACHAI, Sutham, KOMIYA, Kin-ichi, SASAMOTO, Hiromichi, OGATA, Nariaki
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Sprache:eng
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computed tomography
flow measurements
image reconstruction
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container_end_page 1281
container_issue 11
container_start_page 1274
container_title Keisoku Jidō Seigyo Gakkai ronbunshū
container_volume 28
creator TEERAWATANACHAI, Sutham
KOMIYA, Kin-ichi
SASAMOTO, Hiromichi
OGATA, Nariaki
description The technique of computed tomography (CT) is used to reconstruct velocity profile of air flow from its average velocities from ultrasonic velocimeter measuring over a specific set of paths. Although the scanning method for collecting data can be considered as a special case of diverged beam scan, this set of data can be rearranged into the form of interlaced parallel scan. A knowledge of zero velocity at circumference of the pipe is also introduced and the data are interpolated in each view to obtain uniformly spaced data. This is then applied in the convolution algorithm for parallel scan data. This method is tested with the data from the experiment and the result is reported.
doi_str_mv 10.9746/sicetr1965.28.1274
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source EZB-FREE-00999 freely available EZB journals
subjects computed tomography
flow measurements
image reconstruction
title An Ultrasonic Tomography for Reconstructing the Velocity Profile of Air Flow from Nonuniformly Spaced Projection Data
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