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Proceedings Paper

Bubble velocity measurements using binary image processing techniques
Author(s): Tri Bui-Dinh; Tae-Sun Choi
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Paper Abstract

The bubble rise velocity in air/water two-phase flow in a vertical pipe is studied experimentally by processing consecutive series of digitized video images. The shape of the bubble, as well as its instantaneous velocity is measured by using binary image processing techniques. Digital image processing algorithms have been developed to obtain the coordinates of specified points in image. This coordinate data was used to calculate the instantaneous bubble velocity, which can be expressed as a separation distance between the two consecutive image frames. This method has many advantages it is a non-invasive measurement, and does not require sophisticated laboratory equipment. Images are directly digitized by using CCD digital camera. Image analysis involves purely computer-based computation. Hence reasonably accurate velocity data has been obtained from only one experiment in a small period of time.

Paper Details

Date Published: 28 December 2000
PDF: 6 pages
Proc. SPIE 4115, Applications of Digital Image Processing XXIII, (28 December 2000); doi: 10.1117/12.411583
Show Author Affiliations
Tri Bui-Dinh, Kwangju Institute of Science and Technology (South Korea)
Tae-Sun Choi, Kwangju Institute of Science and Technology (South Korea)

Published in SPIE Proceedings Vol. 4115:
Applications of Digital Image Processing XXIII
Andrew G. Tescher, Editor(s)

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