Optical tomography: real-time velocity profile measurement using pixel-to-pixel and sensor-to-sensor method

Ruzairi Abdul Rahim; Pang Jon Fea; Chan Kok San

doi:10.1117/1.2183708

1 March 2006 Optical tomography: real-time velocity profile measurement using pixel-to-pixel and sensor-to-sensor method

Ruzairi Abdul Rahim, Pang Jon Fea, Chan Kok San

Author Affiliations +

Optical Engineering, Vol. 45, Issue 3, 033604 (March 2006). https://doi.org/10.1117/1.2183708

Abstract

We investigate the real-time velocity profile for optical tomography using the sensor-to-sensor (STS) and pixel-to-pixel (PTP) methods. Although both methods are similar, the pixel-to-pixel velocity is more accurate than sensor-to-sensor velocity because it measures the pixel velocity within all areas of the pipe and the input signals are from upstream and downstream concentration profiles. The sensor-to-sensor velocity measures only the peripheral velocity of pipe. This velocity method obtains the input signals from the receiver output voltage of upstream and downstream sensors. Problems occur during the nonflow condition because the receiver may have noise, resulting in an incorrect velocity, which is not 0 ms^–1. This kind of problem does not happen in the pixel-to-pixel velocity method because all of the noise obtained is filtered by the image reconstruction algorithm used in this project. The velocity profile can easily be created by the pixel-to-pixel velocity method.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Ruzairi Abdul Rahim, Pang Jon Fea, and Chan Kok San "Optical tomography: real-time velocity profile measurement using pixel-to-pixel and sensor-to-sensor method," Optical Engineering 45(3), 033604 (1 March 2006). https://doi.org/10.1117/1.2183708

Published: 1 March 2006

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