Image reconstruction of 2D concentration distribution of particle flow with extinction optical tomography

Details Image reconstruction of 2D concentration distribution of particle flow with extinction optical tomography Image reconstruction of 2D concentration distribution of particle flow with extinction optical tomography

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.5253..407l&link_type=abstract

Fifth International Symposium on Instrumentation and Control Technology. Edited by Zhang, Guangjun; Zhao, Huijie; Wang, Zhongyu

Astronomy and Astrophysics

Astronomy

Scientific paper

Optical tomography, as a novel technique developed recently, has drawn more and more interest among imaging of biology tissue, astronomy and industrial process monitoring, and so on. Extinction method is one of traditional measurement for particle concentration, which can be improve a novel optical measurement with computed tomography (CT) to reconstruct image of particle concentration distribution. In this paper, the theoretical model of exctinction optical tomography was presented, the relationship between geometric structure of optical array sensors and section drawings of measured area was analyzed, and so did between the structure and spatial resolution. In experiments, 8 x 8 orthogonal array of optical sensors with two-directions projection are used for flow imaging by means of FBP, which is for capturing movement track of a glass canaliculus with arenaceous quartz inside in a section. Furthermore, image reconstructions based on optical array sensors with two-directional angles and four-directional angles are simulated numerically and some significant results can be found from the simulated results.

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