Optical fiber imaging based tomographic reconstruction of burner flames

Md Moinul Hossain, Gang Lu, Yong Yan

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

This paper presents the design, implementation, and evaluation of an optical fiber imaging based tomographic system for the 3-D visualization and characterization of a burner flame. Eight imaging fiber bundles coupled with two RGB charge-coupled device cameras are used to acquire flame images simultaneously from eight different directions around the burner. The fiber bundle has 30k picture elements and an objective lens with a 92 \circ angle of view. The characteristic evaluation of the imaging fiber bundles and the calibration of the system were conducted to ensure the accuracy of the system. A new tomographic algorithm that combines the logical filtered back-projection and the simultaneous algebraic reconstruction technique is proposed to reconstruct the flame sections from the images. A direct comparison between the proposed algorithm and other tomographic approaches is conducted through computer simulation for different test templates and numbers of projections. The 3-D reconstruction of the cross- and longitudinal-sections of a burner flame from image projections obtained from the imaging system was also performed. The effectiveness of the imaging system and computer algorithm is assessed through experimental tests.

Original languageEnglish
Pages (from-to)1417-1425
Number of pages9
JournalIEEE Transactions on Instrumentation and Measurement
Volume61
Issue number5
Early online date5 Mar 2012
DOIs
Publication statusPublished - 1 May 2012

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Keywords

  • charge-coupled device (CCD) camera
  • flame
  • imaging fiber
  • luminosity distribution
  • three-dimensional reconstruction
  • tomography

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