Abstract
Combined use of the algebraic reconstruction technique (ART) and the genetic
algorithm (GA) shows highly accurate and efficient tomographic reconstruction
of line-of-sight projection images of two-phase flows compared with reconstructions
obtained by separate use of these methods. A modified GA-based tomography
uses the ART reconstruction result as preliminary information on the number,
shapes, and sizes of bubbles to be reconstructed. This combined use of the
two methods exploits faster convergence of the ART to the approximate solution
space and more robust and accurate optimization of the GA to the ultimate
solution space. In the investigation a computer-synthesized phantom field
that consisted of five elliptical gas bubbles in liquid or solid surroundings
was used.
© 1998 Optical Society of America
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