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Optical flow computation in combustion image sequences

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Abstract

A time-resolved sequence of laser shadowgraph images is computer processed to produce 2-D optical flow maps showing the motion of the combustion interface between hot products and cold reactants. Background-subtracted shadowgraph images are reduced to skeletons, followed by local correlation between adjacent frames for computing optical flow. The resulting flow maps represent an initial step toward the goal of computer-assisted flowfield analysis and interpretation.

© 1988 Optical Society of America

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