WIT Press


Three-dimensional Reconstruction Of A Periodic Free Surface From Digital Imaging Measurements

Price

Free (open access)

Paper DOI

10.2495/AFM980191

Volume

18

Pages

10

Published

1998

Size

877 kb

Author(s)

D. Devriendt, D. Douxchamps, H. Capart, C. Craeye, B. Macq & Y. Zech

Abstract

We report on imaging techniques aimed at the three-dimensional character- isation of a fast-flowing free surface. The flow considered is a shallow-water current propagating over a gradually varied train of antidunes. Nearly periodic surface waves develop as a result of interaction with the three- dimensional bedforms. The topography of the flow free surface constitutes the primary interest. Two measurement techniques are presented, one direct based on stereovision, and one indirect based on velocimetry and fluid me- chanical constraints. Preliminary results obtained using th

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