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A pattern matching technique for measuring sediment displacement levels

Munro, Richard J.; Dalziel, Stuart B.; Jehan, H.

Authors

Richard J. Munro

Stuart B. Dalziel

H. Jehan



Abstract

This paper describes a novel technique for obtaining accurate, high (spatial) resolution measurements of sediment redeposition levels. A sequence of different random patterns are projected onto a sediment layer and captured using a high-resolution camera, producing a set of reference images. The same patterns are used to obtain a corresponding sequence of deformed images after a region of the sediment layer has been displaced and redeposited, allowing the use of a high-accuracy pattern matching algorithm to quantify the distribution of the redeposited sediment. A set of experiments using the impact of a vortex ring with a glass ballotini particle layer as the resuspension mechanism are described to test and illustrate the technique. The accuracy of the procedure is assessed using a known crater profile, manufactured to simulate the features of the craters observed in the experiments.

Journal Article Type Article
Publication Date Sep 1, 2004
Journal Experiments in Fluids
Print ISSN 0723-4864
Electronic ISSN 0723-4864
Publisher Humana Press
Peer Reviewed Peer Reviewed
Volume 37
Issue 3
Institution Citation Munro, R. J., Dalziel, S. B., & Jehan, H. (2004). A pattern matching technique for measuring sediment displacement levels. Experiments in Fluids, 37(3), doi:10.1007/s00348-004-0829-8
DOI https://doi.org/10.1007/s00348-004-0829-8
Publisher URL http://dx.doi.org/10.1007/s00348-004-0829-8
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information The final publication is available at Springer via http://dx.doi.org/10.1007/s00348-004-0829-8

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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