A pattern matching technique for measuring sediment displacement levels

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

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.

Citation

Munro, R. J., Dalziel, S. B., & Jehan, H. (2004). A pattern matching technique for measuring sediment displacement levels. Experiments in Fluids, 37(3), https://doi.org/10.1007/s00348-004-0829-8

• Journal Article Type: Article
• Acceptance Date: Apr 30, 2004
• Online Publication Date: Jul 6, 2004
• Publication Date: Sep 1, 2004
• Deposit Date: Jun 6, 2016
• Publicly Available Date: Jun 6, 2016
• Journal: Experiments in Fluids
• Print ISSN: 0723-4864
• Electronic ISSN: 0723-4864
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 37
• Issue: 3
• DOI: https://doi.org/10.1007/s00348-004-0829-8
• Public URL: https://nottingham-repository.worktribe.com/output/703216
• Publisher URL: http://dx.doi.org/10.1007/s00348-004-0829-8
• Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/s00348-004-0829-8