Richard J. Munro
A pattern matching technique for measuring sediment displacement levels
Munro, Richard J.; Dalziel, Stuart B.; Jehan, H.
Stuart B. Dalziel
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|
|Peer Reviewed||Peer Reviewed|
|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|
|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|
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf