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A simple autocorrelation algorithm for determining grain size from digital images of sediment

January 1, 2004

Autocorrelation between pixels in digital images of sediment can be used to measure average grain size of sediment on the bed, grain-size distribution of bed sediment, and vertical profiles in grain size in a cross-sectional image through a bed. The technique is less sensitive than traditional laboratory analyses to tails of a grain-size distribution, but it offers substantial other advantages: it is 100 times as fast; it is ideal for sampling surficial sediment (the part that interacts with a flow); it can determine vertical profiles in grain size on a scale finer than can be sampled physically; and it can be used in the field to provide almost real-time grain-size analysis. The technique can be applied to digital images obtained using any source with sufficient resolution, including digital cameras, digital video, or underwater digital microscopes (for real-time grain-size mapping of the bed). ?? 2004, SEPM (Society for Sedimentary Geology).

Citation Information

Publication Year 2004
Title A simple autocorrelation algorithm for determining grain size from digital images of sediment
DOI 10.1306/052203740160
Authors D. M. Rubin
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Sedimentary Research
Series Number
Index ID 70027687
Record Source USGS Publications Warehouse
USGS Organization