Journal
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
Volume 23, Issue 5, Pages 381-387Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppsc.200500965
Keywords
automated-dynamic-image-analysis; particle size and shape; sediment; two-dimensional Kolmogorov-Smirnov test
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The application of Automated Dynamic Image Analysis (ADIA) for measuring the size and shape of sedimentary grains is presented. This technique determines the size and shape of a large number of particles (typically 5,000 to 50,000 or greater) in the size range between 10 to 1,500 mu m. ADIA measurements are carried out using a RapidVue particle analyzer. The size and shape of particles are obtained by analyzing digital images. Each image is composed of shapes representing two-dimensional projections of particles. The analysis yields the area and perimeter of each particle cross-section, which are transformed into size-independent shape values. The analysis of such a large number of particles results in a very small statistical variation of the results, ca. 0.3% for 50,000 particles. Since operator selection of images does not enter the measurement procedure, the risk of bias caused by subjective sample selection is eliminated. ne combination of ADIA with a two-dimensional Kolmogorov-Smirnov test, allows the identification of similarities and differences between sedimentary grains.
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