Particle shape analysis of volcanic clast samples with the Matlab tool MORPHEO
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This paper presents a modular Matlab tool, namely MORPHEO, devoted to the study of particle morphology by Fourier analysis. A benchmark made of four sample images with different features (digitized coins, a pebble chart, gears, digitized volcanic clasts) is then proposed to assess the abilities of the software. Attention is brought to the Weibull distribution introduced to enhance fine variations of particle morphology. Finally, as an example, samples pertaining to a lahar deposit located in La Lumbre ravine (Colima Volcano, Mexico) are analysed. MORPHEO and the benchmark are freely available for research purposes. © 2012 Elsevier Ltd.
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Benchmark; Image processing; Morphology; Sedimentary particles; Weibull distribution Benchmark; MATLAB tools; Me-xico; Particle morphologies; Particle shape analysis; Fourier analysis; Image processing; Morphology; Weibull distribution; Volcanoes; benchmarking; geomorphological response; image processing; lahar; numerical model; software; volcanic landform; volcanology; Weibull theory; Colima; Colima Volcano; Mexico [North America]
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