pone.0297753.s002.docx (13.8 kB)
This is the MTALAB code that converts the RGB strain image to grayscale image and plots the normalized gray histogram.
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posted on 2024-02-09, 18:33 authored by Hongyu Pan, Haotian Wang, Kang Wang, Tianjun Zhang, Bing JiThis is the MTALAB code that converts the RGB strain image to grayscale image and plots the normalized gray histogram.
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variable gas pressuresstrain cloud mapssecondary abrupt shiftprovided theoretical guidanceprincipal strain fieldinitial abrupt changediv >< plow &# 8221high &# 8221grayscale histogram underwentcontrolled experimental conditionsreduce blasting costsoptimize blasting effectsprecursor characteristics associatedgray level cocrack initiation momentgrayscale peak frequencycrack propagation phasecoal rock crackingprecursor characteristicspeak frequencycrack initiation&# 8220primary crackexperimental phenomenacrack propagationcrack propagatedblasting teststexture featurestexture analysissubsequent propagationresults revealedquantitative assessmentprecursory featurespotent methodoccurrence matrixmethodology enabledfracture mechanismscontact fullconsistent increasecoal seamscoal minesaxial pressure9 ms
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