简介：Anoveladaptiveswitchingfilter(ASF)basedondirectionaldetectionisproposedfordenoisingtheimagesthatarehighlycorruptedbyimpulsenoise.Theproposedalgorithmemploysanefficientnoisedetectionmechanism.Itfirstemploysanefficientmethodtoestimatethedifferencesbetweenthecurrentpixelanditsneighborsalignedwith28directions.Thecurrentnoisepixelisreplacedbyamedianorameanvaluewithinanadaptivefilterwindowwithrespecttodifferentnoisedensities.Experimentalresultsshowthattheproposedapproachcannotonlyachieveverylowmiss-detectionratioandfalse-alarmratioevenuptohighnoisecorruption,butalsopreservethedetailedinformationofanimageverywell.
简介：Anumericalmodelisproposedforthesimulationofimpulsewavesgeneratedbylandslides.Thefluid-likelandslideismodeledasageneralizednon-Newtonianvisco-plasticfluid.Theconservativelevelsetmethodisextendedtothen-phaseflowandappliedtocapturetheinterfacesofair,waterandlandslide.Numericalresultsshowanexcellentperformanceofthecurrentmodeltocapturethewholeprocessofthelandslideandtheimpulsewavegeneration.
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