Hyperspectral Mineral Identification for the German EnMAP Space Mission
نویسندگان
چکیده
Gen_spectrum=Generic_1nm_Interpolation(Input_Spectrum, Method=’Cubic Splines’) First_filt_step=Filter_Boxcar(Gen_Spectrum, boxcar_length=’10% of Gen_spectrum’) Second_filt_step=Filter_Boxcar(First_filt_step, boxcar_length=’10% of Gen_spectrum’) Third_filt_step=Filter_Boxcar(Gen_Spectrum, boxcar_length=’2% of Gen_spectrum’) Fourth_filt_step=Filter_Boxcar(Third_filt_step, boxcar_length=’2% of Gen_spectrum’) Aux1=Stdev(Second_filt_stepFirst_filt_step) Aux2=Stdev(Fourth_filt_stepThird_filt_step) If Aux1>=Aux2: Aux3= First_filt_step/Second_filt_step Else: Aux3= Third_filt_step/Fourth_filt_step Peaks=Extract_Absorption_Peaks(Aux3) Peak_Indices=Get_Indices(Absorption_Peaks) Lower_Hull=Interpolate_Linear(Gen_Spectrum,Peak_Indices) Segments=(Gen_Spectrum-Lower_Hull) For each Segment in Segments: Nodes=Get_Indices_of_Maximum(Segment) Preliminary_Hull=Interpolate_Linear(Input_Spectrum,Nodes) Hull=Iterate_over_Segments_unitl_Final_Hull_is_Found(Nodes, Gen_Spectrum) Feature_Depth_Absolute, Feature_Depth_Relative =Hull_Removal(Hull,Gen_Spectrum)
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