perform_radiometric_filtering: Performs radiometric filtering based on three criteria: NDVI,...

In floriandeboissieu/biodivMapRfdb: biodivMapR: an R package for α- and β-diversity mapping using remotely-sensed images

Description

Performs radiometric filtering based on three criteria: NDVI, NIR reflectance, Blue reflectance

Usage

perform_radiometric_filtering(Image_Path, Mask_Path, Output_Dir,
  TypePCA = "SPCA", NDVI_Thresh = 0.5, Blue_Thresh = 500,
  NIR_Thresh = 1500, Blue = 480, Red = 700, NIR = 835)

Arguments

Image_Path	character. Path of the image to be processed
Mask_Path	character. Path of the mask corresponding to the image
Output_Dir	character. Path for output directory
TypePCA	character. Type of PCA: choose either "PCA" or "SPCA"
NDVI_Thresh	numeric. NDVI threshold applied to produce a mask (select pixels with NDVI>NDVI_Thresh)
Blue_Thresh	numeric. Blue threshold applied to produce a mask (select pixels with Blue refl < Blue_Thresh –> filter clouds) refl expected between 0 and 10000
NIR_Thresh	numeric. NIR threshold applied to produce a mask (select pixels with NIR refl < NIR_Thresh) refl expected between 0 and 10000
Blue	numeric. central wavelength corresponding to the blue spectral band (in nanometers)
Red	numeric. central wavelength corresponding to the red spectral band (in nanometers)
NIR	numeric. central wavelength corresponding to the NIR spectral band (in nanometers)

Value

MaskPath = updated mask file

floriandeboissieu/biodivMapRfdb documentation built on Nov. 4, 2019, 12:43 p.m.