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

In jbferet/biodivMapR: biodivMapR: an R package for a- and ß-diversity mapping using remotely-sensed images

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

Description

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

Usage

radiometric_filtering(
  input_raster_path,
  output_dir,
  input_rast_wl,
  input_mask_path = NULL,
  NDVI_Thresh = 0.65,
  Blue_Thresh = 500,
  NIR_Thresh = 1500,
  Blue = 480,
  Red = 670,
  NIR = 835,
  maxRows = 1000,
  filetype = "GTiff",
  maskfilename = "mask_update"
)

Arguments

input_raster_path	character. Path of the image to be processed
output_dir	character. Path for output directory
input_rast_wl	numeric. spectral bands used to identify relevant bands
input_mask_path	character. Path of the mask corresponding to the image
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)
maxRows	numeric. max number of rows in each block
filetype	character. GDAL driver
maskfilename	character. name of the updated mask file

Value

MaskPath = updated mask file

jbferet/biodivMapR documentation built on April 12, 2025, 1:32 p.m.