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readme.md	update usage section	2017-06-28 20:42:48 +02:00
vegind.py	fix all the big(tiff) problems	2022-06-29 15:42:13 -04:00

readme.md

Visible Vegetation Indexes

This script produces a Vegetation Index raster from a RGB orthophoto (odm_orthophoto.tif in your project)

Requirements

rasterio (pip install rasterio)
numpy python package (included in ODM build)

Usage

vegind.py <orthophoto.tif> index

positional arguments:
  <orthophoto.tif>  The RGB orthophoto. Must be a GeoTiff.
  index     Index identifier. Allowed values: ngrdi, tgi, vari

Output will be generated with index suffix in the same directory as input.

Examples

python vegind.py /path/to/odm_orthophoto.tif tgi

Orthophoto photo of Koniaków grass field and forest in QGIS: The Triangular Greenness Index output in QGIS (with a spectral pseudocolor): Visible Atmospheric Resistant Index: Normalized green-red difference index:

Bibliography

Hunt, E. Raymond, et al. "A Visible Band Index for Remote Sensing Leaf Chlorophyll Content At the Canopy Scale." ITC journal 21(2013): 103-112. doi: 10.1016/j.jag.2012.07.020 (https://doi.org/10.1016/j.jag.2012.07.020)