kopia lustrzana https://github.com/OpenDroneMap/ODM
32 wiersze
1.1 KiB
Markdown
32 wiersze
1.1 KiB
Markdown
# Visible Vegetation Indexes
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This script produces a Vegetation Index raster from a RGB orthophoto (odm_orthophoto.tif in your project)
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## Requirements
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* rasterio (pip install rasterio)
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* numpy python package (included in ODM build)
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## Usage
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```
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vegind.py <orthophoto.tif> index
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positional arguments:
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<orthophoto.tif> The RGB orthophoto. Must be a GeoTiff.
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index Index identifier. Allowed values: ngrdi, tgi, vari
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```
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Output will be generated with index suffix in the same directory as input.
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## Examples
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`python vegind.py /path/to/odm_orthophoto.tif tgi`
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Orthophoto photo of Koniaków grass field and forest in QGIS: 
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The Triangular Greenness Index output in QGIS (with a spectral pseudocolor): 
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Visible Atmospheric Resistant Index: 
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Normalized green-red difference index: 
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## Bibliography
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1. 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
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(https://doi.org/10.1016/j.jag.2012.07.020)
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