BJ3N VARI
Visible Atmospherically Resistant Index for BJ3N
Vegetation Satellite Provider: 21AT
Applications
vegetation health assessment
greenness evaluation
plant condition monitoring
atmospheric effect mitigation
RGB-based vegetation analysis
drone-based vegetation monitoring
precision agriculture with standard cameras
Quick Stats
Category: vegetation
Sensor: BJ3N
Provider: 21AT
Bands Used: 3
Description
The Visible Atmospherically Resistant Index (VARI) is designed to emphasize vegetation in the visible portion of the spectrum while mitigating illumination differences and atmospheric effects. It evaluates the 'greenness' in plants using only visible light bands, making it ideal for standard RGB cameras without requiring specialized multispectral sensors.
Formulas
General Formula
BJ3N Specific Formula
(Green - Red) / (Green + Red - Blue)Spectral Band Visualization
Band Wavelengths
BLUE: 450-520
GREEN: 520-600
RED: 640-760
Code Examples
vari_visible.py
References
Gitelson, A.A., Kaufman, Y.J., Stark, R., and Rundquist, D. (2002) - Novel algorithms for estimation of vegetation fraction. Remote Sensing of Environment, 80, 76-87