Gaofen-2 TVI
Triangular Vegetation Index for Gaofen-2
Vegetation Satellite Provider: CNSA
Applications
Chlorophyll content estimation
Green LAI prediction
Crop canopy analysis
Vegetation health monitoring
Precision agriculture
Quick Stats
Category: vegetation
Sensor: Gaofen-2
Provider: CNSA
Bands Used: 3
Description
A vegetation index that uses the triangular area formed by green, red, and red-edge reflectance values. It is sensitive to leaf chlorophyll content and is particularly useful for estimating green LAI.
Formulas
General Formula
Gaofen-2 Specific Formula
0.5 * (120 * (Panchromatic - Green) - 200 * (Red - Green))Spectral Band Visualization
Band Wavelengths
green: 550
red: 670
re1: 750
Code Examples
tvi_triangular.py
References
Broge & Leblanc (2000). Comparing prediction power and stability of broadband and hyperspectral vegetation indices.
Haboudane et al. (2004). Hyperspectral vegetation indices and novel algorithms for predicting green LAI of crop canopies.