Dragonette-2/3 TVI
Triangular Vegetation Index for Dragonette-2/3
Vegetation Satellite Provider: Wyvern
Applications
leaf area index estimation
chlorophyll content assessment
vegetation biomass monitoring
crop yield prediction
canopy structure analysis
reduced saturation effects
Quick Stats
Category: vegetation
Sensor: Dragonette-2/3
Provider: Wyvern
Bands Used: 3
Description
The Triangular Vegetation Index (TVI) was developed by Broge and Hansen (2000) based on the triangular area formed by green peak, near-infrared shoulder, and chlorophyll absorption minimum. TVI is sensitive to both chlorophyll content and LAI, capturing radiative energy absorbed by pigments and providing improved retrieval accuracy with reduced saturation effects.
Formulas
General Formula
Dragonette-2/3 Specific Formula
0.5 * (120 * (Band24 - Band9) - 200 * (Band17 - Band9))Spectral Band Visualization
Band Wavelengths
550: 550
670: 670
750: 750
Code Examples
tvi_broge.py
References
Broge, N.H. and Leblanc, E. (2000) - Comparing prediction power and stability of broadband and hyperspectral vegetation indices for estimation of green leaf area index and canopy chlorophyll density. Remote Sensing of Environment, 76(2), 156-172