BJ3N BI2
Second Brightness Index for BJ3N
Soil Satellite Provider: 21AT
Applications
soil brightness assessment
soil organic carbon estimation
soil moisture detection
soil fertility mapping
bare soil analysis
agricultural monitoring
Quick Stats
Category: soil
Sensor: BJ3N
Provider: 21AT
Bands Used: 3
Description
The Second Brightness Index (BI2) is an enhanced version of the Brightness Index that includes the near-infrared band in addition to red and green bands. Developed by Escadafal and Huete, it provides improved assessment of soil properties, particularly soil organic carbon content and moisture levels.
Formulas
General Formula
BJ3N Specific Formula
sqrt((Red^2 + Green^2 + NIR^2) / 3)Spectral Band Visualization
Band Wavelengths
GREEN: 560
RED: 665
NIR: 842
Code Examples
bi2.py
References
Escadafal, R. and Huete, A. (1992) - Improvement in remote sensing of low vegetation cover in arid regions by correcting for soil 'brightness'