Question:medium
Which are the two wavelength bands of light spectrum used to calculate the Normalised Difference Vegetation Index (NDVI) in remote sensing?
Which are the two wavelength bands of light spectrum used to calculate the Normalised Difference Vegetation Index (NDVI) in remote sensing?
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NDVI is a widely used vegetation index in remote sensing to monitor vegetation health, and it relies on the contrast between the NIR and Red bands to detect plant biomass and health.
Updated On: Jan 13, 2026
- Green and Blue
- Green and Near Infrared
- Near Infrared and Red
- Red and Green
Show Solution
The Correct Option is C
Solution and Explanation
The Normalized Difference Vegetation Index (NDVI), a metric derived from remote sensing data, quantifies vegetation health. It is computed by subtracting the Red band reflectance from the Near Infrared (NIR) band reflectance and dividing by their sum. The calculation is expressed as:\[NDVI = \frac{NIR - Red}{NIR + Red}\]Consequently, the essential spectral bands for NDVI calculation are Near Infrared and Red.This establishes Near Infrared and Red as the correct components for calculation.
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