Question:
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: Apr 15, 2025
- Green and Blue
- Green and Near Infrared
- Near Infrared and Red
- Red and Green
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The Correct Option is C
Solution and Explanation
The Normalized Difference Vegetation Index (NDVI) is a remote sensing measurement used to assess vegetation health. It is calculated using the difference between the Near Infrared (NIR) and Red bands of the light spectrum. The formula for NDVI is:
\[
NDVI = \frac{NIR - Red}{NIR + Red}
\]
Thus, the two wavelength bands used to calculate NDVI are Near Infrared and Red.
Therefore, the correct answer is (C) Near Infrared and Red.
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