NDVI (Normalized Difference Vegetation Index)

NDVI, or Normalized Difference Vegetation Index, is a tool used to measure the health and density of vegetation from satellite or aerial images. It works by comparing the amount of near-infrared light (which plants strongly reflect) to red light (which plants absorb). Healthy, lush vegetation reflects more near-infrared and less red light, resulting in higher NDVI values. Conversely, sparse or unhealthy plants have lower values. This index helps monitor plant growth, assess environmental conditions, and manage agriculture or natural resources effectively.