This tutorial demonstrates how to calculate NDVI using ERDAS Imagine Model Maker or Spatial Modeller The Normalized Difference Vegetation Index (NDVI) is an index of plant “greenness” or photosynthetic activity, and is one of the most commonly used vegetation indices. NDVI = (NIR — RED)/(NIR + RED) NDVI values range from +1.0 to -1.0. Areas ...
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