18.2.1.2 Vegetation Index Data
The most widely used vegetation index is the Normalized Difference Vegetation
Index (NDVI) and the Vegetation Condition Index (VCI). NDVI, first proposed in
1969, is calculated from the difference of the surface reflectances between the visible
Fig. 18.1 (continued)
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The most widely used vegetation index is the Normalized Difference Vegetation
Index (NDVI) and the Vegetation Condition Index (VCI). NDVI, first proposed in
1969, is calculated from the difference of the surface reflectances between the visible
Fig. 18.1 (continued)
18 Design and Implementation of Geospatial Data Services for Agriculture
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