Landsat Surface Reflectance-derived Soil Adjusted Vegetation Index (SAVI) are produced from Landsat 4–5 Thematic Mapper (TM), Landsat 7 Enhanced Thematic Mapper Plus (ETM+), and Landsat 8-9* Operational Land Imager (OLI)/Thermal Infrared Sensor (TIRS) Collection 1 and Collection 2 scenes that have been processed to Landsat Level-2 Surface ...

2023年5月15日 · This image displays a (left) Landsat Surface Reflectance (SR) and (right) the SR-derived Landsat Surface Reflectance Soil Adjusted Vegetation Index (SAVI). (Landsat 9, WRS-2 Path 44 Row 33, Acquired September 24, 2022.) Visit the Landsat Surface Reflectance-Derived Spectral Indices web page for more information about this product.

In an attempt to improve NDVI, Huete [1] developed a vegetation index that accounted for the differential red and near-infrared extinction through the vegetation canopy. The index is a transformation technique that minimizes soil brightness influences from spectral vegetation indices involving red and near-infrared (NIR) wavelengths.

The Soil-Adjusted Vegetation Index (SAVI) method is a vegetation index that attempts to minimize soil brightness influences using a soil-brightness correction factor. This is often used in arid regions where vegetative cover is low, and it outputs values between -1.0 and 1.0. SAVI = ((NIR - Red)/(NIR + Red + L)) * (1 + L)

Soil Adjusted Vegetation Index (SAVI) is similar to NDVI, these enhancements are useful, because SAVI accounts for variations in soils. SAVI is calculated as a ratio between the near-infrared (NIR), red (RED), and L (Vegetation cover current factor).

2024年12月2日 · The Soil Adjusted Vegetation Index (SAVI) was made to help assess plant cover in places where soil brightness changes can confuse regular vegetation indices, like NDVI. SAVI uses a soil adjustment factor to lessen the effect of bare soil on the vegetation signal, giving a more accurate picture of plant health.

2020年9月28日 · Compute SAVI for Desert Areas. SAVI is used to correct Normalized Difference Vegetation Index (NDVI) for the influence of soil brightness in areas where vegetative cover is low.

2024年11月15日 · SAVI is a vegetation index that minimizes the influence of soil brightness when assessing plant health. Bright or reflective soils can lead to inaccurate readings of plant health by reflecting more light when soil is exposed. The SAVI equation includes a soil adjustment factor, which is effective for areas with sparse vegetation or bare soil.

2015年7月8日 · Step 1: Calculating Reflectance value from the Satellite data. Step 2: Correcting the Reflectance value with sun angle. Step 3: Calculating NDVI from 4th and 5th bands. Step 4: Calculating SAVI from Reflectance. Step 5: Calculating Tasseled cap indices. Step 6: Tasseled cap Brightness indices.

2019年2月1日 · "The Soil-Adjusted Vegetation Index (SAVI) is a vegetation index that attempts to minimize soil brightness influences using a soil-brightness correction factor. This is often used in arid regions where vegetative cover is low. SAVI = ((NIR - Red) / (NIR + Red + L)) x (1 + L) NIR = pixel values from the near infrared band