tsavi

eolab.georastertools.processing.algo.tsavi(bands: ndarray) → ndarray

Compute the Transformed Soil Adjusted Vegetation Index The coefficient ranges from -1 to 1 in each pixel.

The function considers the bands of the input data in the following order : Red, NIR (Near Infra-Red).

\[TSAVI = \frac{0.7 (NIR - 0.7 RED - 0.9)}{0.7 NIR + RED + 0.08 (1 + 0.7^2)}\]

Parameters:

input_data (np.ndarray) – Numpy array of 3 dimensions (number of bands, number of lines, number of columns) with number of bands > 1.

Returns:

Numpy array of the size (number of lines, number of columns) containing the computed TSAVI.

References

Baret F., Guyot G., Major D., 1989. TSAVI: a vegetation index which minimizes soil brightness effects on LAI or APAR estimation. 12th Canadian Symposium on Remote Sensing and IGARSS 1990, Vancouver, Canada, 07/10-14.