Standard Normal Variate Filter

Normalizes spectra according to their standard devication.

Category	Preprocessing
Node
Parameters	(None)
Inputs	Input: the input data
Outputs	Output: the output data

Effect of the Filter

Calculates the average and the standard deviation of the spectra at each individual pixel. It then shifts and rescales the data so that the new average is zero and the new standard deviation is one.

The following plot shows what quantities the SNV filter calculates for an example spectrum:

And this plot shows the result of the SNV filter for the same spectrum:

See also

• Normalization Filter