PSTOUZIDIS

Description

PSTOUZIDIS computes polarimetric discriminators from a fully polarimetric SAR (POLSAR) data set. The computed discriminators include the Touzi anisotropy, the degrees of minimum and maximum polarization response, and the difference between the maximum and minimum response.

Parameters

Name	Type	Length	Value range
Input: Input polarimetric SAR image *	Raster port	1 -
Output *	String	1 -

* Required parameter

Parameter descriptions

Input: Input polarimetric SAR image

Specifies the name of the input polarimetric SAR data set that contains the input complex polarimetric SAR data set, which must be either non-symmetrized or symmetrized fully polarimetric (quad-polarization) complex data . The input data set must be in covariance, coherence, or Kennaugh matrix format. It is suggested that the input data set have an equivalent number of looks (ENL) of at least 25. If the data set is single-look complex, an ENL of 25 could be achieved by applying a polarimetric filter (such as boxcar).

The input file must be a data set that has already been imported into the PCIDSK (.pix) format by SARINGEST, or it may be the key file name of any GDB-supported POLSAR data set in its distribution format. For more information and a complete list of supported POLSAR sensors and data products, see the SARINGEST Help.

Output

Specifies the name of the output file that will hold the polarimetric discriminators. The output file has the same dimensions as the input SAR image, and four channels. Their floating-point pixel values represent the four discriminators, which contain the maximum and minimum polarization response, the Touzi anisotropy, and the difference between the minimum and maximum response.

The specified file must not already exist.

Details

PSTOUZIDIS computes a number of polarimetric discriminators from a fully polarimetric SAR data set based on the methodology described in reference [1]. The procedure derives the maximum and minimum degrees of polarization and total intensity of the scattered wave [2].

The output image has four channels, whose real pixel values represent the degree of the maximum polarization response, degree of the minimum polarization response, Touzi anisotropy, and the difference between the maximum and minimum response.

References

[1] Touzi, R., Goze, S., le Toan, T., Lopes, A., and Mougin, E., "Polarimetric discriminators for SAR images", IEEE Transactions on Geoscience and remote Sensing, Vol. 30, No. 5, pp 973-980, 1992.

[2] Touzi, R., Charbonneau, F.J., Hawkins, R.K., and Vachon, P.W., "Ship Detection and Characterization using Polarimetric SAR", Canadian Journal of Remote Sensing, Vol. 30, No. 3, pp 552-559, 2004.