Title :
Polarimetric edge detector based on the complex Wishart distribution
Author :
Skriver, Henning ; Schou, Jesper ; Nielsen, Allan Aasbjerg ; Conradsen, Knut
Author_Institution :
DTU Dept., Tech. Univ. Denmark, Lyngby, Denmark
Abstract :
A new edge detector for polarimetric SAR data has been developed. The edge detector is based on a newly developed test statistic for equality of two complex covariance matrices following the complex Wishart distribution and an associated asymptotic probability for the test statistic. The new polarimetric edge detector provides a constant false alarm rate and it utilizes the full polarimetric information. The edge detector has been applied to polarimetric SAR data from the Danish dual-frequency, airborne polarimetric SAR, EMISAR. The results show clearly an improved edge detection performance for the full polarimetric detector compared to single channel approaches
Keywords :
airborne radar; edge detection; radar polarimetry; synthetic aperture radar; Danish dual-frequency airborne polarimetric SAR; EMISAR; associated asymptotic probability; complex Wishart distribution; complex covariance matrices; edge detection performance; false alarm rate; full polarimetric detector; polarimetric SAR data; polarimetric edge detector; polarimetric information; test statistic; Backscatter; Covariance matrix; Detectors; Gamma ray detection; Image edge detection; Probability; Scattering; Statistical analysis; Statistical distributions; Testing;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.978286
