Title :
A Comparative Study of Speckle Filtering In Polarimetric Radar SAR Images
Author :
Bouchemakh, L. ; Smara, Y. ; Boutarfa, S. ; Hamadache, Z.
Author_Institution :
Fac. of Electron. & Comput. Sci., Univ. of Sci. & Technol., Algiers
Abstract :
Speckle appearing in polarimetric synthetic aperture radar (SAR) images is generated by coherent processing of radar signals. It hampers perception and extraction of fine details in the image. That is why speckle reducing is necessary before images analysis because Speckle filtering of polarimetric synthetic aperture radar (POLSAR) image has a great impact on the accuracy of terrain and land-use classification and scene interpretation. In this communication, we studied and tested several linear and non linear methods (Boxcar, Lee, Novak, Russell and Saad filters) to remove speckle in polarimetric SAR images. The single look complex (SLC) images to be filtered were acquired on the P band in airborne polarimetric mode. The evaluation of each filter is based on the following principal criteria: i) Its capacity to smooth the homogeneous areas, ii) Its aptitude to preserve contours, and iii) its capacity to preserve polarimetric information
Keywords :
filtering theory; radar imaging; radar polarimetry; synthetic aperture radar; SAR image; airborne polarimetric mode; polarimetric synthetic aperture radar image; radar signal; speckle filtering; Filtering; Filters; Image generation; Polarimetric synthetic aperture radar; Radar imaging; Radar polarimetry; Radar signal processing; Signal generators; Speckle; Synthetic aperture radar; Adaptive Vectorial Filtering; Radar polarimetry; speckle filtering; synthetic aperture radar;
Conference_Titel :
Information and Communication Technologies: From Theory to Applications, 2008. ICTTA 2008. 3rd International Conference on
Conference_Location :
Damascus
Print_ISBN :
978-1-4244-1751-3
Electronic_ISBN :
978-1-4244-1752-0
DOI :
10.1109/ICTTA.2008.4530040
