DocumentCode :
2153960
Title :
Improving coherence estimation for high-resolution polarimetric SAR interferometry
Author :
Vasile, Gabriel ; Trouvé, Emmanuel ; Ciuc, Mihai ; Bolon, Philippe ; Buzuloiu, Vasile
Author_Institution :
Lab. d´´Inf., Savoie Univ., Annecy-le-Vieux, France
Volume :
3
fYear :
2004
fDate :
20-24 Sept. 2004
Firstpage :
1796
Abstract :
This work presents a new method for filtering the coherence map issued from Synthetic Aperture Radar (SAR) polarimetric interferometric data. For each pixel of the interferogram, an adaptive neighborhood is determined by a region growing technique driven by the amplitude image information. Then, pixels in the derived adaptive neighborhood are complex averaged to yield the filtered value of the coherence, after performing a phase compensation step. The proposed method has been applied on airborne high-resolution polarimetric interferometric SAR images. Both subjective and objective performance analysis, including coherence edge detection, shows that the proposed method provides better results than the standard phase-compensated fixed multi-look filter and a linear adaptive coherence filter proposed by Lee et al.
Keywords :
airborne radar; filtering theory; geophysical signal processing; geophysical techniques; interferometry; radar imaging; radar polarimetry; remote sensing by radar; synthetic aperture radar; Synthetic Aperture Radar polarimetric interferometric data; airborne interferometric SAR images; amplitude image information; coherence edge detection; coherence estimation; coherence map; high-resolution polarimetric SAR interferometry; interferogram pixel; linear adaptive coherence filter; phase-compensated fixed multiple look filter; Adaptive filters; Computer vision; Filtering; Interferometry; Nonlinear filters; Phase measurement; Pixel; Polarization; Spatial resolution; Synthetic aperture radar;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Print_ISBN :
0-7803-8742-2
Type :
conf
DOI :
10.1109/IGARSS.2004.1370683
Filename :
1370683
Link To Document :
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