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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 21, Iss. 8 — Aug. 30, 2004
  • pp: 1455–1464

General adaptive-neighborhood technique for improving synthetic aperture radar interferometric coherence estimation

Gabriel Vasile, Emmanuel Trouvé, Mihai Ciuc, and Vasile Buzuloiu  »View Author Affiliations


JOSA A, Vol. 21, Issue 8, pp. 1455-1464 (2004)
http://dx.doi.org/10.1364/JOSAA.21.001455


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Abstract

A new method for filtering the coherence map issued from synthetic aperture radar (SAR) interferometric data is presented. For each pixel of the interferogram, an adaptive neighborhood is determined by a region-growing technique driven by the information provided by the amplitude images. Then pixels in the derived adaptive neighborhood are complex averaged to yield the filtered value of the coherence, after a phase-compensation step is performed. An extension of the algorithm is proposed for polarimetric interferometric SAR images. The proposed method has been applied to both European Remote Sensing (ERS) satellite SAR images and 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 multilook filter and the Lee adaptive coherence filter.

© 2004 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(100.2650) Image processing : Fringe analysis
(280.6730) Remote sensing and sensors : Synthetic aperture radar

History
Original Manuscript: August 19, 2003
Revised Manuscript: March 24, 2004
Manuscript Accepted: March 24, 2004
Published: August 1, 2004

Citation
Gabriel Vasile, Emmanuel Trouvé, Mihai Ciuc, and Vasile Buzuloiu, "General adaptive-neighborhood technique for improving synthetic aperture radar interferometric coherence estimation," J. Opt. Soc. Am. A 21, 1455-1464 (2004)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-21-8-1455


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