Characterization of singular structures in polarimetric SAR images by wavelet frames

G. F. De Grandi*, P. Bunting, A. Bouvet, T. L. Ainsworth

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddTrafodion Cynhadledd (Nid-Cyfnodolyn fathau)

Crynodeb

Discontinuities in polarimetric SAR backscattered intensity (edges and point targets) can be characterized by a mathematical model. This paper presents a technique based on the Lipschitz regularity of an underlying singular function for detecting and interpreting such discontinuities. Numerical estimators of the Lipschitz parameters (exponent, swing and smoothing kernel variance) are implemented by a multi-voice wavelet frame transform. Local (one point in space) supervised estimates of the parameters and their dependence on polarization state are obtained by extracting the trajectory of the wavelet modulus maxima in the space-scale-polarization domain and by a non-linear regression with respect to a theoretical trend with scale. Global image-wide approximations of the Lipschitz parameters are also proposed, these aiming at a spatial description of the discontinuity's type, sharpness, and dependence on the polarization state. Examples are reported concerning experiments using simulated and real SAR polarimetric data.

Iaith wreiddiolSaesneg
TeitlInternational Geoscience and Remote Sensing Symposium (IGARSS)
Tudalennau13-16
Nifer y tudalennau4
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 2011
Digwyddiad2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 - Vancouver, BC, Canada
Hyd: 24 Gorff 201129 Gorff 2011

Cynhadledd

Cynhadledd2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
Gwlad/TiriogaethCanada
DinasVancouver, BC
Cyfnod24 Gorff 201129 Gorff 2011

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