http://www.cnr.it/ontology/cnr/individuo/prodotto/ID187122

Blind estimation of interferometric SAR phase images through fuzzy matching-pursuits (Contributo in atti di convegno)

Type

Contributo in atti di convegno (Classe)
Prodotto della ricerca (Classe)

Label

Blind estimation of interferometric SAR phase images through fuzzy matching-pursuits (Contributo in atti di convegno) (literal)

Anno

2002-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1117/12.454180 (literal)

Alternative label

Bruno Aiazzi; Luciano Alparone; Stefano Baronti; Massimo Bianchini (2002)
Blind estimation of interferometric SAR phase images through fuzzy matching-pursuits
in SPIE Remote Sensing 2001: Image and Signal Processing for Remote Sensing VII, Tolosa, Francia, 17-21 Settembre 2001
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Bruno Aiazzi; Luciano Alparone; Stefano Baronti; Massimo Bianchini (literal)

Pagina inizio

59 (literal)

Pagina fine

69 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://spiedigitallibrary.org/proceedings/resource/2/psisdg/4541/1/59_1?isAuthorized=no (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume

Proceedings of SPIE Remote Sensing 2001: Image and Signal Processing for Remote Sensing VII (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

4541 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana

4541 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

11 (literal)

Note

Google Scholar (literal)
ISI Web of Science (WOS) (literal)
Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

\"Nello Carrara\" Research Institute on Electromagnetic Waves IROE-CNR, Via Panciatichi, 64, I-50127 Firenze, Italy DET - Department of Electronics and Telecommunications, University of Florence, Via Santa Marta, 3, I-50139 Firenze, Italy \"Nello Carrara\" Research Institute on Electromagnetic Waves IROE-CNR, Via Panciatichi, 64, I-50127 Firenze, Italy \"Nello Carrara\" Research Institute on Electromagnetic Waves IROE-CNR, Via Panciatichi, 64, I-50127 Firenze, Italy (literal)

Titolo

Blind estimation of interferometric SAR phase images through fuzzy matching-pursuits (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn

0-8194-4266-6 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume

S. B. Serpico (literal)

Abstract

This paper presents an original application of fuzzy logic to restoration of interferometric phase images from IFSAR, which are affected by zero-mean uncorrelated noise, whose variance depends on the underlying coherence, thus resulting in a nonstationary random process. Spatial filtering of the phase noise is recommended, either before phase unwrapping is accomplished, or simultaneously with it. In fact, phase unwrapping basically relies on a smoothness constraint of the phase field, which is severely hampered by the noise. Space-varying linear MMSE estimation is stated as a problem of matching pursuits, in which the estimator is obtained as an expansion in series of a finite number of prototype estimators, fitting the spatial features of the different statistical classes encountered, e.g., fringes, and steep slope areas. Such estimators are calculated in a fuzzy fashion through an automatic training procedure. The space-varying coefficients of the expansion are stated as degrees of fuzzy membership of a pixel to each of the estimators. Besides the fact that neither \"a priori\" knowledge on the noise variance is required, nor a particular signal model is assumed, a performance comparison on simulated noisy images highlights the advantages of the proposed approach. Results on simulated noisy versions of Lenna show a steady SNR improvement of almost 3 dB over Kuan's LLMMSE filtering, irrespective of noise model and intensity. Applications of the proposed filter to interferometric phase images demonstrate a superior ability of preserving fringes discontinuities, together with an effective smoothing performance, irrespective of local coherence characteristics. (literal)

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