Multiresolution Local-Statistics Speckle Filtering Based on a Ratio Laplacian Pyramid (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Multiresolution Local-Statistics Speckle Filtering Based on a Ratio Laplacian Pyramid (Articolo in rivista) (literal)

Anno

• 1998-01-01T00:00:00+01:00 (literal)

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

• 10.1109/36.718850 (literal)

Alternative label

• Bruno Aiazzi; Luciano Alparone; Stefano Baronti (1998)
  Multiresolution Local-Statistics Speckle Filtering Based on a Ratio Laplacian Pyramid
  in IEEE transactions on geoscience and remote sensing; IEEE-Institute Of Electrical And Electronics Engineers Inc., Piscataway (Stati Uniti d'America)
  (literal)

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

• Bruno Aiazzi; Luciano Alparone; Stefano Baronti (literal)

Pagina inizio

• 1466 (literal)

Pagina fine

• 1476 (literal)

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

• Special Issue on the 1997 IEEE International Geoscience and Remote Sensing Symposium (IGARSS '97) (literal)

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

• http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=718850 (literal)

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

• 36 (literal)

Rivista

• IEEE transactions on geoscience and remote sensing (Rivista)

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

• 11 (literal)

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

• 5 (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, I-50127 Firenze, Italy Department of Electronic Engineering, University of Florence, I-50139 Firenze, Italy \"Nello Carrara\" Research Institute on Electromagnetic Waves, IROE-CNR, I-50127 Firenze, Italy (literal)

Titolo

• Multiresolution Local-Statistics Speckle Filtering Based on a Ratio Laplacian Pyramid (literal)

Abstract

• Speckle filtering in synthetic aperture radar (SAR) images is a key point to facilitate applicative tasks. A filter aimed at speckle reduction should energetically smooth homogeneous regions, while preserving point targets, edges, and linear features. A compromise, however, should be arranged on textured areas. In this work, a ratio Laplacian pyramid (RLP) is introduced to match the signal-dependent nature of speckle noise. Local statistics filtering is applied to the different spatial resolutions of the RLP of a speckled image. For natural scenes, each pyramid layer is characterized by an signal-to-noise ratio (SNR) increasing as resolution decreases. Thus, each filter may be adjusted to achieve adaptivity also across scales. In addition, the estimation of the local statistics driving the filter is more accurate thanks to the multiresolution framework. A complete procedure is setup, and a general formulation, in which the variance of speckle is theoretically derived at each resolution, is developed. Experiments carried out on remotely sensed optical images corrupted with synthetic speckle, as well as on true SAR images, show the potentiality of the pyramid-based approach compared with other established despeckle algorithms, in terms both of SNR improvements and of enhancement in visual quality. (literal)

Editore

• IEEE-Institute Of Electrical And Electronics Engineers Inc. (Editore)

Prodotto di

• Institute of applied physics \"Nello Carrara\" (IFAC) (Istituto)
• Sistemi, metodi di elaborazione ed applicazioni di telerilevamento aerospaziale (ICT.P10.005.001) (Modulo)

Autore CNR

• LUCIANO ALPARONE (Unità di personale esterno)
• BRUNO AIAZZI (Unità di personale interno)
• STEFANO BARONTI (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Multiresolution Local-Statistics Speckle Filtering Based on a Ratio Laplacian Pyramid" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• BRUNO AIAZZI (Unità di personale interno)
• STEFANO BARONTI (Unità di personale interno)
• LUCIANO ALPARONE (Unità di personale esterno)

Prodotto

• Institute of applied physics \"Nello Carrara\" (IFAC) (Istituto)
• Sistemi, metodi di elaborazione ed applicazioni di telerilevamento aerospaziale (ICT.P10.005.001) (Modulo)

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

• IEEE transactions on geoscience and remote sensing (Rivista)

Editore di

• IEEE-Institute Of Electrical And Electronics Engineers Inc. (Editore)

Insieme di parole chiave di

• Keywords of "Multiresolution Local-Statistics Speckle Filtering Based on a Ratio Laplacian Pyramid" (Insieme di parole chiave)