| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | marte.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Repository | dpi.inpe.br/lise/2004/07.19.16.23 | |||
| Last Update | 2005:02.08.11.49.46 (UTC) administrator | |||
| Metadata Repository | dpi.inpe.br/lise/2004/07.19.16.23.45 | |||
| Metadata Last Update | 2018:06.06.02.48.00 (UTC) administrator | |||
| Secondary Key | INPE-6194-PRE/2283 | |||
| ISBN | 85-17-00014-5 | |||
| Citation Key | DutraSant:1996:EfSpFi | |||
| Title | The effect of speckle filtering on SAR texture discrimination  | |||
| Format | [CD-ROM] | |||
| Year | 1996 | |||
| Secondary Date | 19970611 | |||
| Access Date | 2024, May 19 | |||
| Secondary Type | PRE CN | |||
| Number of Files | 1 | |||
| Size | 547 KiB | |||
| 2. Context | ||||
| Author | 1 Dutra, Luciano Vieira 2 Sant'Anna, Sidnei João Siqueira | |||
| Resume Identifier | 1 8JMKD3MGP5W/3C9JHMA | |||
| Group | 1 DPI-INPE-MCT-BR 2 DPI-INPE-MCT-BR | |||
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 dutra@dpi.inpe.br 2 sidnei@dpi.inpe.br | |||
| Editor | Krug, Thelma | |||
| e-Mail Address | erich@sid.inpe.br | |||
| Conference Name | Simpósio Brasileiro de Sensoriamento Remoto, 8 (SBSR). | |||
| Conference Location | Salvador | |||
| Date | 14-19 abr. 1996 | |||
| Publisher | INPE | |||
| Publisher City | São José dos Campos | |||
| Pages | 839-844 | |||
| Book Title | Anais | |||
| Tertiary Type | Workshop - Sessao Tecnica Radar | |||
| Organization | Instituto Nacional de Pesquisas Espaciais | |||
| History (UTC) | 2005-01-07 15:45:27 :: lise -> administrator :: 2009-06-30 13:55:31 :: administrator -> erich@sid.inpe.br :: 2010-05-14 02:50:26 :: erich@sid.inpe.br -> marciana :: 2011-02-16 12:53:02 :: marciana -> administrator :: 1996 2018-06-06 02:48:00 :: administrator -> :: 1996 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Keywords | PROCESSAMENTO DIGITAL DE IMAGENS FLORESTA NACIONAL DO TAPAJOS (BA) RADAR DE ABERTURA SINTETICA SAR IMAGENS DE RADAR FILTRO SPECKLE TEXTURA | |||
| Abstract | In tropical ecology studies, forest classification is a key issue. Although there is no widely accepted forest classification criterion, it is recognized that texture is an important factor to discriminate forest types and other land cover, particularly when using radar images. Synthetic Aperture Radar (SARA)images, however, are contaminated by a multiplicative noise, known as speckle, wich disturbs the texture identification. Several filters have been proposed to atenuate this kind of noise, but the effect of these filters on texture is not well known. In this paper, textures are modelled by two-dimensional autorregressive (AR-2D)models. These models are estimated for each one of the samples of SAR textures before and after speckle filtering. Eight samples of primary forest and seven samples of non-forest (pasture and agricultural crops)were collect from SAREX data (C-band, HH polarization, 6m resolution, 6 looks)in the Tapajos National Forest (Flona)region in Para state, Brazil. All these samples were filtered by a 3 x 3 Box filter and a 3 x 3 Frost filter. Euclidean distances were computed between the model coefficient vector of the samples and the average coefficient vector for the two classes (defined here as the class vectors)for the unfiltered and filtered cases separately. For all cases the coefficient vectors formed two separated clusters, corresponding to each one of the classes, in a non-linear mapping of the coefficient space. The conclusions are: AR modelling is an effective method to identify and discriminate radar texture. The discriminatory power, however, is higher using the unfiltered channels than when the simple Box and the Frost filter are used. | |||
| Area | SRE | |||
| Type | Processamento de Imagens | |||
| doc Directory Content | access | |||
| source Directory Content |
| |||
| agreement Directory Content | there are no files | |||
| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/dpi.inpe.br/lise/2004/07.19.16.23 | |||
| zipped data URL | http://urlib.net/zip/dpi.inpe.br/lise/2004/07.19.16.23 | |||
| Language | En | |||
| Target File | T210.pdf | |||
| User Group | administrator erich@sid.inpe.br | |||
| Visibility | shown | |||
| Read Permission | allow from all | |||
| 5. Allied materials | ||||
| Mirror Repository | dpi.inpe.br/marte@80/2007/10.17.19.59 | |||
| Next Higher Units | 8JMKD3MGPCW/3EQCCU5 | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.53.50 1 | |||
| Dissemination | <E> | |||
| Host Collection | dpi.inpe.br/banon/2003/12.10.19.30 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist callnumber contenttype copyholder copyright creatorhistory descriptionlevel documentstage doi edition identifier issn label lineage mark nextedition notes numberofvolumes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarymark serieseditor session shorttitle sponsor subject tertiarymark url versiontype volume | |||