| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | mtc-m12.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZ3ukuKE/Bn5Ui |
| Repository | sid.inpe.br/sergio/2004/03.05.15.24 (restricted access) |
| Last Update | 2004:03.05.03.00.00 (UTC) marciana |
| Metadata Repository | sid.inpe.br/sergio/2004/03.05.15.24.50 |
| Metadata Last Update | 2018:06.05.00.40.49 (UTC) administrator |
| Secondary Key | INPE-10524-PRE/5999 |
| Citation Key | FreitasSilvDutr:2002:AsOpRa |
| Title | Assessment of operational radar satellite for monitoring land cover change in Amazônia  |
| Year | 2002 |
| Access Date | 2024, May 19 |
| Secondary Type | PRE CI |
| Number of Files | 1 |
| Size | 337 KiB |
| 2. Context | |
| Author | 1 Freitas, Corina da Costa 2 Silva Júnior, Lelio Walter P. 3 Dutra, Luciano Vieira |
| Resume Identifier | 1 2 3 8JMKD3MGP5W/3C9JHMA |
| Group | 1 DPI-INPE-MCT-BR 2 DSR-INPE-MCT-BR 3 DPI-INPE-MCT-BR |
| Conference Name | International Geoscience and Remote Sensing Symposium, (IGARSS). |
| Conference Location | Toronto |
| Date | 24-28 June 2002 |
| Publisher | INPE |
| Book Title | Proceedings |
| History (UTC) | 2015-05-21 17:25:13 :: administrator -> marciana :: 2002 2016-08-26 13:46:35 :: marciana -> administrator :: 2002 2018-06-05 00:40:49 :: administrator -> marciana :: 2002 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Keywords | Feature extraction Forestry Geological surveys Image analysis Landforms Iterative contextual mode Kappa coefficient Land cover change Optical imagery Progressive sequential feature selection Radar satellite Radar imaging Forests |
| Abstract | The objective of this paper is to verify the viability of using existing radar satellite (ERS and RADARSAT), as an operational tool for monitoring land cover in Amazônia. It is well known that C band radar data is not adequate for land applications, but as cloud cover in Amazônia is a constant problem, particularly in certain areas, radar data can help, as complimentary information, for change monitoring. In this paper ERS and RADARSAT images are classified using texture measures, in several classes of land use, and then the adequacy of using these classes for change detection is analyzed. Progressive sequential feature selection, using Kappa coefficient of agreement as a selection criterion, chooses a subset of the texture layers that maximizes that coefficient. It was observed that even for the best feature set, the Kappa coefficient was considered too low and unsuitable to be used for change detection. However, it is shown that this coefficient progressively increases when classes are merged sequentially. When only two classes are considered, identified as forest/non-forest, the overall accuracy is higher than 85%, (per cent) ,which was considered adequate for change detection. The classifications of the 1992, 1993 and 1996 ERS1/2 images over the Tapajós National Forest, Brazil, were performed using the iterative contextual mode (ICM)classifier. Deforestation was detected for those points changing from forest in one year to non-forest in other year, with very good agreement with the results obtained with optical imagery sequence. Similar results were obtained using RADARSAT imagery for the year 96. |
| Area | SRE |
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDPI > Assessment of operational... |
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Assessment of operational... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | 01026445.pdf |
| User Group | administrator |
| Reader Group | administrator marciana |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3EQCCU5 8JMKD3MGPCW/3ER446E |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.53.50 1 |
| Host Collection | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notes | |
| Empty Fields | affiliation archivingpolicy archivist callnumber contenttype copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor electronicmailaddress format isbn issn label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url versiontype volume |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |