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		<doi>10.1109/IGARSS.2005.1526807</doi>
		<isbn>0780390504</isbn>
		<isbn>9780780390508</isbn>
		<citationkey>SantosMaldGraç:2005:NeChDe</citationkey>
		<title>New change detection technique using ASTER and CBERS-2 images to monitor Amazon tropical forest</title>
		<year>2005</year>
		<secondarytype>PRE CI</secondarytype>
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		<author>Santos, João Roberto dos,</author>
		<author>Maldonado, Francisco Dario,</author>
		<author>Graça, P. M. L. A.,</author>
		<group>DSR-INPE-MCT-BR</group>
		<group>DSR-INPE-MCT-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais, Divisão de Sensoriamento Remoto (INPE, DSR)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas da Amazônia (INPA)</affiliation>
		<electronicmailaddress>jroberto@dsr.inpe.br</electronicmailaddress>
		<electronicmailaddress>francis@dsr.inpe.br</electronicmailaddress>
		<electronicmailaddress>pmlag@inpa.gov.br</electronicmailaddress>
		<conferencename>International  Geoscience and Remote Sensing Symposium, 5 ( IGARSS).</conferencename>
		<conferencelocation>Seoul</conferencelocation>
		<date>25-29 July</date>
		<publisher>IEEE International</publisher>
		<volume>7</volume>
		<pages>5026-5028</pages>
		<booktitle>Proceedings</booktitle>
		<transferableflag>1</transferableflag>
		<contenttype>External Contribution</contenttype>
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		<keywords>Charge coupled devices, Degradation, Forestry, Monitoring, Radiometry, Sensors, Thermal stratification, Threshold elements, Timber, Amazon, CBERS-2, Change detection, Land cover, Tropical forests, Demodulation, Detection, Forests, Radiometry.</keywords>
		<abstract>With the availability of CCD/CBERS-2 images, theobjective of this  research is to show the technique on Radiometric rotation controlled by a no-change axis (RCEN), using a multi-temporal comparison with the image from ASTER/TERRA. The result of this technique is a changedetection image derived from the date integration of both sensors mentioned, whose continuous image (floating-point numbers) was transformed into a thematic image through the procedure of slicing and labelling with four thresholds. This allows the stratification of spectral attributes in five thematic classes: two related to degradation, two referring to regeneration and one of no-change. From this point on a map of changes 2003/2004 was generated, illustrating the distribution of the five thematic categories mentioned at the transition forest zone, which is suffering strongly under the impact of the agricultural frontier, cattle raising and also, timber exploitation activities.</abstract>
		<area>SRE</area>
		<language>en</language>
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