@InProceedings{ShimabukuroAmarAherPiet:1997:WiSwMo,
               author = "Shimabukuro, Yosio Edemir and Amaral, Silvan and Ahern, Frank J. 
                         and Pietsch, Ron W.",
                title = "Clasification and monitoring the Tapajos National Forest Region 
                         using SAR (RADARSAT - Standard Mode and SAREX - Wide Swath 
                         Mode)and Landsat Thematic Mapper Data",
                 year = "1997",
                pages = "103--115",
         organization = "Geomatics in the Era od RADARSAT International Conference.",
             keywords = "VEGETACAO, FLORESTA NACIONAL DE TAPAJOS (PA), FLORESTAS, 
                         MONITORAMENTO, MAPEADOR TEMATICO (LANDSAT), IMAGENS LANDSAT, 
                         RADARSAT, IMAGENS DE RADAR, SAR, RADAR DE ABERTURA SINTETICA.",
             abstract = "The objective of this research is to evaluate the potential of 
                         RADARSAT standard mode images for forest type mapping and land 
                         cover change detection. Other sensors such as Landsat TM and 
                         Airborne SAR images were used for comparitive analysis. An area 
                         including the Tapajos National Forest, Para State, Brazil and its 
                         immediate surroundings was chosen for this investigation. The 
                         surrounding area is comprised of numerous small plots occupied by 
                         agriculture activities including abandoned areas with secondary 
                         forest. The national forest is mainly undisturbed primary forest. 
                         A shade fraction image was derived from a 1988 Landsat TM image to 
                         enhance the deforested areas in this region, i.e., this image 
                         shows the contrast between forest (medium amount of shade - 
                         bright)and non-forest (low amount of shade - dark)areas and is 
                         used as ancillary information to analyze the SAR data. The sensors 
                         that were used show a good association with an recent clear cut 
                         areas, especially the S7D image which has a high incidence angle. 
                         The difference images derived from multitemporal data showed the 
                         changes that occurred between 1988 and 1996. Several other image 
                         enhancement techniques were applied to the RADARSAT data for 
                         mapping forest types. The preliminary results of image 
                         segmentation of RADARSAT data is also encouraging and is 
                         pursued.",
  conference-location = "Ottawa, CA",
      conference-year = "May 25-30 1997",
                label = "8330",
         organisation = "Canadian International Development Agency",
           targetfile = "INPE 7017.pdf",
        urlaccessdate = "30 abr. 2024"
}