The Amazon Deforestation Monitoring System: a large environmental geographic database developed on TerraLib and PostgreSQL
Presentation | Presented
- Vanildes Ribeiro, FUNCATE
- Gilberto Ribeiro, INPE
The Brazilian National Space Research Institute and Space Science, Technology and Applications Foundation developed a complete monitoring system, based on Terralib open source technology (http://terralib.org), in order to calculate the annual deforestation rates and to map the Brazilian Amazon. TerraLib implements the archiving of geographic vector and raster data, on a variety of proprietary and non-proprietary DBMS, including PostgreSQL. TerraLib supports methods for image and vector data processing and analysis. A client application, named TerraAmazon, was developed using C++ and the free graphic user interface QT (version 3), that could run on LINUX or Windows machines. The data is managed by PostgreSQL version 8.2, running on a LINUX Server. The application manages all data work flow, gathering circa 600 satellite images, preprocessing, segmenting and classifying these images, for further human interpretation and edition, on a concurrent multi-user environment. The database stores approximately 2 million complex polygons and is added annually with 20 gigabytes of full resolution satellite images, using TerraLib pyramidal resolution schema. A Web site is provided for seamless visualization and analysis of full resolution data, using TerraLib PHP extension and TerraLib OGC WMS server.