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Self-organizing GIS for solving problems of ecology and landscape studying Nikolay G. Markov, Alexandr A. Napryushkin Tomsk Polytechnical University, GIS laboratory, Tomsk, Russia e-mail: markov@ce.cctpu.edu.ru
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Self-organizing vector-raster GIS (SOVR GIS) solves the following tasks: Preliminary processing of the received remote sensing (RS) data (solving tasks of projection transforming, geo- referencing, linear and nonlinear filtration, spectral and geometrical transformation) Thematic processing of the processed RS data (automated interpretation) Spatial analysis of the extracted thematic information represented in a vector format (complex quantitative estimations of the researched objects and phenomena)
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Subsystem of preliminary processing Subsystem of self- organizing Subsystem of vector data visualization Interface shell of SOVR GIS Subsystem of interpretation and vectorization Subsystem of spatial analisys Subsystem of raster data visualization Data input- output subsystem Subsystem of 3D visualization Raster component Vector component Fig. 1. General structure of SOVR GIS
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Thematic processing - the stage of extracting the geometric information from preliminary processed aerospace images. SOVR GIS provides the facilities for automatized extraction of thematic information from aerospace images.
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Fig. 2. Automatized extraction of thematic information from aerospace images by means of SOVR GIS Kohonen’s neuronet classifier Preliminary processed aerospace image Vectorizing procedure Recognition procedure Self-organizing procedure Textural analysis procedure Cartographic sources Extended feature space Training data Vector thematic layers Spatial analysis Decisions
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Self-organizing procedure (decision making algorithm) Non-parametric classifiers Advanced Bayesian classifier Extended feature space aerospace image Recognized landscape objects Fig.3 Self-organizing procedure
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Fig. 4. Initial aerospace image of Tomsk-city (satellite RESURS-0, MSU-E scanner)
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Fig. 5. Obtaining training data from a map
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Fig. 6. Result of recognition. Red areas show the zones polluted with radioactive contaminants
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Fig. 6. Mapping forest types of Tomsk region with SOVR GIS (satellite RESURS-0, MSU-E scanner) Initial aerospace image Map Cedar Pine tree Cedar+Fir Classified image
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Self-organizing GIS for solving problems of ecology and landscape studying Nikolay G. Markov, Alexandr A. Napryushkin Tomsk Polytechnical University, GIS laboratory, Tomsk, Russia e-mail: markov@ce.cctpu.edu.ru
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