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Comparison of Digital Maps: Recognition and Quantitative Measure of Changes

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A new methodology of comparing digital raster maps was proposed which allows not only detecting changes in the maps, but also obtaining quantitative measures of the importance of selected differences. Procedure of object interpretation of satellite images and forming of OMT (Object Map of Territory) is described. A list of allowable differences between two OMTs is defined. Two steps technique of quantitative measuring is proposed. At the first stage functions are constructed for calculating local measures of differences in the amount, areas and locations of objects on the map, as well as relations between the objects. In the second stage local measures are used to calculate the integral measure in order to get generalized assessment of difference between maps. The methods for constructing functions which calculate local and integral measures of differences are described. Examples of comparing and measuring the differences between OMTs are provided. Obtained results by utilizing this technique can be used to analyze trends, forecast of development and might be helpful for choosing most efficient scenarios for sustainable spatial planning and land management.
Cite this paper
Spivak, L. , Spivak, I. , Sokolov, A. and Voinov, S. (2014) Comparison of Digital Maps: Recognition and Quantitative Measure of Changes. Journal of Geographic Information System, 6, 415-422. doi: 10.4236/jgis.2014.65036.

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