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The multi-sensor land classification system (LCS): automatic multitemporal land use classification system for multi-resolution data.

By Beccati A., Folegani M., D'Elia S., Fabrizi R., Natali S. and Vittuari L.


Providing land use/land cover change maps through the use of satellite imagery is very challenging and demanding in terms of\ud human interaction, mainly because of limited process automation. One main cause is that most of land use/land cover change\ud applications require multi-temporal acquisitions over the same area, that introduces the need for accurate pre-processing of the\ud dataset, in both geo-referencing and radiometry. Moreover, single multi-spectral images can be hundred of megabytes in size and\ud therefore image time series are even more difficult to be handled and processed in real time. The approach here proposed foresees\ud the use of a robust land cover classification system named SOIL MAPPER® to reduce input data size by assigning a semantic\ud meaning (in the land cover domain) to each pixel of a single image. Land cover transitions and land use maps can be expressed as\ud evolutions of land cover classes (features) on temporal domain. This permits to define ‘trajectories’ in the features – time space, that\ud define specific transition or periodic behaviour. The target system, named Land Classification System, provides fully automatic and\ud real time land use/land cover change analysis and includes fundamental sub-systems for accurate radiometric calibration, accurate\ud geo-referencing (with geolocation within the pixel size) and accurate remapping onto an Earth fixed grid. The characteristics of the\ud selected pre-classification system and Earth fixed grid allow general application across different sensors. Land Classification System\ud has been prototyped over 15 years of global (A)ATSR data and foresees integration of over 3 years of regional ALOS-AVNIR-2\ud data

Topics: Land Cover, Land Use, Modelling, Web based, Global, Multiresolution, Multitemporal, System
Publisher: Wagner W., Székely B.
Year: 2010
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