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The subject matter of the article is applied information technology of thematic segmentation of opticalelectronic images from on-board systems of remote sensing of the Earth. The goal is to develop an applied information technology for thematic segmentation of optical-electronic images from on-board Earth remote sensing systems using the system modeling methodology IDEF0. The tasks are: analysis of features of optical-electronic images, formulation of requirements for methods, techniques and information technologies of thematic segmentation of optical-electronic images from on-board systems of remote sensing of the Earth, development of applied information technology for thematic segmentation of optical-electronic images from on-board systems of remote sensing of the Earth. The methods used are: methods of probability theory, mathematical statistics, methods of optimization, mathematical modeling and digital image processing, analytical and empirical methods of comparative research. The following results were obtained. In accordance with the syntax and semantics of IDEF0, the applied information technology of thematic segmentation of optical-electronic images from on-board systems of remote sensing of the Earth can be presented in the form of: a tuple, an upper child diagram, and child diagrams. A block diagram of the algorithm that implements the methods of applied information technology of thematic segmentation of optical-electronic images from on-board systems of remote sensing of the Earth is given. A block diagram of the algorithm that implements the methods of applied information technology of thematic segmentation of optical-electronic images from on-board systems of remote sensing of the Earth is given. Conclusions. The scientific novelty of the results is as follows: an applied information technology has been developed for thematic segmentation of optical-electronic images from on-board systems of remote sensing of the Earth, which, unlike the known ones, use the system modeling methodology IDEF0, which is based on the SADT structural analysis and design method.

APPLIED INFORMATION TECHNOLOGY OF THEMATIC SEGMENTATION OF OPTICAL-ELECTRONIC IMAGES FROM ON-BOARD SYSTEMS OF REMOTE SENSING OF THE EARTH