An approach to the dynamic formation (adjustment) of schedules for distributed photogrammetric image processing in a network of ground centers included in the United geographically distributed information system for receiving and processing Earth remote sensing data from space is considered. Having the fullest satisfaction of requirements of consumers to the satellite images of necessary areas, the approach provides the formation of self-organizing B2B enterprises in the specified network providing information, software and hardware resources of the ground-based facilities of various departmental and other accessories for photogrammetric processing of any received images of the area from the the United geographically distributed information system. It is shown, that a search in B2B enterprise nodes and borrowing the required resources will allow ground centers to flexibly scale physical and virtual means of photogrammetric processing of Earth remote sensing data, quickly form their local structural and functional organizations depending on the current properties of the consumer requests flow for receiving Earth remote sensing data in the United geographically distributed information system, characteristics of the flow of terrain survey materials from orbital monitoring tools, and also take into account the visual and measuring properties of images of the area subject to photogrammetric processing. A method for truncating the set of potential performers of the application in accordance with the existing semantic and other restrictions on the composition of the desired set of performers is proposed. Also mechanisms to encourage ground centers to provide idle resources to B2B enterprise nodes are proposed. They are based on the possibility of receiving monetary or other remuneration from a ground center for participating in distributed application servicing. The development of a well-known model of a self-organizing B2B enterprise creates conditions for a more efficient organization of servicing the flow of applications in the United geographically distributed information system by attracting unused software, information and hardware resources of ground centers of various departmental affiliations.
Федеральное государственное унитарное предприятие «18 Центральный научно-исследовательский институт» Министерства обороны Российской Федерации, г. МоскваПриведён метод оперативного ортотрансформирования космических изображений, построенный на комплексировании орбитального и полиномиального методов фотограмметрической обработки изоб-ражений. Идея метода заключается в фрагментарном формировании ортоизображения. На космических изображениях выделяются фрагменты (четырёхугольники) таких размеров, геометрические связи между элементами которых с достаточной точностью описываются двумерным полиномом первого порядка. Соседние фрагменты имеют общие вершины по линии соприкосновения, что обеспечивает целостность формируемого ортоизображения. Положение фрагмента (координат его вершин) определяется орбиталь-ным методом с учётом рельефа местности, что при малых размерах фрагментов обеспечивает учёт рель-ефа для всех точек фрагмента. Для возможности использования орбитального метода применяются опе-рации по определению начальных значений углов ориентации бортовой специальной аппаратуры косми-ческого аппарата и законов изменения этих углов в процессе съёмки с последующим уточнением этих величин на основе координат четырёх опорных точек. Соответствие между толерантными точками фрагментов исходного и формируемого изображения осуществляется на основе моделей, реализация которых имеет меньшую вычислительную сложность по сравнению с реализацией на основе орбиталь-ных методов. Экспериментальная апробация предлагаемого метода показала, что использование метода оперативного ортотрансформирования позволило в среднем сократить более чем в 4 раза время проведе-ния фотограмметрической обработки космических изображений при сопоставимой точности получения результирующего изображения. Земли, космическое изображение, фотограмметрическая обработ-ка, орбитальный метод, полиномиальный метод, ортотрансформирование. Дистанционное зондирование
An approach to the dynamic formation (adjustment) of schedules for distributed photogrammetric image processing in a network of ground centers included in the United geographically distributed information system for receiving and processing Earth remote sensing data from space is considered. Having the fullest satisfaction of requirements of consumers to the satellite images of necessary areas, the approach provides the formation of self-organizing B2B enterprises in the specified network providing information, software and hardware resources of the ground-based facilities of various departmental and other accessories for photogrammetric processing of any received images of the area from the the United geographically distributed information system. It is shown, that a search in B2B enterprise nodes and borrowing the required resources will allow ground centers to flexibly scale physical and virtual means of photogrammetric processing of Earth remote sensing data, quickly form their local structural and functional organizations depending on the current properties of the consumer requests flow for receiving Earth remote sensing data in the United geographically distributed information system, characteristics of the flow of terrain survey materials from orbital monitoring tools, and also take into account the visual and measuring properties of images of the area subject to photogrammetric processing. A method for truncating the set of potential performers of the application in accordance with the existing semantic and other restrictions on the composition of the desired set of performers is proposed. Also mechanisms to encourage ground centers to provide idle resources to B2B enterprise nodes are proposed. They are based on the possibility of receiving monetary or other remuneration from a ground center for participating in distributed application servicing. The development of a well-known model of a self-organizing B2B enterprise creates conditions for a more efficient organization of servicing the flow of applications in the United geographically distributed information system by attracting unused software, information and hardware resources of ground centers of various departmental affiliations.
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