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Speed-Up of GIS Processing Using Multicore Architectures

机译:使用多核架构加速GIS处理

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摘要

Today's abilities of gathering and storing data are not matched by the ability to process this vast amount of data. Such examples can be found in the field of remote sensing, where new satellite missions contribute to a continuous downstream of remotely sensed data. Processing of large remotely sensed datasets has a high algorithmic complexity and requires considerable hardware resources. As many of the pixel-level operations are parallelizable, data processing can benefit from multicore technology. In this paper we use Dynamic Data Flow Model of Computation to create a processing framework that is both portable and scalable, being able to detect the number of processing cores and also capable to dynamically allocating tasks in such manner to ensure the balance of the processing load on each core. The proposed method is used to accelerate a water detection algorithm from Landsat TM data and was tested on multiple platforms with different multicore configurations.
机译:如今,收集和存储数据的能力无法与处理大量数据的能力相提并论。这样的例子可以在遥感领域找到,在那里新的卫星任务为遥感数据的连续下游做出了贡献。大型遥感数据集的处理具有很高的算法复杂度,并且需要大量的硬件资源。由于许多像素级操作都是可并行化的,因此数据处理可以受益于多核技术。在本文中,我们使用计算的动态数据流模型来创建一个可移植和可扩展的处理框架,能够检测处理核心的数量,并且能够以这种方式动态分配任务以确保处理负载的平衡在每个核心上。该方法用于从Landsat TM数据加速水检测算法,并在具有不同多核配置的多个平台上进行了测试。

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