Abstract
In this article, Fast Global K-Means (FGKM) for Synthetic Aperture Radar (SAR) image change detection is presented. On account of the time-consuming of FGKM algorithm and the real-time demand, we present a Parallel Fast Global K-Means (P-FGKM) algorithm. We parallelize the selection of initial cluster centers which is the most time-consuming step of FGKM algorithm. The proposed algorithm is implemented based on Open Computing Language (OpenCL). The experiments are carried out on a variety of heterogeneous computing devices, such as Multi-core CPU, GPU, Intel HD Graphics, Many Integrated Core (MIC). Experiment results show that the proposed algorithm can achieve a good speedup up to 86 times on such devices.
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