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- 2016
结合多种分解策略的遥感影像去相关拉伸并行处理方法
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Abstract:
提出了一种结合多种分解策略的遥感影像去相关拉伸并行处理方法,该方法根据不同步骤的特点采用不同任务分解策略:计算波段统计信息采用按波段进行任务分解,计算协方差矩阵采用按波段对进行任务分解,进行线性变换采用按数据块进行任务分解,实现了全过程的并行处理。在两台分别安装Windows 7和Linux操作系统的多核计算机下进行了OMIS机载高光谱影像和ASTER卫星影像的去相关拉伸并行处理实验,通过合理配置CPU核数和磁盘系统等,常用的12 ~ 16核计算机可取得最高约8倍的整体加速比。同时分析了影响整体加速性能的因素,给出了多核计算机用于遥感影像去相关拉伸并行处理的使用建议
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