【摘要】 本文概述了地震应急中遥感应用的现状和并行处理技术在遥感分析处理中的应用。初步探讨了在遥感震害分析中并行计算技术的应用方案,并采用比值法和相关系数法,利用福卫二号卫星遥感数据对汶川8.0级地震造成的北川县城震害进行了震前震后变化检测并行处理。将结果与专业图像分析处理软件的处理结果进行了分析对比,在处理效果基本一致的情况下,得到了较高的加速比,缩短了遥感影像震害分析处理的时间,为提高地震应急震害遥感分析处理的速度提供了示范。最后还对方法的应用效果进行了讨论。更多还原

【Abstract】 This paper outlines the advances in the application of remote sensing technology and parallel computing to earthquake emergency.The application of parallel computing technology to the extraction of earthquake damage from remote sensing images is preliminarily investigated.The parallel computations with ratio method and correlation coefficient method are applied to detect the changes of the town of Beichuan after Wenchuan 8.0 earthquake by using pre-earthquake and post-earthquake remote sensing images acquired by FORMOSAT Ⅱ Satellite.A higher speed and reduced time of image procession have been obtained comparing with that proceeded by the professional image processing software.更多还原