多时相遥感影像变化检测系统设计与实现

Design and Realization of Multitemporal Remote Sensing Image Change Detection System

针对遥感卫星影像数据量大,计算时间长等特点,在高性能集群并行处理环境下,研究了长时间序列遥感卫星影像变化信息快速提取技术,设计并实现了一体化变化检测工艺流程及系统框架,为多时相遥感卫星影像变化检测提供了高精度、快速的方法与平台。以广东某地区为试验数据,研究表明,与传统变化检测方法相比,进一步提高了变化信息提取精度,并可以获得良好的并行加速比,并行效率高,能够满足大规模遥感数据的变化检测。

With the high performance cluster environment,this paper discusses multitemporal remote sensing image change detection,and presents design,function and implementation of change detection system.Coping with the large amount of data and high processing complexity of remote sensing images,a new parallel algorithm of change detection based on change vector analysis and PCA has been discussed.This approach can improve both the precision of change detection and increase the computing efficiency.