遥感影像变化检测综述

Review of remote sensing image change detection

变化检测作为土地利用/土地覆盖检测的关键技术,其目的是在同一区域不同时期的遥感数据中检测出变化的部分及其类型。针对传统的变化检测方法中存在繁重的人工劳动和检测结果效果差等问题,大量基于遥感影像的变化检测方法被提出。为了深入了解基于遥感影像的变化检测技术以及进一步研究变化检测方法,通过对大量有关变化检测的研究进行整理、分析和比较,对变化检测进行了较为全面的综述。首先阐述了变化检测的发展历程;然后从数据选择及预处理、变化检测技术、后处理及精度评价这三个方面详细归纳了变化检测的研究进展,其中变化检测技术主要从分析单元和比较方法的方面分别进行概括;最后对变化检测各个阶段存在的问题进行了总结并提出了未来的发展方向。

As a key technology of land use/land cover detection,change detection aims to detect the changed part and its type in the remote sensing data of the same region in different periods.In view of the problems in traditional change detection methods,such as heavy manual labor and poor detection results,a large number of change detection methods based on remote sensing images have been proposed.In order to further understand the change detection technology based on remote sensing images and further study on the change detection methods,a comprehensive review of change detection was carried out by sorting,analyzing and comparing a large number of researches on change detection.Firstly,the development process of change detection was described.Then,the research progress of change detection was summarized in detail from three aspects:data selection and preprocessing,change detection technology,post-processing and precision evaluation,where the change detection technology was mainly summarized from analysis unit and comparison method respectively.Finally,the summary of the problems in each stage of change detection was performed and the future development directions were proposed.