土地覆盖变化遥感检测方法

Methods of Land-cover Change Detection Based on Remote Sensing Technology

土地覆盖变化对与促进全球变化研究具有十分重要的意义。遥感技术是土地覆盖变化研究最有力的技术手段。各国学者发展了众多的变化检测方法,研究表明每种方法都具有优势与不足。实际研究中通常同时比较几种检测方法,选择其中最优的进行特定目的的研究。在总结前人研究的基础上,对变化检测研究中的遥感数据预处理、主要变化检测方法、变化检测阈值确定、变化类型分析以及检测精度检验等内容进行了系统的阐述,以期对土地覆盖变化研究能够起到积极作用。

Land-cover change detection is extremely important for researching global change. Remote sensing is primary technology used for change detection. In recent decades, many change detection methods have been developed. Previous researches have shown that each method has its own merits. In practlce,different algorithms are often compared to find the best change detection results for a specific application and it involves many factors. The purpose of the review paper,which comprehensive exploration of all the major contents in the land-cover change detection based on remote sensing technology such as data pre-proeessing, major change detection methods, threshold problem, change type determining and accuracy assessment ,is to promote the research of land-cover change detection.