城市水体信息光学遥感提取方法研究进展报告

准确、快速地提取城市水体信息，是对城市水体时空分布状况进行调查、水污染监测、水环境保护和水环境科学开发利用的基础.该文依据近年来城市水体信息遥感提取的国内外研究成果，综述了水体信息遥感提取方法的研究进展，综合评价了常用的城市水体信息提取方法的特点；揭示了基于遥感手段提取城市水体信息的最优阈值设定、方法普适性、城市水体遥感提取空间分辨率问题等关键难点和挑战，阐明和展望了未来研究方向及关键科学问题.

Research progress report on urban water information extraction methods by using remote sensing way

Accurate and rapidextraction of urban water information is the fundamental basis for investigation of spatio-temporal distribution of urban water， water pollution monitoring， water environmental protection， and utilization of water environment. This paper summarizes the research progress of urban water information extraction methodsand comprehensively evaluates the characteristics of commonly used methods based on the domestic and internationalresearch results of urban water information extraction in recent years. Beside， the key difficulties and challenges are revealed， such as optimal threshold setting， method universality， and spatial resolution of urban water remote sensing extraction. Moreover， future research directions and key scientific issues are clarified and foreseen.