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 以不同时期ALOS卫星遥感影像为例,通过影像预处理,结合基于多光谱的向量变化分析法、差值主成分分析法、全色影像差值法等多种变化检测方法,对基于变化影像实现居民地、道路和水系自动与半自动发现和提取进行了深入研究,并对各检测方法进行优缺点分析。 更多还原

【Abstract】 The paper studies the methodology of the fundamental geospatial information change extraction.Two ALOS optical images acquired at different time are preprocessed.The changes associated with residence area,road and water network are then extracted from those two remote sensing images using three different change detection methods,e.g.the change vector analysis,principal component analysis and panchromatic image difference.Finally,the advantages and disadvantages of the three methods are compared.... 更多还原