期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2005
卷号：XXXVI-8/W27
出版社：Copernicus Publications
摘要：In this paper a discussion about the effects of very high resolution (VHR) in both the spatial and the spectral dimensions for urban land cover mapping is proposed. We confirm that VHR spatial sensors are unable to discriminate between some urban materials, since they often come from the same chemical family. However, VHR in the spectral sense sometimes carries too much information, since it differentiates covers made by the same material but with different age or illumination conditions. Finally, after out test with a supervised classifier, we stress the importance to use the context for a more accurate mapping, and offer one simple way to improve the classification using a priori knowledge about the geometric constraints of the segmented map
关键词：Urban remote sensing; hyperspectral imaging; very high resolution sensors
