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：2008
卷号：XXXVII-B8
页码：1225-1228
出版社：Copernicus Publications
摘要：The airborne laser scanner (LiDAR) adopted recently permits creation of a more high resolution digital elevation model (DEM). Since the airborne laser scanner can measure the elevation under vegetation, the topographic information is more detailed than the information obtained from maps drawn by aerial survey mapping. We have developed a new method of representation to permit topographic reading. The ELSAMAP (Elevation and Slope Angle Map) is a new topographic analysis method developed by our company to permit easy understanding of topography. The ELSAMAP is drawn by transmission synthesis of the "elevation information" represented by color phase and the "slope information" represented by gray scale images. It permits intuitive and correct understanding of the relative positions and the scale of the topography, offering an effective terrain representation tool that will support topographic readers. Topographic analysis using a high resolution DEM obtained by an airborne laser scanner permits creation of a more detailed topography classification map, as well numerical simulation. Quantitative estimation of topographical change by repeated measurement using an airborne laser scanner is also possible. Since examination of wide-ranging hazard only by ground survey is inefficient, the qualitative and quantitative survey by an airborne laser scanner will be efficient in terms of cost- benefit performance as well
