期刊名称：Bulletin of the Geographical Survey Institute
印刷版ISSN：0373-7160
出版年度：2014
卷号：62
出版社：Geographical Survey Institute / Ministry of Land, Infrastructure and Transport
摘要：The GSI uses contour maps to express topography on planar maps, but users need a certain ability to read and understand the topography. Therefore, the GSI developed the GSI Maps 3D that enables users to view any area in Japan in 3D on an Internet browser and to create the data for 3D printers, so that anyone can intuitively understand topography. The GSI Maps 3D site acquires elevation tiles delivered from the GSI Maps web server for the surrounding area which the user selects, and create a 3D model using a technology called WebGL. Then, the site displays 3D map by attaching corresponding topographical map or aerial photo images to the ground surface. This 3D processing utilizes the latest Internet technologies such as WebGL and HTML5 Canvas, and various technical issues associated with these technologies have been addressed. Regarding functions that are output as data for 3D printers, the GSI received advice from outside experts on such things as file formats. Future plans call for such public infrastructure as dams and bridges to be displayed in GSI Maps 3D and to improve functions for managing it.
