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：1998
卷号：XXXII Part 4
出版社：Copernicus Publications
摘要：The interest to use Internet for accessing and distributing geospatial data has emerged rapidly since the invention ofWWW-technology. Related to photogrammetry, there are several experiments and sites using digital orthophotos. Thefunctions supplied for a user of a web browser include commonly zooming and panning of the imagery, and overlay ofvector-formatted geospatial data. The technical realization to support these functions usually relays on the three-tirearchitecture in which a web server transmits image request to an image server via Common Gateway Interface (CGI). Inthis paper we further elaborate this topic. The paper addresses especially the issue of using a standard web browser as atool for making 3-D measurements on digitized aerial photographs. It also demonstrates how to implement theinteraction in a web browser, how to cope with the large image sizes, how to store the measurements locally and/or howto transmit them to the server. The implementation of a prototype system is based on Java. The paper also points out theapplication areas where this concept of WepTop photogrammetry is considered to be most suitable
