期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2006
卷号：16
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：Using internet technology for photogrammetric tasks is connected with the combined transfer of descriptive information and raster images. The construction of this kind of software is complicated and has many limitations,especially when applications make use of internet browsers on the client side. In this paper,the author concentrates on the possibilities offered by the Internet. Proposed solutions of photogrammetric tasks are based on an application server and computers equipped with standard internet browsers,e.g. Internet Explorer,Netscape,Opera. The structures and specifications of several selected internet applications created by the author are described. All of them were written in Java. Activity diagrams in the UML language were used to describe the structures of algorithms. The first presented application determines the transformation coefficients from the pixel coordinate system to the fiducial coordinate system. Measurement of the pixel coordinates of fiducial marks is automated. After indication of the initial fiducial mark and the area of the approximate location of the next fiducial mark,the remaining marks are appointed using image correlation methods. The elements of relative orientation and three-dimensional image of the terrain in an anaglyph form can be generated by means of the second described application. The next program surveys points in a stereopair and calculates their terrain coordinates. The area of the polygon given by measured point is also determined. The print screens,which were executed during the program run via Internet,were used for presentation of the examples. The introduced solutions have great didactic value. They are distributed applications from the point of view of program structure. Thus,the functions written as procedures and data are located on several network computers. To create them,client-server technology with thin client or a three-layer system architecture was used. Essential data such as elements of photos orientation and parameters of images are sent in binary or in the form of a text package. Photos,which are cut out from original image pyramid stored on server in the BMP files,are delivered to user as JPEG files. Anaglyphs are transferred as web pages in HTML code. The idea of generating Digital Terrain Model and orthoimages via Internet is also presented in the article. The described applications work on the Department of Photogrammetry and Remote Sensing server. They are also accessible by the agency of the internet page of International Society of Photogrammetry & Remote Sensing,WGIV/5: Web-based Geoinformation Services & Applications.
其他摘要：Zastosowanie Internetu w fotogrametrii wiąŜe się z przekazywaniem informacji opisowych oraz obrazów rastrowych. Budowa takich aplikacji jest złoŜona i ma swoje ograniczenia zwłaszcza,gdy aplikacja ta wykorzystuje po stronie klienta przeglądarkę internetow
关键词：internet browser;photogrammetric internet application;client-server technology
