26 
Operating 
system 
Browser 
Windows 95/98/NT 
Solaris (Unix) 
Linux (Intel) 
Netscape Communicator 4.5 
yes 
yes 
yes 
MS Internet Explorer 4.0 
yes 
yes 
yes 
SUN HotJava 1.0 
yes 
yes 
not available 
Tabel 1: Use of LDIPInter on different operating systems and browsers 
5. FUTURE DEVELOPMENTS 
Computer, software, and the Internet change rapidly. The 
Internet will serve as a window to the world and as a source of 
information. It will be very much used in the education. In 
future, part of the education will be international and remote. 
In our competitive world there will hardly occur a 
standardisation or domination of one computer type or one 
operating system. The concept of the JVM is a possible answer 
to the variety of computer systems. The combination of the 
JVM and the Internet seems therefore to be logical and their 
potential for education is tremendous. Browsers will play a key- 
role for the communication and distribution of text information. 
They can also serve as starting place and as display window for 
interactive learning programs with multimedia features. In order 
to create such Internet-based learning programs efficient tools 
have to be available. 
It is very likely that this will be possible in future due to the 
heavy competion between the producers of browsers. All these 
tools will change constantly and this will make the development 
of good learning programs difficult. The industry for learning 
material will create solutions for the major subjects. The smaller 
subjects like photogrammetry and surveying engineering will 
need a cooporation of the teachers at different places to specify, 
produce and document such educational material. A common 
platform for the development of such learning software is now 
also possible with the Internet-based and free development tool: 
Java Development Kit. It is the hope of the author that an 
international cooperation between motivated teachers and 
programmers will create extensions of LDIPInter as well as 
other learning software packages. 
6. REFERENCES 
Höhle, J. , 1996: Learning Digital Photogrammetry by Means 
of Personal Computers. International Archives of 
Photogrammetry and Remote Sensing, 31, Part B6, 
Commission VI, pp. 61-64. 
Höhle, J. , 1997: Computer-assisted Teaching and Learning in 
Photogrammetry. ISPRS Journal of Photogrammetry & Remote 
Sensing 52 (1997), pp. 266-276. 
Höhle, J. , 1998: Computer-Assisted Learning and Teaching on 
PC’s and the Internet, Proceedings of the XXI International 
Congress of Surveyors, Commission 2, Brighton ,UK (FIG 
'98), ISBN 0-85406-898-8, pp. 124-135.