VIII CONCLUSION 
The domain of integrated photogrammetric systems is broad, complex and 
dynamic; hence it cannot be dealt with comprehensively by a working group 
in one inter-congress period. The initial effort is therefore focussed on 
a few sub-areas of main interest; other parts might be considered 
fragmentarily. 
The potential of integrated systems lies in their versatility and 
flexibility, such as the ability to merge information from different 
sources to a homogeneous data base, and to generate diverse information 
products. Further important properties are intense near-real-time ex- 
change of information and data between the data base and the different 
system components in all process stages (inclusive collection), and op- 
timal use of the resources. 
Systems for large- and very large scale (detailed) data bases are of spe- 
cial interest. This is because the utility of such information is by far 
the greatest, and the need for it tends to grow steadily. 
Sub-systems for differential mapping applicable to updating, upgrading 
and forming new thematic data bases are gaining in importance. They can 
be composed of the already existing components of integrated systems with 
minor addition. 
Large scale data bases can be made compatible with those at medium and 
small scales via conversions of structures, formats, codes and symbols. 
Such conversions are part of the generalisation process, to be included 
in broad integrated systems. 
Annex 1 
TERMS OF REFERENCE 
Concepts and system models 
Design and development (of new systems) 
Existing integrated systems 
Performance and reliability studies 
Evaluation 
Impacts of integrated systems 
OB WN 
Annex 2 
LIST OF W.G. II-6 MEMBERS 
M.M. Allam (Co-chairman; Canada), J. Badekas (Greece), G. Bauer (D.D.R.), 
Mme D. Bruger (Canada), E.B. Brunson (U.S.A.), A. Carreno Mendez 
(Mexico), J.B. Case (U.S.A.) A. Elassal (U.S.A.), C.W. Greeve (U.S.A.), 
L. Cogan (Switzerland), K.A. Grabmaier (Netherlands), S.  Heggli 
(Switzerland), D. Hobbie (West-Germany), O. Hofmann (West Germany), Z. 
Jaksic (Canada), W. Kainz (Austria), F.S. Kr8ll (West Germany), Liu Xian 
Lin (China), S.E. LBnnum (Norway), M.L. McKenzie (U.S.A.), M.M. Radwan 
(Netherlands), T. Schenk (U.S.A.), Mme U. Stampa-Wessel (West-Germany), 
W.M. Strome (Canada), A. Sujanani (U.S.A.), C. Vigneron (France). 
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