creating geoinformation systems (Fig. 2). The creators of 
data are State Geodetic Administration, administration 
and self-government, utility infrastructure and others, and 
the bid of geoinformation is realised within the scope of 
geodetic and spatial system (GEOPS) of the Republic of 
Croatia consisting of more mutually connected 
subsystems. One of more important is the topographic 
and cartographic subsystem having administrative and 
economic structures. In this subsystem, cartographic and 
information products of various types topographic data 
density are produced by experts using various 
technologies of topographic survey, cartographic 
production and dealing with geoinformation data. The 
users of data from geoinformation systems can be 
administration and self-government, spatial planning, 
public agencies and other users (Gojceta, 1999). 
Fig. 2. Relation in the creation of geoinformation 
systems (according to Gojceta, 1999) 
Databases about spatial units are used today for the 
purpose of passing laws, solving territorial disputes 
among units of local administration and for statistic 
research, and there are more and more bodies of state 
administration, public agencies, funds, and other legal and 
physical bodies that have asked or ask now for the data 
from the above mentioned bases (Pahic et al., 1997). 
4. CONCLUSION 
If we say that photography is actually registering an 
immensely large number of data about the photographed 
object, then the survey enables gathering a great quantity 
of data about the photographed object. It is not the matter 
of geometric parameters only, but also of other 
parameters that can be gathered manually, semi- 
automatically or automatically using new technologies, 
and the need is growing exactly in this direction. It is not 
enough any more to gather point or line information, but 
there is a greater need for surface information. In this 
area, photographic material in various forms is 
indisputably the information of the highest quality. 
A large number of experts even outside of the photo- 
grammetry frame should be interested in the application of 
digital aerial photographs, e.g. foresters, pedologists, 
archeolists, agronomists, geographers, geologists, ecolo 
gists, spatial planner, landscape architects, GIS firms, for 
military demands, but also the others that can use them 
as an intelligent means and a teaching tool, as a research 
tool, in the production of new thematic map, as an 
orientation tool or the means of work in many institutions, 
especially economic, utility and tourist institutions. 
In digital systems, the used methodology and technology 
of survey are almost identical either in the case of satellite 
scenes or terrestrial images. Remote sensing and 
classical photogrammetry are closer and closer, and the 
integration of GIS and GPS technologies will enable quick 
and continuous progress. 
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