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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