International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004
BATKTARHE OPTOSOTO APAHBENOBALL-45 t TE? - 45
Figure 5: Printed form of digital orthophoto
3.1 Problems in utilization
The main drawback in DOP utilization is insufficient computer
capacities of authorities at local level. Those areas which didn’t
accept computer philosophy are natural drawback to the all
innovations connected with computer technology. Computer
philosophy adopting process is full of sideways. Some cases
show that DOP is not in use in digital, but just in analogue,
printed form (Figure 5), because that delays facing with the
problem.
4. DATA DISTRIBUTION
First DOP opened the question of finding the optimal way for
its distribution. Namely, it became clear that town planning
agencies are disinterested or non-sufficiently qualified to make
DOP available to the other potential customers. There are cases
that, due to the fear of unauthorized copyrights, DOP remains in
the drawers and remains unavailable to other prospective users.
After initial problems, the solution is easily coming out.
Companies which possess DOP, started to realize their interest
to help the local governments. It is to expect very soon the
possibility to distribute data through the Internet. This way of
distribution is dedicated to the small potential users and
citizens. Their goal is multiple: rising general information
culture of citizens and organization; contemporary space
navigation, promotion of DOP as basic GIS background.
Planned services and favors are: overview, space searching,
ordering of paper copies, ordering of posters of attractive
locations, ordering digital copies of wanted location, ordering
of DTM products, etc.
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4.1 Copyright
Copyright of existing DOP are still fuzzy. Namely, DOP is the
first cartographie background which is produced in Serbia
without any help or support from the state. It is about one quite
spontaneous process in local areas as answer to the long termed
passivity of in charged state authorities. The only legal act for
the DOP production in Serbia at this moment rely in the Law on
planning and construction, which treats the DOP as the
background for the Master plan production, as well as the
regulation for the geodetic works in this area. Sometimes, local
governments are financing DOP production, so they consider
themselves as the owners of the copyright under DOP.
Additional problem arises in the situation when there are more
financiers. Practice shows that they are satisfied with the right
to make free copies for their needs, while the unlimited
copyright remains with the first and biggest investor — local
government. Holding the copyrights in very rigid way leads to
nothing, when we are talking about industry subjects and
citizens. Establishment of the DOP distribution at non-profit
principle is in progress. This means that the prices of services
for the users are such that they cover just the expenses of
ordered material. In this way, DOP becomes public good and
local government provides their citizens with public service.
S. INSTITUTIONAL ASPECT
All previous observations on DOP production and utilization in
Serbia show complete absence of national geodetic and
cartographic institutions, in the sense of production, as well as
in planned approach and regulations. In spite of that,
willingness of local governments, together with market
initiative, showed enviably vitality. What remains is the sad fact
that the state didn't recognize the need to make DOP available
to all potential users under the same conditions as the part of
national infrastructure of spatial data, as it is the case for some
other countries (TeSelle, 1995; Johansson, 1995). Nevertheless,
even worst is the fact that national geodetic organization, like
Governmental Geodetic Authority and Military Institute, didn't
planned so far digital orthophoto projects within their basic
activities.
5.1 Digital orthophoto and real estate cadastre
In spite of huge efforts to establish real cstate cadastre in Serbia,
digital orthophoto still didn’t find its place in cadastral
application. Still it is fuzzy how and under what condition DOP
can be utilized in the real estate cadastre. The answer to the
question “Is it possible and under what condition to use DOP in
order to up-to-date cadastral maps in the scale 1:1000 and
1:2500?" should be given. This is necessary, because in this
moment extent of this work cannot be clarified. It means that
classical way of field works may just slow down the process of
legislation.
The idea is very simple: allow utilization of DOP for digitizing
and geopositioning of unrecorded objects in order to link them
with appropriate identity (ID) in legislation part of real estate
database. Temporary geopositioning can be improved with
precise land surveying, when and if there's a need for that.
If legislative and normative capabilities would allow direct
application of DOP in production and maintenance of real estate
cadastre in Serbia, that would be immediate motive to raise
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