CADASTRAL MAPS - HOW TO MAKE DIGITAL FROM GRAPHICAL
Wonjun CHOI, Prof. Minsuk LEE and Prof. Woosub SIM, Korea
Key words: cadastre, mapping, surveying, map scale,
land registration.
Abstract
Korean cadastral system keeps graphical maps made by the plane
table method from 1910's. The fact is that the graphical maps grafted
on paper cover about 95% of the whole land (MOGAHA, 1999). The needs
are arising to transform the graphical cadastre to a digital one in
compliance with modern technologies. Korean government has already
begun to digitise the old maps from 1999. A nation-wide land
information system will be established after the digitising project is
completed. However, the accuracy of the digitised coordinates cannot
meet the needs of cadastral surveyors and landowners at all because it
cannot exceed that of the paper maps. The definite solution will be
surveying all the parcels again and making new digital maps.
A project will commence in 2004 to satisfy those needs by the
Ministry of Government Administration and Home Affairs. Re-surveying
34 million parcels cannot be done at once. The strategy should be
dividing the country into county-wise or grid-wise pieces and
surveying one by one. Municipal governments of counties, cities or
urban districts will be the major sponsors of the project but the
costs will hardly be affordable at a time. For the purpose of
resolving the financial problem, each municipality can split its own
project into smaller ones by year base. There is accordingly a great
possibility to create inconsistency over the divided project areas
caused by different techniques applied, different equipments used
and/or mismatches of borders. Meanwhile, it also provides some merits.
The people in completed areas will be satisfied with the enhanced
accuracy and feel safe in land transaction, which stimulates land
markets and, in turn, improves overall nation-wide economic situation.
Thus, the main issue of the thesis shows how to make the cadastral
re-survey project scalable. Guidelines to perform the job will be
derived from some experienced cases.
CONTACT
Wonjun Choi
Researcher
Training & Research Institute
Korea Cadastral Survey Corp.
624, Unhak, Yongin
Kyunggi
KOREA
Tel. + 82 31 339 4474
Fax + 82 31 336 1583
E-mail: wchoi@kcsc.co.kr
Assoc. Prof. Minsuk Lee
Training & Research Institute
Korea Cadastral Survey Corp.
624, Unhak, Yongin
Kyunggi
KOREA
Tel. + 82 31 339 4474
Fax + 82 31 336 1583
E-mail: mslee@kcsc.co.kr
Assoc. Prof. Woosub Sim
Training & Research Institute
Korea Cadastral Survey Corp.
624, Unhak, Yongin
Kyunggi
KOREA
Tel. + 82 31 339 4474
Fax + 82 31 336 1583
E-mail: wssim@kcsc.co.kr
23 March 2001
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