地籍圖面 活用의 改善에 關한 硏究 : 鍾路區 地籍圖面 數値화일 構築을 中心으로

지적도면의 활용 개선과 수치파일 구축 방안을 연구했다.

The cadastral map currently used in our country was that drawn up by the low level land (forests and fields) survey technique enforced in 1910 and 1924, and has many structural problems such as the wears and twists as it was used for a long time, so the public officials using the cadastral map is appealing much difficulty, which causes urgent reform of it.

This paper shows that as a result of examining and analyzing the perception of the public official in charge of practice in Seoul Metropolis directly utilizing the cadastral map in the process of actual work performance, 87.3% of the respondents have gone through whatever type of difficulty by presenting the need of the current cadastral map in any way. Also it was examined that the public officials in charge enumerate the problems in utilizing the cadastral map in the order of the diversity of a reduced scale, inconsistency of the borders, management of provincial outskirts, then think of the computerization of the cadastral map as the first thing to considered.

Also 94.2% of the respondents answered that GIS introduction is needed for the structural problems to be reformed and for the department in charge to enhance the effectiveness of the utilization of the cadastral map, furthermore, they want the central government such as the Ministry surveying the entire land and initiatively promote related projects for constructing composite GIS. However, this type of national project takes too much time and require enormous resources.

so constructing and using the numerical file of the cadastral map is the best method to be chosen in reality, thus, as a result of constructing the numerical file to the cadastral map currently used in Jongro-Gu, Seoul and analyzed the practicability of the constructed data, this paper analyzed it can be used if the problems the cadastral map in use now are reformed, and present the research finding as follows.

First, for coordinates reading, it is desirable to find out the values at the initial registration as an essential work in constructing the numerical file of the cadastral map drawing, but it is so difficult that we have to read the coordinates, then carry out the spot survey and supplement it manually using the Digitizer, and if one lot is formed after reading coordinates, construct the entire lots of the relevant drawing in a type of polygon by having making one polygon. Second, we have to connect the numerical file of the cadastral map in the order of the connect per lot → that per reduced scale → that per provincial outskirt → that per administrative district borders.

Third, the error types of the constructed numerical files on the cadastral map can be classified to its own error of the cadastral map, that of coordinates reading, that subject to expansion and contraction supplement and drawing combination, that of attribute data, of them the errors of expansion and contraction supplement and drawing combination account for the highest rate, and the results of mutually comparing and analyzing the constructed area of the numerical file of the cadastral map and the registered area of the cadastral register book within the tolerable error account for 89.8%, which showed better finding then expected.

And Considering that the land to be the target of new registration as it was not registered in the process of the construction of the numerical file of the cadastral map was found, if it is expanded nationwide, there will be considerable land to be newly registered. Fourth, it was analyzed that as a result of positively using the constructed numerical files of the cadastral map, no problems are found, so it be used overcoming the problems of the cadastral map used by the public officials in charge without any supplementary measures.

Fifth, if this constructed numerical file of the cadastral map is made to more accurate and precise numerical file data of the cadastral map through the adjustment work other than tolerable error prescribed at the permissible the error subject to drawing combination, it can be used as the basic map of the lay-out plan by many departments in charge and if other attribute data, city planning data, architecture data and tax data are additionally constructed to it, it is judged to be applied as more extensive lay-out data.