23IR1400, Development of detection and extraction technology for changed underground objects.,
Kim Kwang Soo
Abstract
도심지 지하공간 안전사고의 예방을 위해 지하공간통합지도가 구축되고 있다. 지하공간통합지도의 갱신 시간을 단축시키기 위해 신규로 입력된 지도 중 갱신된 객체만을 선별하는 변화객체 탐지추출 기술이 적용되었다. 갱신 객체는 신규 객체, 삭제 객체, 속성 변경 객체로 분류한다. 그러나, 굴착 공사의 대상이 되는 매설물만 포함한 부분지도가 입력된 경우 삭제 객체를 찾지 못하는 문제가 발생한다. 본 논문에서는 부분지도에서삭제 객체를 찾을 수 있는 세 가지 방법들에 대해 논의하였다. 삭제 객체를 찾기 위해서는 원본 객체의 일부분만 변경된 갱신 객체의 존재 여부를 판정하여야 한다. 일부가 변경된 객체를 추출하기 위해 DE-9IM, Relate 함수, Intersection 함수를 사용하였으며, 이 방법들의 성능을 선형 객체에 적용하여 비교하였다. 세 가지 방법 모두 중첩된 형상을 포함한 객체들을 동일 객체로 오류 없이 판정하였으며, Relate 함수가 가장 빠른성능을 보여주었다.
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