3차원 포인트 공간자료 가시선 분석 실험

다국어 초록 (Multilingual Abstract)

Using 3D point data implemented from terrestrial LiDAR, this research has modelled geospatial data in 2 categories(gridded & un-gridded) and conducted LOS analysis experiment using outcome from the modeling exercise. To compare LOS analysis results from each of the 2 models in the above, maximum LOS (line of sight) range in the experimental area was specified as 30m in Area A, 40m in Area B and 50m in Area C and the time taken by LOS analysis and the number of visible points were measured. As for the LOS analysis experiment results, in comparison with the gridded model, the un-gridded model took about 3.9 times more time in Area A, 5.4 times in Area B and 6.5 times in Area C. In addition, about 0.97 times fewer points were measured in Area A, 0.93 times in Area B and 0.94 times in Area C. The difference between gridded model and un-gridded model in terms of the time taken by LOS analysis increased, as the maximum LOS range extended. On the other hand, the number visible points did not vary significantly in reference to the size of visible range.

참고문헌 (Reference)

1 이용웅, "지형공간 정보를 이용한 감시장비 배치 최적화 실험 연구" 한국군사과학기술학회 9 (9): 72-79, 2006

2 어양담, "지형고도자료 해상도가 가시선분석에 미치는 영향" 한국군사과학기술학회 11 (11): 99-105, 2008

3 장문현, "도시경관 진단을 위한 실시간 Web 3D GIS 구축 툴 개발 연구개발결과보고서" 정보통신부 2004

4 김지은, "다중뷰 포인트 3차원 데이터의 통합 곡면 생성에 관한 연구: A Study on the Algorithm for Surface Generation From Multi View Scattered Data" 서울산업대학교 2003

5 홍태민, "격자화된 지상라이다 자료의 3차원 가시선 분석 실험" 한국측량학회 27 (27): 357-365, 2009

6 이준학, "가시권 분석에서의 MAUP 영향 분석" 한국군사과학기술학회 12 (12): 80-87, 2009

7 "http://en.wikipedia.org/wiki/Floor_ function"

8 Benincasa, M. M., "Parallel Implementation of the Terrain Masking Algorithm" Rome Lab., Griffiss AFB 1994

9 Andrew S. Glassner, "Graphics Gems" Academic Press 446-450, 1991

10 김진택, "GIS를 활용한 아파트 지역의 전파 장애 실태 평가" 389-397, 2004

11 김용석, "GIS를 이용한 문화·관광자원의 가시권 분석" 429-433, 2004

12 Po-Han Lin, "Extremely Fast Line Algorithm"