Refinement of Building Boundary using Airborne LiDAR and Airphoto

ABSTRACT Many studies have been carried out for automatic extraction of building by LiDAR data or airphoto. Combining the benefits of 3D location information data and shape information data of image can improve the accuracy. So, in this research building recognition algorithm based on contour was used to improve accuracy of building recognition by LiDAR data and elaborate building boundary recognition by airphoto. Building recognition algorithm based on contour can generate building boundary and roof structure information. Also it shows better accuracy of building detection than the existing recognition methods based on TIN or NDSM. Out of creating buffers in regular size on the building boundary which is presumed by contour, this 2008년 8월 11일 접수 Received on August 11, 2008 / 2008년 9월 10일 수정 Revised on September 10, 2008 / 2008년 9월 16일 심사완료 Accepted on September 16, 2008 * 본 연구는 국토해양부 첨단도시기술개발사업 - 지능형국토정보기술혁신 사업과제의 연구비지원(07국토정보C04)에 의해 수행되었습니다. 1 한국토지공사 국토도시연구원, Korea Land Corporation, Land & Urban Institute 2 전남대학교 공학대학 건설환경학부, Chonnam National University, Department of Civil & Environmental Engineering ※ 연락저자 E-mail : hozilla@chonnam.ac.kr