3차원 레이저 스캐닝 자료를 이용한 도로 선형의 구성요소 추출

Abstract

A laser scanning technique has been attracting much attention as a new technology to acquire location information. This technique might be applicable to a wide range of areas, most notably in geomatics, due to its high accuracy of location and automation of high-density data acquisition. A highway geometric information system has been developed in this study by utilizing the advantages of the laser scanning technique. The system can accurately interpret the geometric information of highway and can be applied to actual works. To accurately interpret the geometric information of highway, three- dimensional data on highway were collected promptly and accurately, and then transmitted on a real-time basis using the socket network method. Continuously scanned data were then registered and geo-referenced and the developed technique was verified to have a higher accuracy than other techniques through an accuracy analysis. An algorithm that can automatically separate a horizontal alignment into a straight line, a transition curve, and a circular curve to develop the highway geometric information system. It can increase its efficiency compared to the conventional methods. In addition, an algorithm that can automatically extract design elements of horizontal and vertical alignments of highway was developed and applied to an object highway. This yielded higher practicality with more accurate values compared to those from previous studies on the extraction of design elements of highway alignment. Through the establishment of a systematic database for diverse data on highway and the development of web-based operating programs, an efficient highway maintenance can be ensured and also they can provide important information to be used when estimating a highway safety in the future.