직선 기반 스테레오 정합을 이용한 평면 지붕 인공지물의 고도 정보 추출 = Height Estimation of the Flat-Rooftop Structures using Line-Based Stereo Matching

다국어 초록 (Multilingual Abstract)

In this paper, the algorithm to extract the height of flat-rooftop structures in stereo aerial image is suggested with an assumption that the location, orientation, focal length, and field of view of a camera are known. It can be adapted to stereo aerial or satellite images. For performing feature-based stereo matching, the line segments suitable to describe the shape of general buildings are chosen as the feature. This paper is composed of three categories; the first step is to extract edges of structures with the polygon extraction algorithm which utilizes the edge following method, the second step is to perform the line segment matching with the camera information, and the last step is to calculate the location of each matched line and to estimate heights. The stereo images used in experiments are not real but synthetic ones. The experiment shows good results.