【摘要】 针对坡屋顶轮廓自动提取困难，本文提出了一种结合随机抽样一致(RANSAC)算法和α-shapes算法提取坡屋顶轮廓的方法。该方法首先使用Ransac算法将坡屋顶的几个坡面提取出来，后使用改进的α-shapes算法分别提取这几个坡面的轮廓，进而形成完整的屋顶轮廓。更多还原

【Abstract】 Aiming at the difficulty of automatic extraction of sloping roof contour, this paper proposes a new method combining random sampling consensus(RANSAC) algorithm and improved α-shapes algorithm to extract the contour of sloping roof. Firstly, the RANSAC algorithm is used to extract several slopes of the pitched roofs, and then the improved α-shapes algorithm is used to extract the contours of these slopes, and finally fuses them to form a complete roof contour.更多还原