基于Hough变换的建筑物半自动提取

提出了一种基于Hough变换的建筑物半自动提取方法。该方法针对由人工给定建筑物的初始角点并通过统计屋顶主方向对Hough变换的搜索范围和搜索角度进行限制,从而稳定快速地提取出屋顶的边缘。然后利用最小二乘的方法对提取出的屋顶边缘进行精确对中,实现了对平顶直角建筑物以及人字形建筑物的有效提取。

Semi-automatic Building Extraction Based on Hough Transform

This paper presents a semi-automatic building extraction based on Hough transform.In this method,we initialize the position of the building's corners and calculate the direction of the roof which can give a limit for the searching of Hough transform.After extracting the edges of the roof,we make use of the least square method to get the more accurate position of the edges.Through the above steps,the roof of the building can be extracted accurately and steadily.