论文部分内容阅读
对航空城区图像自动提取矩形建筑物方法进行了研究。该方法基于从航空城区图像中提取的边缘 ,通过轮廓跟踪、直线提取得出其相应的直线几何图形。本文引入知识定义了几种构成矩形的基本矩形结构元。先提取直线图形中所有可能构成矩形的基本结构元 ,进而采用几何结构元分析的方法 ,根据结构元合并的准则 ,将各种基本结构元通过一定的合并算法合并成矩形结构。试验结果表明 ,本文方法提取矩形房屋具有较高的准确率 ,鲁棒性好 ,运算速度快 ,具有较强的实际应用价值
The method of automatically extracting rectangular buildings from aerial city images was studied. Based on the edge extracted from the image of aviation metropolitan area, the method obtains the corresponding straight line geometric figure through contour tracking and straight line extraction. In this paper, we introduce knowledge to define several basic rectangular structure elements that form a rectangle. Firstly, we extract all the basic structural elements which may constitute a rectangle in the linear graph, and then adopt the method of geometric structure element analysis. According to the principle of structural element merging, the basic structural elements are merged into a rectangular structure by a certain merging algorithm. The experimental results show that this method can extract rectangular houses with high accuracy, good robustness, fast computing speed and strong practical value