栅格数据中面状地物的骨架线提取方法  

Skeleton Line Extraction Method for Polygon from Raster Data

作　　者：孔月萍[1] 万晨[1] 张跃鹏[2] 张晶晶 

机构地区：[1]西安建筑科技大学信息与控制工程学院,陕西西安710055 [2]西安测绘研究所,陕西西安710054

出　　处：《测绘科学技术学报》2017年第3期311-314,共4页Journal of Geomatics Science and Technology

基　　金：陕西省自然科学基金项目(2016JM6032)

摘　　要：为了快速有效地提取栅格数据中面状地物的骨架线,在详细分析地物骨架线特征的基础上,采用形态学去除栅格数据中的噪声,再通过距离变换确定中心位置,进而利用图像分割方法沿中心位置分割图像,提取分块之间的交线形成骨架线。实验表明该方法适应性强、处理速度快,且提取的地物骨架线平滑又连通,与地物的拓扑结构和几何形态基本一致,可以满足实际应用的需要。In order to extract skeleton lines of polygon effectively and quickly, a new method is proposed based on analyzing characters of skeleton lines systematically. Firstly the noise is removed using morphological method. Secondly the skeleton lines are located by using distance transform. Finally the image method is used to divide the image along the location and the skeleton lines are extracted from intersection between blocks and blocks. Experimental results show that this method has advantage of high-adaptability and faster extraction speed, and the skeleton lines extracted are smooth, continuous and consistent with topological structure and geometrical morphology of the polygon, which can meet the needs of practical application.

关 键 词：面状地物 骨架线 形态学 距离变换 图像分割 拓扑 

分 类 号：P209[天文地球—测绘科学与技术]