国土资源遥感Issue(1)：13-16,4.DOI:10.6046/gtzyyg.2012.01.03
一种面向高空间分辨率遥感影像的路口自动定位新方法
A New Approach to Automatic Positioning of Road Junctions in High Spatial Resolution Remotely Sensed Imagery
摘要
Abstract
On the basis of systematically inducing and analyzing the methods to extract road junctions from remotely sensed imagery, a new approach to automatically positioning road junctions in high spatial resolution images is presented in this paper. The related algorithm includes the following steps: firstly, the homogeneous areas are obtained by lower gradient operator; then, waters, shadows and small areal distracting features are removed one by one; after that, the straight lines are detected in the binary image by means of Hough transform; finally, the detected straight lines are sorted according to the frequency with which they appear, and the road junctions are indicated with the average coordinates of the intersections of several top frequent straight lines each of which at least has one intersection angle larger than the predetermined threshold. In the case study, an intersection and a junction of three roads were located in local urban area of Fuzhou by using QuickBird panchromatic image as sample data, showing that the proposed approach, with robustness against spectral confusion and confused features, can efficiently and accurately locate road junctions.关键词
路口/路口自动定位/高空间分辨率/QuickBird影像/Hough变换Key words
road junctions/ automatic positioning of road junctions/ high spatial resolution/ QuickBird image/ hough transformation分类
信息技术与安全科学引用本文复制引用
张伟伟,毛政元..一种面向高空间分辨率遥感影像的路口自动定位新方法[J].国土资源遥感,2012,(1):13-16,4.基金项目
国家自然科学基金项目(编号:40871206)和国家科技支撑计划项目(编号:2007BAH16B01)共同资助. （编号:40871206）
