一种有向线间拓扑关系与方向关系的集成表达模型

基金项目: ?湖北省自然科学基金资助项目(2011CDC023)

详细信息

Automatic Recognition of Bridge Above Water in Aerial Images Based on Regional Feature

¹College of Electronic Engineering,Naval University of Engineering,717 Jiefang Road,Wuhan 430033,China;²Department of Weaponry Engineering,Naval University of Engineering,717 Jiefang Road,Wuhan 430033,China

Funds: ?湖北省自然科学基金资助项目(2011CDC023)

摘要: 针对二维欧氏空间内有向线的特点,将有向线对象区分为起点、内部和边界,建立了有向线对象之间拓扑关系与方向关系集成表达的DLR模型,并给出了一个具体应用实例。与现有模型进行对比分析发现,DLR模型不仅能描述二维空间中有向线对象之间的方向关系,还能够有效地区分相离、内部相交、相切、部分覆盖等拓扑关系,从而提高了有向线对象之间空间关系的区分能力。
- 有向线 /
- 拓扑关系 /
- 方向关系
Abstract: Addressing the automatic recognition problem of a bridge above water in aerial images,an automatic recognition algorithm for a bridge above water in aerial image based on regional features is proposed.Firstly,aerial image binarization is executed based on the gradient mean square variance.The image noises are then removed based on pixel density.Next,the connective regions are labeled according to the pixels in binary image with a six neighborhood connection rule to obtain the water regional feature.Finally,the bridge is extracted.Experiments show this algorithm is effective for automatic recognition of a bridge above water in low-contrast aerial images taken at low altitudes.
- aerial image

[1]	梅天灿李德仁,秦前清,. 基于直线和区域特征的遥感影像线状目标检测[J]. 武汉大学学报(信息科学版). 2005(08)[2] 聂?赵荣椿,张艳宁,. 一种从航空图片中自动检测桥梁的方法[J]. 西北工业大学学报. 2003(05)[3] 张修军郭霞,金心宇,. 带标记矫正的二值图象连通域像素标记算法[J]. 中国图象图形学报. 2003(02)