基于图割算法的正射影像镶嵌线自动选择  

Automatically Seam-line Selection for Mosaicking Ortho-photo Via Graph Cut Algorithm

作　　者：丁锴为 邹峥嵘[1] 张云生[1,2] 张明磊[1] 

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410083 [2]水能资源利用关键技术湖南省重点实验室,湖南长沙410083

出　　处：《测绘与空间地理信息》2016年第9期54-56,共3页Geomatics & Spatial Information Technology

基　　金：自然科学基金项目(41201472);水能资源利用关键技术湖南省重点实验室开放基金(PKLHD201310)资助

摘　　要：由于投影差的存在,正射影像镶嵌时往往采用基于镶嵌线的镶嵌方法,当两幅正射影像镶嵌时,选取镶嵌线要尽量避开房屋。本文将两幅正射影像镶嵌建立为一个图模型优化问题,并且采用图割获取最小割将影像重叠区域划分为两部分,最小割经过的分界线即为影像镶嵌线。实验表明,本文方法效率较高,不需要指定镶嵌线的起始点,而且可以较好地避开房屋。Because of the existence of projection difference,the seam-line based mosaic method is often used to mosaick ortho-photo.The optimized seam-line has to be avoided pass through building when mosaicking two neighboring images.Thus,this paper proposed to set the mosaicking process as a problem of graph model optimization and use graph cut algorithm to divide the image overlapping area into two separated parts.The road of the minimum cut is the optimized seam-line.Experimental result reveals that this method is efficient,does not need to specify the start and end point of the seam-line,and can better avoid the building area.

关 键 词：正射影像 影像镶嵌 镶嵌线 图割 

分 类 号：P237[天文地球—摄影测量与遥感]