结合分割线网络的遥感影像镶嵌及ENVI/IDL实现  

Remote Sensing Images Mosaicking Based on Segmentation Line Network and Implementation of ENVI/IDL

作　　者：汪家亮 赵银娣[1] 韩天庆[2] WANG Jialiang;ZHAO Yindi;HAN Tianqing(School of Environment Science &Spatial Informatics,China University of Mining and Technology, Xuzhou,Jiangsu221116,China;Tianjin Institute of Surveying and Mapping, Tianjin300381,China)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]天津市测绘院,天津300381

出　　处：《遥感信息》2018年第6期92-96,共5页Remote Sensing Information

基　　金：江苏省测绘地理信息局科研项目(JSCHKY201412)

摘　　要：针对在遥感影像镶嵌中,常用的遥感图像处理软件通常需要对镶嵌线进行人工二次编辑以优化镶嵌效果,自动化程度较低的问题,设计一种在分割线网络中搜索镶嵌线的方法镶嵌影像,并在ENVI平台上进行二次开发将该方法以模块化的形式嵌入其中,实现了序列影像镶嵌。该方法首先对重叠区进行图像分割,提取分割线网络,然后基于相邻斑块间的分离度设计路径代价函数并构造分割线网络无向带权图,运用Dijkstra算法搜索图中最短路径作为镶嵌线并将其矢量化,最后根据该镶嵌线完成影像镶嵌。实验结果表明,该方法自动提取得到的镶嵌线能更少地穿越房屋、河流等显著地物,并能沿着地物边缘行进,淡化镶嵌痕迹。The seamline extracted in the software is still needed to be edited to optimize the mosaic result in image mosaicking,which is less-automated.Aiming at this issue,a method searching seamline in segmentation line network was adopted in this paper,which was embed in ENVI module through the re-development on ENVI platform and was applied to the sequence images mosaicking.The algorithm firstly segmented the overlay and extracted the network in segmentation image ,then constructed an undirected weighted graph with the patch dispersion which was designed as the path cost.The Dijkstra algorithm was used to search the shortest path in the graph as the seamline and vectorized it.At last,images would be mosaicked based on the seamline.Experimental results showed that the seamline extracted in this method could reduce the situation of crossing the ground objects and move on along their edges which will desalt the mosaic trace.

关 键 词：影像镶嵌 影像分割 最短路径 镶嵌线提取 ENVI/IDL 

分 类 号：P231.5[天文地球—摄影测量与遥感]