中低分辨率卫星影像Bowtie效应的快速去除  

Algorithm of Bowtie effect rapid removing for low and medium resolution satellite images

作　　者：贾益[1] 王盛[1] 江万寿[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,武汉430000

出　　处：《国土资源遥感》2016年第4期83-87,共5页Remote Sensing for Land & Resources

基　　金："863"计划项目"星机地综合定量遥感系统与应用示范(二期)"第一课题"星机地综合观测定量遥感融合处理与共性产品生产系统"(编号:2013AA12A301)资助

摘　　要：Bowtie效应是FY-3和MODIS等中低分辨率卫星影像数据中出现的数据重叠现象,该效应制约了卫星影像数据的进一步应用,因此必须在影像使用之前去除这种几何畸变现象。针对现有Bowtie效应去除方法存在计算复杂和效率低的不足,提出了一种基于路径追踪的Bowtie效应快速去除的几何纠正算法。通过路径追踪可以快速定位纠正影像像元在原始影像中位置,并考虑了跨越对向子午线以及地形起伏较大区域的处理。实验表明,这种方法能有效并且快速地去除Bowtie效应。Bowtie effect is a data overlapping phenomenon which arises in low and middle resolution satellite images such as FY -3 and MODIS. This effect restricts the further application of the satellite image data, so it must be removed before using these data. In view of the defects of existing methods for Bowtie effect removing such as complex calculation and low efficiency, this paper proposes a geometric correction algorithm based on path tracking to remove bowtie effect. It can quickly locate the pixel position of corrected image in the original image by path tracking while considering the disposal of the area which crosses the meridian or fluetuant. The experimental results show that this method can remove the Bowtie effect effectively and quickly.

关 键 词：中低分辨率卫星影像 Bowtie效应 几何纠正 路径追踪 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]