MODIS影像的几何处理算法研究  

A Study of Algorithm of Geometric Processing for MODIS Image

作　　者：梁志华[1] 

机构地区：[1]博罗县国土资源局,博罗516100

出　　处：《国土资源遥感》2012年第1期8-12,共5页Remote Sensing for Land & Resources

摘　　要：MODIS影像的几何处理是一项基础性的研究工作,是数据投入使用之前的一个十分重要的环节。该文对MODIS影像边缘区域数据重叠问题的几何精纠正方法进行了研究。由于MODIS的大扫描角和地球曲率的影响导致了数据重叠错位现象,通过比较已有的重叠效应去除算法的优缺点,研究了在几何纠正过程中消除影像边缘重叠的直接法和直接-间接法两种重采样方法。实验表明,这两种方法使重叠现象都得到了有效的去除,并且几何精纠正精度基本符合要求,重建了真实的影像几何特征。The geometric process of MODIS image is a kind of basic research work and is a key step before the utilization of data.In view of the fact that the large scanning angle of MODIS and the earth＇s curvature lead to the overlapping and dislocation,this paper deals in detail with high precision location and geometric correction for MODIS data.Based on a comparative study of the advantages and disadvantages in some overlapping removing algorithms,the author presents the direct method and direct-indirect method which can remove overlap in geometric correction.It is proved that the two kinds of resampling methods are feasible,and the precision of geometric correction can basically meet the requirement.Thus,the real image geometric character is rebuilt.

关 键 词：MODIS数据 数据重叠 几何精纠正 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置] P237[自动化与计算机技术—控制科学与工程]