摘要
提出了一种简单高效的FY-2卫星S-VISSR数据的几何纠正方法。该方法以FY-2标称投影图像(NOM)经纬度对照表作为参考图像,FY-2卫星S-VISSR数据作为输入图像,首先利用S-VISSR数据提供的简化格网数据在两幅图像间获取同名点,然后根据同名点寻找两幅图像间的几何变换模型,最后对S-VISSR数据进行几何纠正。实验表明,利用该方法能够快速地完成对FY-2E和FY-2D卫星S-VISSR数据的几何纠正,其精度达到了1个像素左右。
This Paper proposed a simple and effective geometric rectification approach for FY- 2 S-VISSR data. In this Method, FY-2 normalized projective latitude and longitude compari- son Table is used as the reference image, while FY-2 S-VISSR data is used as the input im- age. Firstly, the tie points between the two images are found by the simplified mapping grid data of S-VISSR data; Secondly, the geometric transformation model between the two ima- ges is estimated by using the tie points; Finally, the input image is rectified by the fixed geo- metric transformation. The experiments demonstrated that FY-2 S-VISSR data could be rec- tified effectively by using the proposed approach, and the accuracy of rectification achieved one pixel or so.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2012年第4期384-388,共5页
Geomatics and Information Science of Wuhan University
基金
国家教育部高校博士研究生自主科研资助项目(201121302020002)
国家科技支撑计划资助项目(2008BAK49B07)
