基于快速匹配与线性橡皮拉伸的HJ-1CCD影像几何精校正

HJ-1CCD Image Geometric Accurate Rectification based on Fast Matching and Linear Rubber Sheeting

提出了一种快速获取大量地面控制点的方法,以TM影像为基准图像选择初始同名点,经过自动计算误差、调整、平移误差消除、删除等步骤获取稳定的其他同名点,并采用线性橡皮拉伸进行几何精校正。试验证明,利用该方法进行几何精校正后的HJ-1CCD影像不但加快了选点速度而且能保证精度,可以用于遥感信息的提取以及为地理信息系统等提供可用的数据。

The study put forward a rapid method to access a large number of ground control points, based on TM image as the reference image selection of initial corresponding points, through the steps of automatic calculation error, adjustment,translation error elimination, and deletion, obtained other stable matching points, and used linear rubber sheeting for geometric correction. Experiments showed that, HJ-1CCD image after geometric correction not only accelerated the speed and position but also ensured accuracy, which can be used to provide data available for extracting the information of remote sensing and geographic information system.