期刊论文

中文

北京林业大学学报

1000-1522

2003

25

2

58-62

10.3321/j.issn:1000-1522.2003.02.013

湖南省教育厅科研项目 中南林学院校科研和教改项目

本校为第一机构

传统的航空相片纠正多采用光学仪器进行纠正,这种方法在数学上有一定的局限,从而影响纠正后的航片精度.为解决这一问题,该文采用数字技术,在遥感图像处理软件ER MAPPER 6.2帮助下,对航空相片采用了不同控制点数,不同次数的多项式分别进行几何位置纠正,其校正空间为高斯投影系统,并对不同的纠正结果进行了精度比较和分析.结果表明:多项式法对地形较平坦地区的航空相片纠正具有较好的拟合度;除采用4个控制点的线性纠正方法误差较大外,控制点数的增加,以及采用一次、二次和三次多项式对航空相片纠正的精度没有明显差异.研究还表明,控制点匹配的准确性是影响该次研究精度的关键.

Traditionally airphotos are mainly rectified by optical instruments, but these methods have a lot of mathematical problems and can't get good rectification accuracy. The authors of this paper rectified airphotos to Gauss coordinate system in different GCPs and different multinomial by ER MAPPER6.1. The result showes that the airphoto in flat areas rectified in multinomial has good rectification accuracy, and also shows that there are no evident differences among different GCPs and among different multinomial rectification methods such as linear, quadric and cubic. The paper indicates that the ...