通用遥感图像系统几何校正算法设计与实现  

Design and Implementation of Systematically Geometric Correction Algorithm Based on Design Patterns

作　　者：赵仕美 李景山[1] 李雨航[1,2] 

机构地区：[1]中国科学院遥感与数字地球研究所,北京100094 [2]中国科学院大学,北京100049

出　　处：《遥感信息》2016年第3期16-23,共8页Remote Sensing Information

摘　　要：针对多卫星多传感器系统几何校正的通用可扩展性问题,提出了一种基于设计模式的系统几何校正算法。该算法运用模板方法和简单工厂方法,解决了多卫星多传感器在系统几何校正过程中的差异性问题,实现不同卫星不同传感器的系统几何校正处理。通过规范辅助数据的输出格式解决多卫星多传感器校正参数不统一的问题;抽象出系统几何校正功能的一般执行过程,在模板方法中确定该功能的执行逻辑;运用简单工厂方法,用卫星和传感器标识作为参数,选择具体的实现算法,完成相应的处理功能。实验结果表明,该算法能够在保证定位精度的情况下实现对多卫星多传感器的校正处理,并在不改变原有代码的情况下实现对新增卫星传感器的系统几何校正功能的扩展。Versatility and scalability of systematically geometric correction is still a challenging problem in remote sensing satellite ground processing system.Based on design patterns,this paper proposes the design and implementation of geometric correction algorithm.Through using the template method and factory method of design patterns,the difference in the systematically geometric corrected process of different satellites and sensors is solved.To solve the disunified auxiliary data format,the output format of auxiliary data is specified;using template method design pattern,we abstract the general process and set up the outline of systematically geometric correction;using factory method design pattern and satellite and sensor identification as parameters,we can select the specific systematically geometric correction algorithm.Experimental results show that the geometric corrected processing algorithms of various satellites and sensors can be added through inheriting,which ensures the scalability of data processing algorithms.

关 键 词：设计模式 通用性 可扩展性 系统几何校正 辅助数据分离 严密成像几何校正模型 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]