HJ-1 CCD图像自动几何精纠正系统的设计与实现

Design and implementation of automatic accurate geometric correction system fot HJ-1 CCD images

由于环境与灾害监测预报小卫星HJ-1A/1B星CCD数据幅宽大,时间分辨率高,数据量大,实现一个自动几何精纠正系统有迫切的现实意义。描述一个HJ-1 CCD图像自动几何精纠正系统的框架设计和集成实现方案,包括系统功能组成、工作流程和模块集成方法以及系统的具体实现过程和实验结果的分析。系统采用全球或局部区域的经过地理编码的TM数据作为基准图像,将图像精纠正问题转化为图像自动配准的问题,同时通过任务流程管理实现图像的批量处理功能。

The CCD data of small HJ-1A/B satellites which used to environment and disaster monitoring and forecasting is of largerswath width, high temporal resolution, and big size. Therefore, it is urgent to establish an automatic accurate geometric correction system. The designed framework and integration method of an automatic geometric correction system for HJ-1 CCD data was described, including the components, work flows, module integration and the working process of the automatic geometric correction system. The automatic geometric correction results on experimental data was introduced. Based on the global and local TM data which have been geometrically corrected, the image geometric accurate correction problems were changed into image automatic registration problems. And image batch processing was implemented by task flows management module.