面阵航测相机摄影数据高效处理系统方案设计与实现

System Scheme Design and Implementation of High Performance Photogrammetric Data Processing System of Large Format CCD Aerial Camera

鉴于国产大面阵航测相机具有摄影数据大、技术体制新、处理效率要求高等特点，现有国外引进航测相机的影像处理系统难以满足其要求。本文针对国产相机摄影数据处理需求，设计提出一种系统解决方案并予以实现。该方案在充分分析摄影数据处理任务及要求、并借鉴当前计算机技术发展最新水平的基础上，将摄影数据处理任务划分为公用基础功能和专业处理功能两部分：公用基础功能部分承担整个数据处理流程所需的任务调度、数据管理、CPU／GPU并行计算、影像数据分布式存储等基础支撑任务；专业处理功能部分则完成摄影数据规则化处理、几何处理、辐射处理、融合处理等预处理任务。该方案有效实现了基础支撑环境和专业应用处理算法之间的分离，不仅极大提高了处理效率，而且能够在固定式和移动式等不同平台环境进行部署，体现了较强的灵活性和扩展性。试验应用证明，该系统能够有效完成面阵航测相机摄影数据处理，对其它高性能、高自动化程度的遥感大数据处理系统设计具有借鉴作用。

Since the domestic large format CCD aerial camera has some features including massive amount of photogrammet- rie data, new technological system, high requirement for efficiency and so on, the image data processing system introduced from foreign countries cannot meet the demand. In order to satisfy the photogrammetric data processing demand, a system scheme a- dopting latest computer technologies is proposed and realized on the basis of a comprehensive analysis of the processing task and requirements. The whole data processing task is divided into universal basic function and professional processing function. The former is responsible for basic support like dispatching, data management, CPU ＆ GPU parallel computing, image data distribu- ted storage etc. , while the latter for raw data regularization, geometric processing, radiation processing, image fusion, etc. Since the system scheme realizes the separation of basic support environment and professional algorithms, the processing efficiency is significantly improved and it can be deployed to multiple platforms including fixed and mobile ones, which reflects the great flexi- bility and scalability of the scheme. The experiment result shows that the system can process big data efficiently, and provide ref- erence for the design of other similar remote sensing big data processing systems.