紫外环形成像仪图像数据的实时处理(英文)  

Real-time processing of image data of ultraviolet annular imager

作　　者：吴伟平[1,2] 王栋[1] 张滨[1] 孙天宇[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《红外与激光工程》2013年第S01期233-237,共5页Infrared and Laser Engineering

摘　　要：为了对紫外环形成像仪精确定标,并辅助其精密装调和结构检测,通过分析紫外环形成像仪的光学结构和其图像数据的特点,设计并实现了紫外环形成像仪图像数据实时处理系统。通过双线程的有机调度,有效降低了系统瓶颈;采用掩码填充方式提高局部高亮显示的性能;使用绘制叠加线的方法提高装调精度;设计了剖线提取等关键功能提高定标效率。定标过程表明,应用这些方法该系统在22.5MB/s满负荷数据流条件下同时对3个波段进行数据解析、CRC校验、图像显示、辅助线绘制和局部高亮显示等功能,整个过程系统运行稳定,人机交互流畅,未发生丢包现象;辅助线可提供像素级的对准精度,保证了装调精度和检测效率,为反演大气辐射多方位的空间分布及动态结构提供了准确的数据支持。For accurately calibrating Ultraviolet annular imager, aiding alignment exactly and measuring its struc- ture, an image data processing system was developed by analyzing the optic structure and data characteristic of the Ultraviolet annular imager. Effectively scheduling two threads reduced the bottle - neck of image data processing system; a method of filling mask increased the performance of local area lightening; painting of overlay curve can improve alignment precision ; the function of picking up inside curve would heighten measuring efficiency. The cal- ibration results show that the image data processing system can synchronously parse 3 bands data, checkout their CRC errors, display images, draw overlay line, and draw cross -sectional curves and lighten local areas with those techniques,when the data flow is up to 22.5MB/s. The system works steadily in all those process and human - computer interaction runs rapidly. No data package was lost in the calibration experiments. The overlay curves can provide pixel level precision alignment. The system ensures measuring efficiency and it also provides exact data for inversing space distribution and dynamic structure of air radiation in all directions.

关 键 词：紫外环形成像仪 图像处理 实时 定标 辅助装调 

分 类 号：TH73[机械工程—仪器科学与技术]