红外成像目标模拟器图像生成系统的实时性措施  

Real-time measures for image generation system of IR imaging target simulator

作　　者：廖守亿[1] 苏德伦[1] 张金生[1] 王仕成[1] 

机构地区：[1]第二炮兵工程学院测试与控制工程系,陕西西安710025

出　　处：《红外与激光工程》2010年第3期377-382,共6页Infrared and Laser Engineering

基　　金：中国博士后科学基金资助项目(20080441274);航空科学基金资助项目(20080112005)

摘　　要：动态红外图像实时生成是红外成像制导半实物仿真系统目标模拟器的关键技术之一。图像生成的质量与实时性是设计和研制红外图像实时生成系统需重点考虑的问题。介绍了某红外图像实时生成系统的设计方案,详细阐述了系统的实时性措施。从系统的硬件选型、硬件设计和软件设计共7个方面(即选用基于反射内存的实时通信网络、基于PC架构的图形工作站、关闭垂直同步、驱动控制单元实时性设计、WindowsXP系统实时性改造、图像渲染控制与帧时间测试、非均匀性校正算法的在线查表)出发,来保证图像生成的实时性。红外图像实时生成系统的测试表明:图像生成的帧时间可控制在5ms内,满足全系统200Hz帧频的要求,所采取的实时性措施是有效的。Dynamic IR image real-time generation is one of the key technologies of the target simulator in hardware-in-the-loop （HWIL） system for IR imaging guidance. So the image quality and real-time performance must be considered in the design and implementation of IR image real-time generation system. The design scheme of an IR image real-time generation system was introduced. And the system′ s real-time measures were described in detail. To guarantee the real-time performance of image generation, hardware selection,design and software design, seven measures were proposed, including real-time communication network based on reflective memory network （RMN）, PC based workstation, close vertical synchronization, real-time design of drive-control unit, real-time reconstruction of Windows XP, image rendering control and frame time test, online lookup table algorithm for nonuniformity correction （NUC）. The test shows that the frame time is controlled within 5 ms, can satisfy the system′s requirement frame frequency of 200 Hz, so the real-time measures are effective.

关 键 词：实时性 红外成像 红外图像生成系统 MOS电阻阵列 非均匀性校正 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]