数字微镜器件在高动态辐射场景成像探测系统中的应用  

Application of DMD to high dynamic scene image detection system

作　　者：王延杰[1,2] 陈怀章[1,3] 刘艳滢[1,2] 孙宏海[1,2] 杨振永[1,3] 何舒文[1,3] 

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]中国科学院长春光学精密机械与物理研究所中国科学院航空光学成像与测量重点实验室,吉林长春130033 [3]中国科学院大学,北京100049

出　　处：《光学精密工程》2014年第9期2508-2517,共10页Optics and Precision Engineering

基　　金：国家863高技术研究发展计划资助项目(No.2012AA7031010B)

摘　　要：由于数字微镜器件(DMD)空间光调制器结合图像传感器能同时探测高动态场景中的亮暗目标,本文研究了DMD在高动态辐射场景成像探测系统中的应用。首先,介绍了DMD实现成像探测的原理,分析了DMD在高动态场景成像探测系统中的驱动控制方法。然后,根据DMD在高动态辐射场景成像探测系统中的工作特性,设计了能使光电成像设备提高66dB的DMD的驱动控制。文中阐述了系统的主要设计模块和工作参数,并结合实验验证了系统设计的正确性。实验结果表明:该驱动控制方法能够实现对高动态场景中亮暗目标的同时探测,满足对光电成像设备动态范围提高66dB的要求。若光电成像设备采用11位高灵敏高动态科学级图像传感器,则系统动态范围可达130dB以上。As spatial light modulators based on Digital Micro-mirror Devices （DMDs） combined with image sensors could detect strong and weak targets in high dynamic scenes and get high dynamic images, this paper researches the application of DMDs to high dynamic scene image detection systems. Firstly, the application principle of the DMD was introduced, and how to control and drive the DMD in the high dynamic scene image detection system was analyzed. Then, based on DMD＇s working characteristics, a control driver was designed to make optoelectronic image equipment improve its dynamic range by 66 dB. The main modules were described and working parameters in the system were given. Finally, the feasibility of the system was verified experimentally. The result shows that the control driver detects the strong and weak targets simultaneously in the high dynamic scene, and improves the dynamic range of 66 dB. When a 11 bit higher sensitive imaging sensor is used in the system, the dynamic scene will be over 130 dB.

关 键 词：成像探测 数字微镜器件 高动态场景 驱动控制 调光 

分 类 号：TP73[自动化与计算机技术—检测技术与自动化装置] TN76[自动化与计算机技术—控制科学与工程]