室内复杂场景中隐蔽光电目标的侦测理论与技术研究

With the development and widespread use of recording equipment such as pinhole cameras, miniature cameras, and smartphone cameras, indoor activities are facing an increasingly serious threat of illegal pirate and information disclosure. Examples include movie theatre, meeting house, private room, research laboratory, and so on. This study focus on the research of detecting theory and technology of concealed photoelectric imaging systems in complex interior environment. Based on the theory of “cat’s eye effect”, the study uses active laser detection to reveal the character difference between a true photoelectric target and a false alarm. A feature model shall be built based on the character difference. By using the feature model, an efficient feature extraction technique and a target recognition method will be proposed to break through the bottleneck of high false alarm rate. This study will develop the photoelectric target detecting theory and technology. It is of importance in the interior anti-peeping detection equipment promotion on the aspect of theory support, and is of great value in practical applications for social, commercial and military information security.

随着针孔摄像头、微型相机、手机镜头等光电图像采集设备的发展和普及，在影剧院、会议场所、私人房间和技术实验室等室内场所中的各类活动都面临着日益严峻的盗版侵权和信息泄漏威胁。本课题以室内复杂场景中的隐蔽光电成像系统为研究对象，基于光电成像系统的“猫眼效应”理论,采用激光主动探测的方法进行研究，揭示光电目标与伪目标在主动光不同施照条件下的特性差异，并建立起两者之间的差异性特征模型，提出高效的特征提取技术和目标识别方法，突破信号误警率高的瓶颈，推进光电目标侦测理论和技术的发展。本课题对提高室内反窃视侦测设备性能有着重要的理论意义，在社会、商业、军事等信息安全领域中有重大的应用价值。

受窃取政治、军事、商业及个人隐私秘密的情报或利益需求的驱使，微型光电成像设备常常被隐蔽地埋置于室内场景中，给室内正在进行的各类敏感活动（诸如政治会晤、军事部署、商业洽谈和私人活动等）带来严峻的信息泄露威胁。当前，使用激光主动探测技术可实现对室内光电目标的探测和定位，但仍然存在真伪目标混淆导致虚警率过高的瓶颈问题。本课题针对此难题，从对室内场景中背景及典型干扰物的特征研究入手，通过使用多谱段复合脉冲激光作为主动激励光源，探索光电目标与干扰物所产生的伪目标之间在多特征维度上的差异性模型，以及分布式探测模式下其特征随入射角和探测距离变化的一般规律，依据获取的多维特征信息识别真伪目标，突破信号误警率高的瓶颈，推进光电目标侦测理论和技术的发展。本课题对提高室内反窃视侦测设备性能有着重要的理论意义，在社会、商业、军事等信息安全领域中有重大的应用价值。