面向目标探测识别的红外偏振信息表征与增强方法研究

With the camouflage target detection and recognition applications based on infrared (IR) polarization information under complex environment, in this project we study the key problems for IR plolarization target detection and recognition, especially the problem of IR polarization representation and image enhancement. The research approaches include: ① The representation method of infrared polarization information will be researched using IR polarization images of typical targets under complex background. Based on the analysis of targets' IR polarization information under diferent polorized angle, the mathematical description and parameter estimation method of targets' infrared polarization information will be realized. ② Based on the virtual polarization adaption theory, two adaptive virtual polarization changing filters will be studied, one is based on the nonlinear filtering optimal polarization parameters estimation and the other is based on the adaptive background cancellation using cross-correlation method. The filters will be used to impove signal-to-clutter/noise ratio of the infrared polarization images. The innovations of this project are that it has combined advanced polarization theory with IR polarization characteristics, and explored new theory and method about IR polarization image processing, and would provide a wholly new way to solve the target detection and recognition problems of systems such as infrared guidance and airborne detection under complex clutter background.

本课题面向复杂背景下伪装隐蔽目标的红外偏振探测识别应用，围绕基于红外偏振信息目标探测识别中的关键问题，重点开展目标红外偏振信息表征与增强方法的研究。本项目的研究思路为：①基于复杂背景下典型目标的红外偏振图像，开展红外偏振信息表征方法研究，对不同起偏方向下的红外偏振信息进行分析，并在此基础上实现红外偏振特征的数学描述和表征参数估计；②依据虚拟极化适配原理，开展基于非线性滤波的最优偏振态估计和基于互相关的自适应背景对消等两种虚拟变偏振方法研究，实现背景抑制、目标增强。本课题的创新之处在于将先进极化理论和红外偏振特征相结合，探索红外偏振图像处理的新理论和新方法，为解决红外制导、机载探测等系统面临的复杂干扰环境下目标探测识别问题提供新的思路和方法。

针对红外偏振成像探测中亟待解决的伪装/隐身目标红外偏振信息表征和信息增强问题，通过仿真和实测数据验证和完善了偏振信息表征模型以及偏振信息增强方法，从虚拟极化适配理论和红外偏振信息相结合的角度探索了红外图像处理的新方法。项目组在该项目支撑下，先后在“Journal of Systems Engineering and Electronics”等学术期刊及国际会议发表相关论文10篇，授权国防专利或者软件著作权等3项，取得了良好的学术价值和应用价值，项目组在红外偏振信息处理研究领域产生了较好的社会影响力。项目组在该项目资助下，申请并授权的国防专利及软件著作权“一种基于虚拟变偏振的红外面目标增强方法”、“基于全方向偏振分解的红外目标增强”、“基于虚拟偏振的红外目标增强软件”等先后被应用于航天科工集团某新型导引头信息处理系统，以及湖南基石创新科技有限公司无人机对地观测平台信息处理系统中，取得了良好的社会效益。