基于一种新型去雾降噪算法的目标偏振信息获取技术及其在透雾成像中的应用研究

项目名称： 基于一种新型去雾降噪算法的目标偏振信息获取技术及其在透雾成像中的应用研究

项目编号： No.61505246

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 梁健

作者单位： 中国科学院西安光学精密机械研究所

项目金额： 18万元

中文摘要： 偏振光学成像技术是一种基于对目标反射光偏振信息获取的新型成像技术，可以使目标呈现出与强度信息和光谱信息完全不同的独特信息，在军用和民用领域均表现出非常重要的应用价值。然而在雾霾条件下，雾霾颗粒的散射作用不仅会削弱目标反射光的偏振信息，而且会产生具有一定偏振信息的大气散射光，从而给目标反射光偏振信息的准确获取带来了困难，限制了偏振光学成像技术的应用。本项目拟开展雾霾气象条件下的目标偏振信息获取技术及其透雾成像应用研究。具体研究内容：研究雾霾颗粒对大气光的散射偏振特性，揭示目标反射光与大气散射光偏振特性的本质区别，设计一种精确估算大气杂散光强的新方法；基于此方法建立一种可直接对单幅图像进行去雾的偏振成像降噪算法；基于该算法开展目标偏振度、偏振角等偏振图像信息的高保真获取技术及透雾成像实验应用研究。本项目的开展对提高偏振光学成像技术在雾霾等不良气象环境中的适用性具有重要的应用价值和科学意义。

中文关键词： 偏振成像；偏振去雾；偏振信息获取

英文摘要： The polarimetric optical imaging technique is a novel imaging method which can obtain the polarization information of the light reflected by the objects. It can show completely different and unique information compared to the intensity and spectrum information. So, this technique has many potential application values in military and civil fields. However, in the hazy condition, it will be difficult to precisely obtain the polarization information reflected by objects, because the scattering effect will not only reduce the polarization information of the light reflected by objects, but also produce stray light with partial-polarization information. This drawback confines the applications of polarimetric imaging technique. We aim to systematically study polarization-information retrieval technology of targets and its application in hazy conditions. The main contents are as follows: to study the polarization properties of the stray light scattered by the haze, to reveal the natural differences between the reflected light and the stray light, as well, to build a new method used to estimate the stray light fast and precisely; Based on this research, we could establish a new polarimetric dehazing algorithm which can achieve single-image dehazing; Finally, the image that with the polarization characteristics of objects (e.g. degree of polarization or angle of polarization) and the corresponding experiments can be further studied. This project has important application values and scientific meanings in improving the applicability of this polarimetric optical imaging technique in hazy condition.

英文关键词： polarimetric imaging;polarimetric dehazing;polarimetric information retrieval