基于场景的三通道偏振成像系统的校正方法  

Scene-based correction method of three-channel imaging system

作　　者：季尔优[1] 顾国华[1] 柏连发[1] 钱惟贤[1] 

机构地区：[1]南京理工大学电光学院光电技术系,南京210094

出　　处：《强激光与粒子束》2013年第9期2235-2240,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(61101199);江苏省自然科学基金项目(BK201199);南京理工大学自主科研重大研究计划项目(20112DJH22)

摘　　要：基于定标的三通道偏振成像系统的校正方法在对通道响应度非一致性的标定过程中操作繁琐,无法根据实际环境的变化随时校正,影响了三通道偏振成像系统的实用性。为了解决这一问题,提出了一种基于场景的三通道成像系统的校正方法。该方法基于对场景中偏振信息的统计,分离出复杂场景中无偏振性的场景分量,简单快速地修正了各通道的灰度响应差异。实验结果表明:该方法克服了通道响应度非一致性的影响,突出不同材质物体的偏振差异,使三通道偏振成像系统的成像效果接近单通道偏振成像系统水平,极大地提高了系统的实用性。The correction method of three-channel polarization imaging system based on calibration is very complex in the process of calibrating non-uniformity of channels＇ responsiveness,and this method cannot correct the non-uniformity when the physical environment changes.It affects the practicality of the polarization of the three-channel imaging system.To solve this problem,a scene-based correction method of the three-channel imaging system is proposed.The method is based on the statistics of polarization information in the scene.It separates non-polarized scenes from complex scenes,and fixes the differences of gray response among the three channels simply and quickly.As is shown in the experimental results,this method overcomes the impact of non-uniformity of channels＇ responsiveness,gives prominence to the differences between the polarization of the different materials,makes the imaging effect of the three-channel polarization imaging system close to that of a single-channel polarization imaging system,and improves the practicality of the system perfectly.

关 键 词：偏振 实时 非一致性 校正 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]