基于LMS、lαβ颜色空间的最佳参考方向伪装目标偏振检测  

Camouflage target detection of the best polarized reference direction based on LMS and lαβ color space

作　　者：黄雁华[1] 武文远[1] 龚艳春[1] 何苏红[1] 杜华月[1] 李霞[1] 

机构地区：[1]中国人民解放军理工大学理学院,江苏南京211101

出　　处：《红外与激光工程》2014年第2期633-639,共7页Infrared and Laser Engineering

摘　　要：针对复杂背景中伪装目标偏振检测的问题,以中国颜色体系为基础,基于CIE1976L*a*b*颜色空间建立了LMS和lαβ两种颜色空间的256级亮度分量数据表,通过外场偏振检测实验,找到了目标与背景偏振度对比较高时的偏振片最佳参考方向,并研究了这两种空间在此方向上表征偏振信息的优劣和反映偏振检测能力强弱的问题。实验结果表明,以偏振片最大透光方向垂直于入射面为参考方向,在亮照度下,L空间的偏振图相比其灰度图信息量降低甚少,表征目标偏振信息量能力较强;在暗照度下,l空间的偏振图相比其灰度图不仅目标与背景的对比度明显提高,而且对阴影目标检测能力较强,实验结果与人眼观察结果一致。Considering camouflage target polarization detection under the complicated background, basing the Chinese color system and CIE1976L＊a＊b＊ color space, the 256 gray levels table was established by LMS and lαβcolor space. A best polarized reference direction was found out by field experiments of the high polarization degree target-background contrast. Representing polarization information advantages-disadvantages and reflecting polarization detection capability strengths-weaknesses was further researched. Experimental results showed that, the linearly polarization direction of perpendicular to the incident is a best reference direction, the polarization image of LMS space was reduced few information than its gray image in the bright illumination, but possessed the stronger ability of representing target polarization information; polarization image of lαβspace was compared its gray image in low illumination, not only the contrast of targets and background was obviously improved, but also the detecting ability of shadowed target was stronger, the calculation results is consistent with the interpretation results of human eye.

关 键 词：参考方向 偏振检测 伪装目标 LMS颜色空间 lαβ颜色空间 

分 类 号：E951.4[军事—军事工程]