CAJ | 학술논문

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。
침대복잡배경중위장목표편진검측적문제，이중국안색체계위기출，기우CIE1976L*a*b*안색공간건립료LMS화lαβ량충안색공간적256급량도분량수거표，통과외장편진검측실험，조도료목표여배경편진도대비교고시적편진편최가삼고방향，병연구료저량충공간재차방향상표정편진신식적우렬화반영편진검측능력강약적문제。실험결과표명，이편진편최대투광방향수직우입사면위삼고방향，재량조도하，L공간적편진도상비기회도도신식량강저심소，표정목표편진신식량능력교강；재암조도하，l공간적편진도상비기회도도불부목표여배경적대비도명현제고，이차대음영목표검측능력교강，실험결과여인안관찰결과일치。
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.