偏振矢量图像融合用于指纹增强显示

Polarization Vector Image Fusion for Fingerprint Enhancement Display

光学成像指纹检测作为一种无损、非接触检测方法,是指纹检测的首选技术。偏振成像技术基于偏振信息的获取,可识别不同材质的物体,尤其对于指纹这一类对光强调制不明显而对偏振态调制明显的物体,具有优越的成像效果。研究了基于多维偏振信息实现指纹成像对比度提升方法的研究,创新性地将指纹的多维偏振信息表征为彩色图像。实验结果表明,相对于传统的灰度偏振指纹图像,提出的指纹偏振图像彩色表征方法可显著提升指纹的对比度。

As a non-destructive and non-contact testing method,optical imaging fingerprint detection is the preferred technology for fingerprint detection.Polarization imaging technology based on the acquisition of polarization information can identify different materials and has excellent imaging effect especially for objects such as fingerprints,which have obvious modulation on polarization state.The contrast enhancement method of fingerprint imaging based on multi-dimensional polarization information is studied,and innovative characterization of multi-dimensional information of fingerprints as color images is proposed.Experiment results show that,compared with the traditional gray polarized fingerprint image,the proposed color characterization method of fingerprint polarization image can significantly improve the contrast of fingerprints.