基于主动偏振光的潜指纹偏振成像检测方法研究

作为一种无损检测方法,光学检验法是多种潜指纹检测方法中的首选。在面对越来越复杂的应用场景时,传统光学检验法往往效果不佳。然而偏振成像探测技术不仅能够获得目标的强度和光谱等信息,而且还能够得到偏振度和偏振角等反映目标表面细节特征的偏振信息,因此可以提高潜指纹检测效果。利用偏振成像技术的优势,开展了基于主动偏振光的潜指纹偏振成像检测实验研究,获取了指纹图像数据并对其进行了分析。结果表明,与一般的强度成像相比,本文方法所得到的潜指纹偏振参量图像质量更高,获取的图像更清晰,细节信息更丰富。

Research on Polarization Imaging Detection Method of Latent Fingerprints Based on Active Polarized Light

As a nondestructive method, optical inspection is the preferred method in several latent fingerprint detection methods. In the face of increasingly complex application scenes, the traditional optical inspection method is often ineffective. However, the polarization imaging detection not only can obtain the intensity and spectral information of a target, but also can obtain the polarization information such as polarization degree and polarization angle etc reflecting the surface details of the target. By use of the advantages of polarization imaging, the research on polarization imaging detection of latent fingerprints based on active polarized light is carried out. The fingerprint image data is obtained and analyzed. The result shows that compared with the common light intensity imaging, the method can obtain higher quality latent fingerprint images. The images are clearer and have more detail information.