指纹携带有人类的特殊信息,是最重要的个体特征之一。快速、清晰的指纹识别和提取对于刑事侦探、公共安全等领域具有重要的意义。金属纳米颗粒在暗场下对光具有强烈的散射作用,本文利用这一散射特性来研究指纹成像。在暗场成像条件下,当指纹和金属纳米颗粒相结合,金属纳米颗粒的散射性能呈现出指纹细节特征。这一特性为指纹的提取提供一种新方法,该方法可实现快速、简单的指纹信息提取,避免了化学方法对指纹细节信息的破坏。

Fingerprint carries human special information,which is one of the most important individual characteristics.The technology of fast and clear fingerprint recognition and extraction is of great significance to criminal detectives,public safety and other fields.Metal nanoparticles have strong scattering effect in the dark field of light,and this paper studies the fingerprint imaging using the scattering characteristics.Under the dark field imaging system,with the combination of fingerprint and metal nanoparticles,the scattering properties of metal nanoparticles show fingerprint minutiae.This characteristic provides a new strategy for fingerprint extraction.This method can realize fast and simple fingerprint information extraction and avoid the destruction of fingerprint details by the chemical method.