Potcoava Mariana C, Kim Myung K
Department of Physics, University of South Florida, Tampa, Florida 33620, USA.
Appl Opt. 2009 Dec 1;48(34):H9-15. doi: 10.1364/AO.48.0000H9.
We use several holographic and interferographic methods for two- and three-dimensional imaging of fingerprints. Holographic phase microscopy is used to produce images of thin-film patterns left by latent fingerprints. Two or more holographic phase images with different wavelengths are combined for optical phase unwrapping of images of thicker patent prints or a plastic print. Digital interference holography uses scanned wavelengths to synthesize short-coherence interference tomographic images of a plastic print. We also demonstrate light-emitting-diode-based low-coherence interferography for imaging plastic as well as latent prints. These demonstrations point to significant contributions to biometry by the emerging technology of digital holography and interferography.
我们使用多种全息和干涉测量方法对指纹进行二维和三维成像。全息相位显微镜用于生成由潜在指纹留下的薄膜图案的图像。将两个或多个具有不同波长的全息相位图像组合起来，用于对较厚的清晰指纹或塑料指纹图像进行光学相位展开。数字干涉全息术使用扫描波长来合成塑料指纹的短相干干涉断层图像。我们还展示了基于发光二极管的低相干干涉测量技术，用于对塑料指纹以及潜在指纹进行成像。这些演示表明，数字全息术和干涉测量术这项新兴技术对生物识别有重大贡献。
