Fingerprint scanner using digital interference holography

Mariana C. Potcoava; Myung K. Kim

doi:10.1117/12.818276

5 May 2009 Fingerprint scanner using digital interference holography

Mariana C. Potcoava, Myung K. Kim

Proceedings Volume 7306, Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI; 730627 (2009) https://doi.org/10.1117/12.818276
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

We present three-dimensional imaging of artificial fingerprints using the Digital Interference Holography (DIH) scanner. DIH is based on a multiwavelength optical sensing technique that can be used to build holographically the three dimensional structure of the fingerprints. Many holograms (~50) were acquired by a CCD camera by scanning a range of wavelengths. Each hologram was numerically reconstructed and then superposed yielding tomographic images which represented the artificial fingerprint structure. The axial resolution is a parameter that depends on the wavelength scanning range and is about 5 μm. The light source was a solid state pumped dye laser with a tunable wavelength range of 550 nm to 600 nm. Holograms were captured by a monochrome CCD camera (Sony XC-ST50, with 780 × 640 pixels and a pixel size of ~ 9 μm). An image acquisition board (NI IMAQ PCI-1407) digitized the image with 8 bit resolution. All software was developed in house with the NI LabView. We used a Michelson interferometer in a backscattering geometry and the reconstruction of the optical field was done using the angular spectrum algorithm. Our goal is to identify and quantify, Level 1 (pattern), Level 2 (minutia points), and Level 3 (ridge contours) features from the amplitude images, using the DIH technique and fingerprints recognition. The results could be used in the two fingerprint matching phases, identification and verification.

Citation Download Citation

Mariana C. Potcoava and Myung K. Kim "Fingerprint scanner using digital interference holography", Proc. SPIE 7306, Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI, 730627 (5 May 2009); https://doi.org/10.1117/12.818276

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