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.
© 2009 Optical Society of America
Original Manuscript: June 16, 2009
Revised Manuscript: July 27, 2009
Manuscript Accepted: July 28, 2009
Published: August 10, 2009
Vol. 5, Iss. 1 Virtual Journal for Biomedical Optics
Mariana C. Potcoava and Myung K. Kim, "Fingerprint biometry applications of digital holography and low-coherence interferography," Appl. Opt. 48, H9-H15 (2009)