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Information Technology

Biometrics

Search Publications

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Displaying 1 - 25 of 412

EVALUATING IDENTITY LEAKAGE IN SPEAKER DE-IDENTIFICATION SYSTEMS

August 21, 2025
Author(s)
Seungmin Seo, Oleg Aulov, Afzal Godil, Kevin Mangold
Speaker de-identification aims to conceal a speaker's identity while preserving intelligibility of the underlying speech. We introduce a benchmark that quantifies residual identity leak- age with three complementary error rates: equal error rate (EER)

Considerations for Implementing Morph Detection in Operations

August 18, 2025
Author(s)
Mei Ngan, Patrick Grother
Morphing of face photographs present a threat to identity processes; for example, two people being able to use one passport. The threat exists in applications that allow users to submit their own photos where digital history is unknown. The threat can be

Quasi-Deterministic Channel Propagation Model for Human Sensing: Gesture Recognition Use Case

July 9, 2025
Author(s)
Jack Chuang, Raied Caromi, Jelena Senic, Samuel Berweger, Neeraj Varshney, Jian Wang, Anuraag Bodi, Camillo Gentile, Nada Golmie
We describe a quasi-determinstic channel propagation model for human gesture recognition reduced from real-time measurements with our context aware channel sounder, considering four human subjects and 20 distinct body motions, for a total of 120,000

Contactless Fingerprint Capture and Data Interchange Best Practice Recommendation Revision 1

August 5, 2024
Author(s)
Shahram Orandi, Craig I. Watson, Jennifer Stathakis, John M. Libert, Gregory Fiumara, John Grantham
While contactless fingerprint capture devices stand to provide for many benefits, images from this nascent technology are sufficiently different than traditional contact-collected images thereby warranting the separation of these new contactless

An Open Source Iris Segmentation Algorithm for Non-ideal Images

March 7, 2024
Author(s)
George W. Quinn
This document describes a new approach to localizing the iris boundaries in non-ideal iris images. The proposed algorithm starts by applying a series of morphological operations to enhance the salience of the iris boundaries while mitigating the impact of

Repeatability of Contactless and Contact Fingerprint Capture

September 12, 2023
Author(s)
John M. Libert, Shahram Orandi, John Grantham, Kenneth Ko, Bruce Bandini
A new generation of contactless fingerprint capture devices has recently emerged. These devices provide the ability to capture a fingerprint without making physical contact with the finger. There is anecdotal evidence that the process of capturing a

Guidance on Contactless Friction Ridge Image Compression, v1.0

May 3, 2023
Author(s)
John M. Libert, Shahram Orandi, Kenneth Ko, Bruce Bandini, John Grantham, Craig I. Watson
Nascent technologies show promise in collecting 500 ppi fingerprints in a contactless fashion while yielding various improvements in the collection process over legacy contact collection methods currently in use throughout the world. While it has been

Specification for Certification Testing of Contactless Fingerprint Acquisition Devices, v1.0

April 4, 2023
Author(s)
Shahram Orandi, John M. Libert, John Grantham, Kenneth Ko, Bruce Bandini, Craig I. Watson
This specification builds upon the protocols and metrics established in NIST Special Publication 500-336 and defines procedures for the evaluation and certification of contactless fingerprint acquisition devices with respect to certified legacy contact

The 2022 NIST Language Recognition Evaluation

February 28, 2023
Author(s)
Yooyoung Lee, Craig Greenberg, Asad Butt, Eliot Godard, Elliot Singer, Trang Nguyen, Lisa Mason, Douglas Reynolds
In 2022, the U.S. National Institute of Standards and Technology (NIST) conducted a Language Recognition Evaluation (LRE), which was the latest in an ongoing series of language detection evaluations administered by NIST since 1996. The LREs measure how

Scalable Modeling of Human Blockage at Millimeter-Wave: A Comprehensive Analysis of Knife-Edge Diffraction, the Uniform Theory of Diffraction, and Physical Optics Against 60 GHz Channel Measurements

December 22, 2022
Author(s)
Anmol Bhardwaj, Camillo Gentile, Jelena Senic
Human blockage at millimeter-wave frequencies is most commonly modeled through Knife-Edge Diffraction (KED) from the edges of a vertical strip. Although extensively validated through controlled laboratory experiments, the method does not scale to realistic

NIST 2022 Language Recognition Evaluation Plan

August 31, 2022
Author(s)
Yooyoung Lee, Craig Greenberg, Lisa Mason, Elliot Singer
The 2022 NIST language recognition evaluation (LRE22) is the 9th cycle in an on-going language recognition evaluation series that began in 1996. The objectives of the evaluation series are (1) to advance technologies in language recognition with innovative

Forensic Iris: A Review, 2022

July 18, 2022
Author(s)
James Matey, George W. Quinn, Patrick Grother
John Daugman correctly summarized the state of forensic iris recognition circa 2006 for the book Forensic Human Identification: an Introduction [1]: Iris recognition has limited forensic value, because (unlike fingerprints or DNA, for example) (1) iris

Specification for Interoperability Testing of Contactless Fingerprint Acquisition Devices

June 8, 2022
Author(s)
John M. Libert, Shahram Orandi, Bruce Bandini, Kenneth Ko, Craig I. Watson, Christopher Stafford, Matthew E. Staymates, John Grantham
This guidance specifies a protocol and associated metrics for the evaluation of contactless fingerprint acquisition device, and their interoperability with legacy devices. This protocol enables contactless fingerprint developers seeking certification of

NIST Special Database 302: Supplemental Release of Latent Annotations

November 2, 2021
Author(s)
Gregory Fiumara, Matthew Schwarz, Jessica Heising, Jennifer Peterson, Patricia A. Flanagan, Karen Marshall
The National Institute of Standards and Technology (NIST) released a collection of latent fingerprint images as part of Special Database (SD) 302 in December 2019. While the dataset included 10 000 never-before-seen operational quality images from 200

Evaluating the Impact of Contactless Fingerprint Imagery Spatial Loss on Matcher Performance

September 23, 2021
Author(s)
Shahram Orandi, John M. Libert, Bruce Bandini, Kenneth Ko, John Grantham, Brian J. Cochran, Craig I. Watson
Observations in previous studies have shown that contactless capture devices may be prone to capturing superfluous data (e.g., fingernail or finger background), distortion and imaging artifacts especially around the periphery of the captured fingerprint
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