A comparison has been made of the air-kerma standards for medium-energy x-rays of the National Institute of Standards and Technology (NIST) and the Bureau International des Poids et Mesures (BIPM). The comparison involved a series of measurements at the BIPM and the NIST using the air-kerma standards and three NIST reference-class transfer ionization chamber standards. Reference beam qualities ...

Development of a calibration facility for spectroradiometric, colorimetric, and goniometric measurements of displays, display colorimeters, and spectroradiometers has been completed at the National Institute of Standards and Technology (NIST). An overview of the facility and results of the characterization measurements are presented. The results show that the facility is capable of measuring co...

The National Institute of Standards and Technology’s (NIST) Intelligent Systems Division (ISD) is a participant in the Defense Advanced Research Project Agency (DARPA) LAGR (Learning Applied to Ground Robots) Project. The NIST team’s objective for the LAGR Project is to insert learning algorithms into the modules that make up the 4D/RCS (Four Dimensional/Real-Time Control System), the standard ...

The NIST Construction Metrology and Automation Group, in cooperation with the NIST Intelligent Systems Division, is researching robotic structural steel placement as part of a project to develop an Automated Steel Construction Testbed. This project was initiated in response to industry requests for advanced tools and methodologies to speed the erection of steel structures while maintaining or e...

In 2012 NIST held the latest in an ongoing series of textindependent speaker recognition evaluations (SRE’s). The 2012 NIST Speaker Recognition Evaluation (SRE12) was the largest and most complex SRE to date, including over 100 million trials. Several aspects of SRE12 were new; most significantly, NIST released in advance of the evaluation target speaker training data from six preexisting corpo...

This article describes the ANSI/NIST-ITL standard: its origin, contents, and how it is used and updated. It is the principal standard used for the formatting and encoding of biometric data and related textual information for law enforcement, homeland security, and military applications throughout the world. The first version of the standard appeared in 1986, and it has been updated several time...

A total of fifteen laboratories participated in the CIE detector response in-tercomparison which was designed to assess the level of agreement among participating laboratories in the absolute measurement (with respect to SI) of photodetector response in the visible spectral region. Most participants were either commercial laboratories or university laboratories with the National Institute of St...

Introduction NIST�s Information Technology Laboratory has two ongoing research projects in computer forensics: the National Software Reference Library (NSRL) project and the Computer Forensics Tool Testing (CFTT) project. Funded through NIST�s Office of Law Enforcement Standards (OLES) by the National Institute of Justice (NIJ), the Federal Bureau of Investigation (FBI), the Department of Defen...