Image & signal processing

News and Updates

Human figure stands facing large wooden board. Behind that is a row of tubes sticking up from a base.

NIST Method Uses Radio Signals to Image Hidden and Speeding Objects

June 25, 2021

Researchers at the National Institute of Standards and Technology (NIST) and Wavsens LLC have developed a method for using radio signals to create real-time

Escape From Flatland: Calibration Method Enables Microscopes to Make Accurate Measurements in All 3 Dimensions

June 24, 2021

Conventional microscopes provide essential information about samples in two dimensions — the plane of the microscope slide. But flat is not all that. In many

Four sets of black, chunky circular shapes with center markings on a white background.

Recovering Data: NIST’s Neural Network Model Finds Small Objects in Dense Images

August 4, 2020

In efforts to automatically capture important data from scientific papers, computer scientists at the National Institute of Standards and Technology (NIST) have

Projects and Programs

Optical and Optoelectronic Materials Characterization

This project aims to develop rigorous measurements and methodology needed for determining optical and electrical properties of advanced materials that might be

Metrics for Manipulation and Enhancements of Forensic Images

Latent fingerprints are, by definition, left unintentionally and are obtained using diverse physical and chemical techniques. It follows that the initial

Additive Manufacturing Part Qualification

Critical parts for defense, aerospace, and medical applications must be formally qualified prior to use. Currently, extensive empirical testing consisting of

AM Machine and Process Control Methods for Additive Manufacturing

Part quality in additive manufacturing (AM) is highly dependent on the process control, but there is a lack of adequate AM control methods and standards. In

Publications

NIST 2021 Speaker Recognition Evaluation Plan

July 12, 2021

Author(s)

Omid Sadjadi, Craig Greenberg, Elliot Singer, Lisa Mason, Douglas Reynolds

The 2021 Speaker Recognition Evaluation (SRE21) is the next in an ongoing series of speaker recognition evaluations conducted by the US National Institute of

Accurate localization microscopy by intrinsic aberration calibration

June 24, 2021

Author(s)

Craig Copeland, Craig McGray, Robert Ilic, Jon Geist, Samuel Stavis

A standard paradigm of localization microscopy involves extension from two to three dimensions by engineering information into emitter images, and approximation

Fearless Steps Challenge Phase-3 (FSC P3): Advancing SLT for Unseen Channel and Mission Data across NASA Apollo Audio

June 14, 2021

Author(s)

Aditya Joglekar, Omid Sadjadi, Meena Chandra-Shekar, Christopher Cieri, John Hansen

The Fearless Steps Challenge (FSC) initiative was designed to host a series of progressively complex tasks to promote advanced speech research across

Real-time and high-throughput Raman signal extraction and processing in CARS hyperspectral imaging

June 9, 2021

Author(s)

Charles Camp, John S. Bender, Young Lee

We present a new collection of processing techniques, collectively "factorized Kramers-Kroenig and error correction" (fKK-EC), for (a) Raman signal extraction,

Software

Custom Lifetime Imaging Platform (CLIP)

CLIP is an analysis program for fluorescence lifetime images. It provides the user with the ability to fit or calculate the phasor plots for lifetime decays

Tools and Instruments

Large Aperture Scanner

The Large Aperture Scanner (LAS) scans a radar transceiver over a 5 meter by 20 meter aperture. Image reconstruction techniques enable a three-dimensional