Image & signal processing

News and Updates

New Device Design Brings Unparalleled Confidence to Cell Measurements

July 20, 2022

Measuring the numbers and properties of cells moving in a stream — a process called flow cytometry — is critically important to diagnostic medicine

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

Projects and Programs

Quantitative, Traceable Determination of Cell Viability Using Absorbance Microscopy

Ongoing

Most cell-based protocols require knowledge of the number of live and dead cell populations. The current methods, however, lack traceability, which is

Optical and Optoelectronic Materials Characterization

Ongoing

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

Indoor Localization and Tracking

Completed

This web page is simply a pointer to another page that covers the extensive research program in indoor localization and tracking at NIST.

Sub-nanoscale electron microscopy of complex nanostructures

Ongoing

The aim of this project is to develop robust, quantitative measurement methods utilizing transmission electron microscopy methods for complex, nanostructured

Publications

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

Implementation of a Particle Tracking Method to Study Particle Spreading in Powder Bed Fusion Systems

February 8, 2024

Author(s)

Eric Whitenton, Alkan Donmez, Aniruddha Das, Vipin Tondare, Justin Whiting

Additive manufacturing is a rapidly growing and increasingly important set of manufacturing techniques. One of those techniques, powder bed fusion, is often

Reproducibility in Cytometry: Signals Analysis and its Connection to Uncertainty Quantification

December 22, 2023

Author(s)

Paul Patrone, Matthew DiSalvo, Anthony J. Kearsley, Geoffrey B. McFadden, Gregory A. Cooksey

A New Assessment of Convolutional Neural Networks for Texture Directionality Detection

December 1, 2023

Author(s)

Marcin Kociolek, Antonio Cardone

Image texture analysis is ubiquitous as it finds application in many scientific fields of interest, including biomedical and material science. The automated

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