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

The current gold standard for cell viability measurements is the trypan blue assay. Trypan blue dye enters dead cells that have a ruptured membrane. As a result, the dead cells are stained blue. Live cells with an intact membrane, on the other hand, do not absorb the dye molecules and remain

Optical and Optoelectronic Materials Characterization

Ongoing

Today's electronics have reached a point where sheer computation power has combined form and function as the key driver of large consumer markets. The demand for portable and pervasive electronics with greater functionality promises significant changes over the next decades in how society interacts

Indoor Localization and Tracking

Completed

Please see the page that describes NIST work in this area.

Quantum Bioimaging

Ongoing

Our efforts in BBD are focused on using the quantum nature of light to facilitate enhanced and novel measurement technologies for biological samples. For example, so-called bright squeezed laser sources enable imaging and sensing with less noise than is classically possible. Additionally, entangled

Publications

GPU-accelerated parallel image reconstruction strategies for magnetic particle imaging

June 24, 2024

Author(s)

Klaus Natorf Quelhas, Mark-Alexander Henn, Ricardo Farias, Weston L. Tew, Solomon I. Woods

Image reconstruction is a fundamental step in Magnetic Particle Imaging (MPI). Since it was developed, several methods have been studied to perform more

Explainable Classification Techniques for Quantum Dot Device Measurements

March 12, 2024

Author(s)

Daniel Schug, Tyler Kovach, Jared Benson, Mark Eriksson, Justyna Zwolak

In the physical sciences, there is an increased need for robust feature representations of image data: image acquisition, in the generalized sense of two

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

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