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Search Publications by: Maritoni Litorja (Fed)

Displaying 1 - 25 of 99

Maximum Luminous Intensity of LED-lighted X signs for Airport Runways

June 12, 2024

Author(s)

Yoshi Ohno, Maritoni Litorja, C Cameron Miller

This is a report for Inter-agency agreement 693KA9-18-N-00023 "Maximum Luminous Intensity for LED Signaling in an Airport Environment" by Federal Aviation Administration (FAA) and National Institute of Standards and Technology (NIST). The LED-based lighted

Spatial frequency domain Mueller matrix imaging

December 14, 2022

Author(s)

Joseph Chue-Sang, Maritoni Litorja, Aaron Goldfain, Thomas A. Germer

Significance: Mueller matrix polarimetry (MMP) and spatial frequency domain imaging (SFDI) are wide-field optical imaging modalities that differentiate tissue primarily by structure alignment and photon transport coefficient, respectively. Because these

Conversion of imager-specific response of tissue phantom fluorescence to SI traceable units

May 12, 2022

Author(s)

Maritoni Litorja

One function that tissue phantoms for fluorescence guided imaging (FGI) systems are fabricated for, is to track an imaging system's repeatability and reproducibility performance as a light detector. This can be made more universally useful if the optical

Linking mass measured by the quartz crystal microbalance to the SI

February 12, 2020

Author(s)

Corey A. Stambaugh, Hamza Shakeel, Maritoni A. Litorja, Joshua M. Pomeroy

The quartz crystal microbalance has been deployed across industry and academy for the monitoring of the film thickness during depositions. Over a half-a-century of academic and industrial research has gone into understanding the relation between film

Comparison of NIR versus SWIR fluorescence imaging of indocyanine green using SI-derived metrics of image performance

August 27, 2019

Author(s)

Banghe Zhu, Eva Sevick Muraca, Maritoni Litorja

Recently, fluorescence imaging using shortwave-wavelength infrared light (SWIR, 1,000-2,000 nm) has been proposed as having advantage over conventional near-infrared fluorescence (NIRF) imaging due to the reduced tissue scattering, negligible

Structured Illumination Mueller Matrix Imaging

May 16, 2019

Author(s)

Joseph P. Angelo, Thomas Germer, Maritoni Litorja

We perform Mueller matrix imaging (MMI) of diffusely scattering phantoms under sinusoidal irradiance of varying spatial frequency. Quantitative polarimetric sensing via MMI completely characterizes a sample's polarimetric properties, while structured

Evaluation of Lateral Resolution of Light Field Cameras

September 8, 2018

Author(s)

Sowon Joy Yoon, Peter Bajcsy, Maritoni A. Litorja, James J. Filliben

Light field cameras are an emerging imaging device for acquiring 3-D information of a scene by capturing a field of light rays traveling in space. As light field cameras become portable, hand- held, and affordable, their potential as a 3-D measurement

Evaluation of Lateral and Depth Resolutions of Light Field Cameras

August 1, 2018

Author(s)

Sowon Joy Yoon, Peter Bajcsy, Maritoni A. Litorja, James J. Filliben

In crime scene investigations, 3D forensic evidence such as tire tread and shoe imprints in substances like mud or snow can often provide useful information to identify suspects and victims. This work focuses on evaluating lateral and depth resolutions of

Lambertian nature of tissue phantoms for use as calibrators in near infrared fluorescence imaging

March 9, 2016

Author(s)

Maritoni Litorja, Simon Lorenzo, Banghe Zhu, Eva Sevick Muraca

The use of tissue phantoms as calibrators to transfer SI-referenced scale to an imager offers convenience, compared to other methods of calibration. The tissue phantoms are calibrated separately for radiance at emission wavelength per irradiance at

Determining the Performance of Fluorescence Molecular Imaging Devices Using Traceable Working Standards with SI Units of Radiance

March 1, 2016

Author(s)

Maritoni A. Litorja, Banghe Zhu, Eva Sevick Muraca, John Rasmussen

To date, no emerging preclinical or clinical near-infrared fluorescence (NIRF) imaging devices for non-invasive and/or surgical guidance have their performances validated on working standards with SI units of radiance that enable comparison or quantitative

Proceedings of SPIE

March 4, 2015

Author(s)

Maritoni A. Litorja, Aaron A. Urbas, Yuqin Zong

The fluorescent light detected by a clinical imager is assumed to be proportional to the amount of fluorescent substance present in the sample. Unfortunately, there are many factors that can add or subtract to the light signal directly attributable to the

Results of aperture area comparisons for exo-atmospheric total solar irradiance measurements

November 13, 2013

Author(s)

Bettye C. Johnson, Maritoni A. Litorja, Joel B. Fowler, Eric L. Shirley, James J. Butler, Robert A. Barnes

Exo-atmospheric solar irradiance measurements made by the solar irradiance community since 1978 incorporate limiting apertures with diameters measured by a number of metrology laboratories using a variety of techniques. Knowledge of the aperture area is a

Hyperspectral Image Segmentation of the Common Bile Duct

March 8, 2013

Author(s)

Daniel V. Samarov, Eleanor Wehner, Roderich E. Schwarz, Karel Zuzak, Edward Livingston, Maritoni A. Litorja

Over the course of the last several years hyperspectral imaging (HSI) has seen increased usage in biomedicine. Within the medical field in particular HSI has been recognized as having the potential to make an immediate impact by reducing the risks and