Using neutron tomographic imaging, we report for the first time three-dimensional spatial distribution of lithium products in electrochemically discharged lithium-air cathodes. Neutron imaging finds a nonuniform product across electrode thickness, with species concentration being higher near edges Li-air and relatively uniform center electrode. The experimental images were analyzed context results obtained from 3D modeling that maps spatiotemporal variation using kinetically coupled...

To investigate machine learning for linking image content, human perception, cognition, and error in the diagnostic interpretation of mammograms.Gaze data decisions were collected from three breast imaging radiologists radiology residents who reviewed 20 screening mammograms while wearing a head-mounted eye-tracker. Image analysis was performed mammographic regions that attracted radiologists' attention all abnormal regions. Machine algorithms investigated to develop predictive models link:...

The primary aim of the present study was to test feasibility predicting diagnostic errors in mammography by merging radiologists' gaze behavior and image characteristics. A secondary investigate group-based personalized predictive models for radiologists variable experience levels.The performed clinical task assessing likelihood malignancy mammographic masses. Eye-tracking data decisions 40 cases were acquired from four Radiology residents two breast imaging experts as part an IRB-approved...

Water retention curves are essential for understanding the hydrologic behavior of partially saturated porous media and modeling flow transport processes within vadose zone. We directly measured main drying wetting branches average water function obtained using two-dimensional neutron radiography. Flint sand columns were with then drained rewetted under quasi-equilibrium conditions a hanging column setup. Digital images (2048 by 2048 pixels) transmitted flux neutrons acquired at each imposed...

This article presents the initial results of 2-D and 3-D neutron imaging bronze artifacts using CG-1D prototype beamline at High Flux Isotope Reactor (HFIR) located Oak Ridge National Laboratory (ORNL). Neutron is a non-destructive technique capable producing unprecedented three-dimensional information on archaeomaterials, including qualitative, quantitative, visual data impurities, composition change, voids, structure macro-scale levels. The presented in this publication highlight how from...

Neutron imaging is presented as a tool for quantifying the diffusion of ions inside porous materials, such carbon electrodes used in desalination process via capacitive deionization and electrochemical energy-storage devices. Monolithic mesoporous ∼10 nm pore size were synthesized based on soft-template method. The with an aqueous solution gadolinium nitrate flow-through cell designed neutron studies. Sequences images obtained under various conditions applied potential between electrodes....

Ambient light in a scene can introduce errors into range data from most commercial three-dimensional scanners, particularly scanners that are based on projected patterns and structured lighting. We study the effects of ambient specific scanner. further present method for characterizing accuracy as function distortions. After brief review related research, we first describe capabilities scanner used define experimental setup our study. Then results characterization relative to light. In these...

The objective of this study was to investigate the association between gaze patterns and diagnostic performance radiologists for task assessing likelihood malignancy mammographic masses. Six (2 expert breast imagers 4 Radiology residents variable training) assessed 40 biopsy-proven masses (20 malignant 20 benign) on a computer monitor. Gaze data were collected using commercial remote eye tracker. Upon reviewing each mass, asked provide their assessment regarding probability depicted mass as...

Abstract High-temperature heat pipes are two-phase, capillary driven transfer devices capable of passively providing high thermal fluxes. Such a device using liquid-metal coolant can be used as solution for successful management on hypersonic flight vehicles. Imaging the inside will provide valuable information in characterizing detailed and mass transport. Neutron imaging possesses an inherent advantage from fact that neutrons penetrate pipe metal walls with very little attenuation, but...

Purpose Investigate the use of two imaging‐based methods – coded pattern projection and laser‐based triangulation to generate 3D models as input a rapid prototyping pipeline. Design/methodology/approach Discusses structured lighting technologies suitable methods. Two approaches, coded‐pattern triangulation, are specifically identified discussed in detail. commercial systems used experimental results. These include Genex Technologies FaceCam Integrated Vision Products Ranger System. Findings...

Supershape model is a recent primitive that represents numerous 3D shapes with several symmetry axes. The main interest of this its capability to reconstruct more complex shape than superquadric only one implicit equation. In paper we propose genetic algorithms point cloud using those primitives. We used the pseudo-Euclidean distance introduce threshold handle real data imperfection and speed up process. Simulations our proposed fitness functions function based on inside-outside show performs better.

The biological concept of bilateral symmetry as a marker developmental stability and good health is well established. Although most individuals deviate slightly from perfect symmetry, humans are essentially considered bilaterally symmetrical. Consequently, increased fluctuating asymmetry paired structures could be an indicator disease. There several published studies linking breast size with cancer risk. These were based on radiologists' manual measurements mammographic images. We aim to...

The characterization of commercial 3D scanners allows acquiring precise and useful data. accuracy range and, more recently, color for is usually studied separately, but when the scanner based on structured light with a coding pattern, influence should be investigated. product that we have tested has particularity it can acquire data under ambient instead controlled environment as most available scanners. Therefore, related work in literature experiments done variety standard illuminants,...

Eye tracking studies in medical imaging typically focus on studying radiologists' visual search process and how it relates to the clinical interpretation task at hand. In this pilot study, we have investigated gaze patterns gain insight into their association with expertise level as well presence of individual differences facilitate personalized modeling recognition radiologists. First, collected data from six radiologists viewing 40 mammographic images each. Then, were analyzed two...

Photogallery Entry 3

Multispectral imaging sensors typically have wavelength-dependent resolution, which reduces the ability to distinguish small features in some spectral bands. Existing super-resolution methods upsample a multispectral image (MSI) achieve common resolution across all bands but are sensor-specific, computationally expensive, and may assume invariant statistics multiple length scales. In this paper, we introduce ResSR, an efficient modular residual-based method for super-resolving...

Extracting well distributed control points (CPs) is a very challenging task for remote sensing image registration, particularly large high-resolution images over heterogeneous landscape. Based on analysis such as edge detection, corner and information theory, new CP detection approach proposed to select high- quality, evenly CPs. The Entropy-Block-Based variant of the Harris Corner Detector (EBB-HCD) achieved by dividing into blocks allocating number CP's based upon entropy each block. While...

The purpose of this research is to investigate imaging-based methods reconstruct 3D CAD models real-world objects. methodology uses structured lighting technologies such as coded-pattern projection and laser-based triangulation sample points on the surfaces objects then these from dense point samples. This reverse engineering (RE) presents reconstruction results for a military tire that important tire-soil simulations. limitations approach are current level accuracy systems offer relative...

Photo Gallery Neutron Tomography of Lithium (Li) Menisci Inside a Molybdenum (Mo) Heat Pipe Kirchoff E., E. Search for other works by this author on: This Site PubMed Google Scholar Kihm K. D., D. Rosenfeld J., J. Rawal S., S. Bilheux H., H. Walker L., L. Voisin Pratt Swanson A. Author and Article Information Transfer. Aug 2013, 135(8): 080902 (1 pages) Paper No: HT-13-1128 https://doi.org/10.1115/1.4024184 Published Online: July 18, 2013 history Received: March 12, Revision