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Journal of Imaging, Volume 5, Issue 2

February 2019 - 10 articles

Cover Story: A dusty plasma is formed by injecting micrometer-sized “dust” particles into a gaseous discharge of electrons, ions, and neutral particles. These dust particles typically acquire a high negative charge and form a massive plasma component that gives rise to many interesting novel structural and dynamical phenomena. A three-dimensional measurement of the microparticle motion is possible on the kinetic level of individual particles by stereoscopic imaging. Here, we checked different algorithms to reconstruct the three-dimensional particle trajectories. The algorithms were tested for artificial dust systems with respect to particle density, total particle number, and camera orientations. Finally, they were applied to real volumetric data measured on parabolic flights. Their performance in reconstructing particle trajectories in such dense dust clouds was analyzed. These trajectories will be used to reveal the underlying particle dynamics in further studies.
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Articles (10)

  • Review
  • Open Access
9 Citations
7,976 Views
22 Pages

Algorithms for Particle Detection in Complex Plasmas

  • Daniel P. Mohr,
  • Christina A. Knapek,
  • Peter Huber and
  • Erich Zaehringer

21 February 2019

In complex plasmas, the behavior of freely floating micrometer sized particles is studied. The particles can be directly visualized and recorded by digital video cameras. To analyze the dynamics of single particles, reliable algorithms are required t...

  • Article
  • Open Access
4 Citations
6,843 Views
20 Pages

21 February 2019

Solid-state lamps including Organic Light Emitting Diode (OLED) lighting could facilitate a wide variety of lighting conditions by controlling the spectral power distribution and the spatial distribution of the light source. The appearance of the sur...

  • Article
  • Open Access
6 Citations
7,044 Views
11 Pages

In-Situ Imaging of Molten High-Entropy Alloys Using Cold Neutrons

  • Nicholas Derimow,
  • Louis J. Santodonato,
  • Benjamin E. MacDonald,
  • Bryan Le,
  • Enrique J. Lavernia and
  • Reza Abbaschian

16 February 2019

Real-time neutron imaging was utilized to produce a movie-like series of radiographs for in-situ observation of the remixing of liquid state immiscibility that occurs in equiatomic CoCrCu with the addition of Ni. A previous neutron imaging study demo...

  • Article
  • Open Access
9 Citations
6,444 Views
15 Pages

13 February 2019

In dusty plasmas, determining the three-dimensional particle positions and trajectories of individual particles is often required. This paper benchmarks two approaches capable of reconstructing the trajectories of particles in three dimensions. The i...

  • Article
  • Open Access
15 Citations
6,521 Views
17 Pages

8 February 2019

Inverse scattering problems (ISPs) stand at the center of many important imaging applications, such as geophysical explorations, industrial non-destructive testing, bio-medical imaging, etc. Recently, a new type of contraction integral equation for i...

  • Article
  • Open Access
58 Citations
8,895 Views
16 Pages

2 February 2019

Analysis of retinal fundus images is essential for eye-care physicians in the diagnosis, care and treatment of patients. Accurate fundus and/or retinal vessel maps give rise to longitudinal studies able to utilize multimedia image registration and di...

  • Article
  • Open Access
30 Citations
7,974 Views
19 Pages

1 February 2019

Breast density is considered to be one of the major risk factors in developing breast cancer. High breast density can also affect the accuracy of mammographic abnormality detection due to the breast tissue characteristics and patterns. We reviewed va...

  • Article
  • Open Access
9 Citations
6,741 Views
19 Pages

Developments in Electrical-Property Tomography Based on the Contrast-Source Inversion Method

  • Reijer Leijsen,
  • Patrick Fuchs,
  • Wyger Brink,
  • Andrew Webb and
  • Rob Remis

1 February 2019

The main objective of electrical-property tomography (EPT) is to retrieve dielectric tissue parameters from B ^ 1 + data as measured by a magnetic-resonance (MR) scanner. This is a so-called hybrid inverse problem in which data are defined...

  • Article
  • Open Access
6 Citations
6,234 Views
9 Pages

Origami Lesion-Targeting Device for CT-Guided Interventions

  • Austin J. Taylor,
  • Sheng Xu,
  • Bradford J. Wood and
  • Zion Tsz Ho Tse

23 January 2019

The objective of this study is to preliminarily evaluate a lesion-targeting device for CT-guided interventions. The device is created by laser cutting the structure from a sheet of medical grade paperboard, 3D printing two radiocontrast agent grids o...

  • Article
  • Open Access
12 Citations
6,476 Views
13 Pages

Understanding Vasomotion of Lung Microcirculation by In Vivo Imaging

  • Enrico Mazzuca,
  • Andrea Aliverti and
  • Giuseppe Miserocchi

22 January 2019

The balance of lung extravascular water depends upon the control of blood flow in the alveolar distribution vessels that feed downstream two districts placed in parallel, the corner vessels and the alveolar septal network. The occurrence of an edemag...

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J. Imaging - ISSN 2313-433X