Further development and testing of TCal: a mobile spectrophotometric calibration unit for astronomical imaging systems

2020 ◽  
Author(s):  
Peter S. Ferguson ◽  
Leonardo Barba ◽  
Darren L. DePoy ◽  
Luke M. Schmidt ◽  
Jennifer L. Marshall ◽  
...  
Keyword(s):  
Imaging Systems ◽  
Astronomical Imaging ◽  
Calibration Unit ◽  
Further Development

Development of TCal: a mobile spectrophotometric calibration unit for astronomical imaging systems

2018 ◽  
Author(s):  
Luke M. Schmidt ◽  
Peter Ferguson ◽  
Darren L. DePoy ◽  
Jennifer L. Marshall ◽  
Travis Prochaska ◽  
...  
Keyword(s):  
Imaging Systems ◽  
Astronomical Imaging ◽  
Calibration Unit

The Surgical Workstation: Surgical Planning Using Generic Software

1993 ◽  
Vol 109 (3) ◽  
pp. 434-440 ◽  
Author(s):  
David A. Wiegand ◽  
Robert B. Page ◽  
David S. Channin
Keyword(s):  
Medical Image ◽  
Surgical Planning ◽  
Medical Image Analysis ◽  
Three Dimensional ◽  
Computer Software ◽  
Medical Image Processing ◽  
Imaging Systems ◽  
Computed Tomography Scans ◽  
Further Development ◽  
Head Neck

Computer software for rendering and display of three-dimensional data is becoming readily available for all types of computers. Such programs typically accept data from any source, compute a three-dimensional volume of data, and display it with a variety of rendering options. Although not specifically designed for medical image processing, these programs can provide very detailed and finely rendered images that are useful for surgical planning. We use one such program to display data from standard computed tomography scans, which gives us a photorealistic three-dimensional view of patient anatomy. This view can be modified to render tissues transparent, translucent, or opaque, and thus allows the surgeon to selectively enhance bony architecture, tumors, or other details. Images can be rotated, sliced, and displayed in the surgical position. Image animation can be added to facilitate the display of complex anatomic relationships. Our experience with this technology suggests that such programs can provide the basis for personal surgical workstations for medical image analysis and surgical planning. Further development of such generic imaging systems should allow this useful technology to become widely available for surgical planning and education. We discuss our experience with a typical generic imaging workstation. (OTOLARYNGOL HEAD NECK SURG 1993;109:434-40.)

Analysis of images obtained from space-variant astronomical imaging systems

2013 ◽  
Author(s):  
Elena Anisimova ◽  
Karel Fliegel ◽  
Martin Blažek ◽  
Petr Janout ◽  
Jan Bednář ◽  
...  
Keyword(s):  
Imaging Systems ◽  
Astronomical Imaging ◽  
Space Variant

Modulation patterns of astronomical imaging systems based on rotating grids

1985 ◽  
Vol 113 (2) ◽  
pp. 233-247 ◽  
Author(s):  
V. Dadurkevičius ◽  
D. A. Ralys
Keyword(s):  
Imaging Systems ◽  
Astronomical Imaging

A review of some current research on pressure sensitive paint and thermographic phosphor techniques

2007 ◽  
Vol 111 (1122) ◽  
pp. 495-508 ◽  
Author(s):  
K. Kontis
Keyword(s):  
Imaging Systems ◽  
Measurement Technology ◽  
Pressure Sensitive Paint ◽  
Fundamental Theory ◽  
Basic Principles ◽  
Pressure Sensitive ◽  
Thermographic Phosphor ◽  
The University ◽  
University Of Manchester ◽  
Further Development

Abstract The paper discusses the development and application activities within the Aero-Physics and Measurement Technology Laboratory at the University of Manchester on pressure sensitive paint and thermographic phosphor optical imaging systems for gas dynamic applications. It provides a brief review of the basic principles, fundamental theory, properties, chemical characteristics and bonding technologies associated with the two systems. A number of case studies are presented, which exhibit the range of applicability, limitations and potential for further development of the technologies.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Digital imaging and quantitative image analysis of polymer blends

1996 ◽  
Vol 54 ◽  
pp. 170-171
Author(s):  
Xiao Zhang
Keyword(s):  
Digital Imaging ◽  
Imaging Techniques ◽  
Imaging Systems ◽  
Polymer Science ◽  
Key Factors ◽  
Multiple Imaging ◽  
Quantitative Image ◽  
Digital Imaging Systems ◽  
Multi Phase ◽  
Network Technologies

Polymer microscopy involves multiple imaging techniques. Speed, simplicity, and productivity are key factors in running an industrial polymer microscopy lab. In polymer science, the morphology of a multi-phase blend is often the link between process and properties. The extent to which the researcher can quantify the morphology determines the strength of the link. To aid the polymer microscopist in these tasks, digital imaging systems are becoming more prevalent. Advances in computers, digital imaging hardware and software, and network technologies have made it possible to implement digital imaging systems in industrial microscopy labs.

The stability of dislocation networks under various oxygen-doping conditions in superconducting Bi2Sr2CaCu2Oy single crystals and their influence on the flux pinning properties

1994 ◽  
Vol 52 ◽  
pp. 802-803
Author(s):  
Y. Feng ◽  
X. Y. Cai ◽  
R. J. Kelley ◽  
D. C. Larbalestier
Keyword(s):  
Single Crystals ◽  
Oxygen Content ◽  
Basal Plane ◽  
Flux Pinning ◽  
Pinning Centers ◽  
Before And After ◽  
Anomalous Peak ◽  
Basal Plane Dislocation ◽  
The Stability ◽  
Further Development

The issue of strong flux pinning is crucial to the further development of high critical current density Bi-Sr-Ca-Cu-O (BSCCO) superconductors in conductor-like applications, yet the pinning mechanisms are still much debated. Anomalous peaks in the M-H (magnetization vs. magnetic field) loops are commonly observed in Bi2Sr2CaCu2Oy (Bi-2212) single crystals. Oxygen vacancies may be effective flux pinning centers in BSCCO, as has been found in YBCO. However, it has also been proposed that basal-plane dislocation networks also act as effective pinning centers. Yang et al. proposed that the characteristic scale of the basal-plane dislocation networksmay strongly depend on oxygen content and the anomalous peak in the M-H loop at ˜20-30K may be due tothe flux pinning of decoupled two-dimensional pancake vortices by the dislocation networks. In light of this, we have performed an insitu observation on the dislocation networks precisely at the same region before and after annealing in air, vacuumand oxygen, in order to verify whether the dislocation networks change with varying oxygen content Inall cases, we have not found any noticeable changes in dislocation structure, regardless of the drastic changes in Tc and the anomalous magnetization. Therefore, it does not appear that the anomalous peak in the M-H loops is controlled by the basal-plane dislocation networks.

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