scholarly journals Study of the Usefulness of the Constancy Tests in X-rays Image Processing Device by User

2019 ◽  
Vol 75 (4) ◽  
pp. 322-330
Author(s):  
Nobuhiro Tanaka
Author(s):  
Y. Kokubo ◽  
W. H. Hardy ◽  
J. Dance ◽  
K. Jones

A color coded digital image processing is accomplished by using JEM100CX TEM SCAN and ORTEC’s LSI-11 computer based multi-channel analyzer (EEDS-II-System III) for image analysis and display. Color coding of the recorded image enables enhanced visualization of the image using mathematical techniques such as compression, gray scale expansion, gamma-processing, filtering, etc., without subjecting the sample to further electron beam irradiation once images have been stored in the memory.The powerful combination between a scanning electron microscope and computer is starting to be widely used 1) - 4) for the purpose of image processing and particle analysis. Especially, in scanning electron microscopy it is possible to get all information resulting from the interactions between the electron beam and specimen materials, by using different detectors for signals such as secondary electron, backscattered electrons, elastic scattered electrons, inelastic scattered electrons, un-scattered electrons, X-rays, etc., each of which contains specific information arising from their physical origin, study of a wide range of effects becomes possible.


Author(s):  
S. Muramatsu ◽  
Y. Otsuka ◽  
H. Takenaga ◽  
Y. Kobayashi ◽  
I. Furusawa ◽  
...  

1992 ◽  
Vol 28 (3) ◽  
pp. 607-612 ◽  
Author(s):  
K. Ohshima ◽  
M. Yamamoto ◽  
T. Tanii ◽  
S. Yamane

1994 ◽  
Vol 367 ◽  
Author(s):  
Eric Clement ◽  
Jean Rajchenbach ◽  
Jacques Duran

AbstractWe report experimental measurements on mixing properties in bidimensional rotating drum. Using an image processing device, we follow the trajectories of tracer particles in a monodisperse assembly of beads. Tracer particles with different size ratios exhibit a violent segregation effect: a smaller particle has a tendency to stay in the centre and a larger one will rather dwell on the edges. Furthermore, for a tracer of identical size, we evidence a specific dispersion property where the centre and the edges are competing attractors of the mixing dynamics.


2016 ◽  
Vol 64 (4) ◽  
pp. 484-489
Author(s):  
Gustavo Barbalho Guedes EMILIANO ◽  
Fernando Souza MARINHO ◽  
Rogério Nogueira de OLIVEIRA

ABSTRACT Periapical X-rays are the most common complementary tests in the dental clinic. The indication of image tests in forensic identification depends on the produced X-rays quality. The image processing of conventional radiographs can improve image quality. This study aimed to report the potential contribution of image processing from radiographic films by digitally edited periapical radiographs for case reporting of positive identification. The results of anthropological examinations and dental arches of the victim matched the information transferred by the family of the missing person. The antemortem and postmortem periapical radiographs were digitized on photo scanner (Hewlett-Packard Development Company, HP ScanJet G4050 Photo, United States) and images were processed in Corel PaintShop Pro X4 editing software (Corel Corporation, v14, Canada). The comparison of antemortem and postmortem periapical radiographs digital images allowed to determine 8 concordant points in the contour and delimit the maxillary sinus as well as periodontal and dental structures of the tooth 17. Identification of the individual was possible by digital editing of radiographs in computer software. Editing allowed adjusting image brightness, contrast and sharpness, color temperature and saturation of tooth-jaw structures. Such technological feature effectively contributed to positive identification performed by Forensic Dentistry.


1988 ◽  
Vol 56 (5) ◽  
pp. 475-477 ◽  
Author(s):  
Achim M. Loske ◽  
Victor M. Castaño ◽  
Alfredo Gómez

2006 ◽  
Vol 46 (11) ◽  
pp. 1674-1678
Author(s):  
Maria Ismenia Sodero Toledo Faria ◽  
Fernando Cosme Rizzo Assunçao ◽  
Sidnei Paciornik ◽  
T. Wroblewski

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