Results 31 to 40 of about 115 (69)

Application of a multiscale maximum entropy image restoration algorithm to HXMT observations

open access: yes, 2016
This paper introduces a multiscale maximum entropy (MSME) algorithm for image restoration of the Hard X-ray Modulation Telescope (HXMT), which is a collimated scan X-ray satellite mainly devoted to a sensitive all-sky survey and pointed observation in 1 ...
Guan, Ju, Huo, Zhuo-Xi, Song, Li-Ming
core   +1 more source

Bildsegmentation zur Untersuchung von Streulichtbildern bei der laseroptischen Diagnose von rheumatoider Arthritis [PDF]

open access: yes, 2007
Optical imaging in biomedicine is governed by the light absorption and scattering interaction on microscopic and macroscopic constituents in the medium.
Beuthan, J.   +5 more
core   +1 more source

Edge and corner identification for tracking the line of sight

open access: yesIngeniería y Ciencia, 2005
Este artículo presenta un detector de aristas y esquinas, implementado en el dominio del proyecto GEIST (un Sistema de Información Turística Asistido por Computador) para extraer la información de aristas rectas y sus intersecciones (esquinas en la ...
María S Orozco   +2 more
doaj  

Uniqueness transition in noisy phase retrieval

open access: yes, 2010
Previous criteria for the feasibility of reconstructing phase information from intensity measurements, both in x-ray crystallography and more recently in coherent x-ray imaging, have been based on the Maxwell constraint counting principle.
Eisebitt, Stefan, Elser, Veit
core   +1 more source

The non-destructive study of museums objects by means of neutrons imaging methods and results of investigations [PDF]

open access: yes, 2007
Based on experience from many kinds of investigations with neutron imaging methods (radiography, tomography, time-dependent studies) and in comparison to conventional X-ray methods, the authors discuss the potential of future improved studies for ...
Frei, G., Lehmann, E. H., Vontobel, P.
core   +1 more source

Experience With Bayesian Image Based Surface Modeling [PDF]

open access: yes, 2005
Bayesian surface modeling from images requires modeling both the surface and the image generation process, in order to optimize the models by comparing actual and generated images.
Stutz, John C.
core   +1 more source

Loop-corrected belief propagation for lattice spin models

open access: yes, 2015
Belief propagation (BP) is a message-passing method for solving probabilistic graphical models. It is very successful in treating disordered models (such as spin glasses) on random graphs.
Zheng, Wei-Mou, Zhou, Hai-Jun
core   +1 more source

Accurate particle position measurement from images

open access: yes, 2011
The moment method is an image analysis technique for sub-pixel estimation of particle positions. The total error in the calculated particle position includes effects of pixel locking and random noise in each pixel.
Feng, Yan, Goree, J., Liu, Bin
core   +1 more source

Confocal microscopy of colloidal particles: towards reliable, optimum coordinates

open access: yes, 2007
Over the last decade, the light microscope has become increasingly useful as a quantitative tool for studying colloidal systems. The ability to obtain particle coordinates in bulk samples from micrographs is particularly appealing.
Ares   +90 more
core   +1 more source

Implementation of automated 3D defect detection for low signal-to noise features in NDE data [PDF]

open access: yes, 2014
The need for robust defect detection in NDE applications requires the identification of subtle, low-contrast changes in measurement signals usually in very noisy data.
Grandin, Robert   +2 more
core   +4 more sources

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