scholarly journals A New Acquisition and Imaging System for Environmental Measurements: An Experience on the Italian Cultural Heritage

Sensors ◽  
2014 ◽  
Vol 14 (5) ◽  
pp. 9290-9312 ◽  
Author(s):  
Fabio Leccese ◽  
Marco Cagnetti ◽  
Andrea Calogero ◽  
Daniele Trinca ◽  
Stefano Pasquale ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
Imaging System

scholarly journals Time-domain imaging system in the terahertz range for immovable cultural heritage materials

Strain ◽  
2018 ◽  
Vol 55 (2) ◽  
pp. e12292
Author(s):  
David Giovannacci ◽  
Hoi Ching Cheung ◽  
Gillian C. Walker ◽  
John W. Bowen ◽  
Dominique Martos-Levif ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
Time Domain ◽  
Imaging System ◽  
Terahertz Range

X-ray fluorescence imaging system for fast mapping of pigment distributions in cultural heritage paintings

2013 ◽  
Vol 8 (10) ◽  
pp. P10011-P10011 ◽  
Author(s):  
A Zielińska ◽  
W Dąbrowski ◽  
T Fiutowski ◽  
B Mindur ◽  
P Wiącek ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
Fluorescence Imaging ◽  
Imaging System ◽  
Fast Mapping ◽  
X Ray ◽  
Fluorescence Imaging System

IRIS: a novel spectral imaging system for the analysis of cultural heritage objects

2011 ◽  
Author(s):  
V. M. Papadakis ◽  
Y. Orphanos ◽  
S. Kogou ◽  
K. Melessanaki ◽  
P. Pouli ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
Imaging System ◽  
Spectral Imaging ◽  
Cultural Heritage Objects

scholarly journals Hyper-Spectral Imaging Technique in the Cultural Heritage Field: New Possible Scenarios

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2843 ◽  
Author(s):  
Marcello Picollo ◽  
Costanza Cucci ◽  
Andrea Casini ◽  
Lorenzo Stefani
Keyword(s):  
Cultural Heritage ◽  
Hyperspectral Imaging ◽  
Imaging System ◽  
Imaging Techniques ◽  
Imaging Spectroscopy ◽  
Spectral Imaging ◽  
Imaging Data ◽  
Spectroscopic Information ◽  
Hyper Spectral Imaging ◽  
Recent Developments

Imaging spectroscopy technique was introduced in the cultural heritage field in the 1990s, when a multi-spectral imaging system based on a Vidicon camera was used to identify and map pigments in paintings. Since then, with continuous improvements in imaging technology, the quality of spectroscopic information in the acquired imaging data has greatly increased. Moreover, with the progressive transition from multispectral to hyperspectral imaging techniques, numerous new applicative perspectives have become possible, ranging from non-invasive monitoring to high-quality documentation, such as mapping and characterization of polychrome and multi-material surfaces of cultural properties. This article provides a brief overview of recent developments in the rapidly evolving applications of hyperspectral imaging in this field. The fundamentals of the various strategies, that have been developed for applying this technique to different types of artworks are discussed, together with some examples of recent applications.

scholarly journals 3D Thermal Imaging System with Decoupled Acquisition for Industrial and Cultural Heritage Applications

2020 ◽  
Vol 10 (3) ◽  
pp. 828 ◽  
Author(s):  
Ivo Campione ◽  
Francesca Lucchi ◽  
Nicola Santopuoli ◽  
Leonardo Seccia
Keyword(s):  
Cultural Heritage ◽  
Spatial Data ◽  
Imaging System ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Large Set ◽  
Marble Statue ◽  
Geometrical Data ◽  
3D Printed ◽  
Thermal Imaging System

Three-dimensional thermography is a recent technique—with various fields of application—that consists of combining thermography with 3D spatial data in order to obtain 3D thermograms, high information objects that allow one to overcome some limitations of 2D thermograms, to enhance the thermal monitoring and the detection of abnormalities. In this paper we present an integration methodology that can be applied to merge data acquired from a generic thermal camera and a generic laser scanner, and has the peculiarity of keeping the two devices completely decoupled and independent, so that thermal and geometrical data can be acquired at different times and no rigid link is needed between the two devices. In this way, the stand-alone capability of each device is not affected, and the data fusion is applied only when necessary. In the second part, the real effectiveness of our approach is tested on a 3D-printed object properly designed. Furthermore, one example of an application of our methodology in the cultural heritage field is presented, with an eye to preservation and restoration: the integration is applied to a marble statue called Madonna with the Child, a fine work of the Florentine sculptor Agostino di Duccio (1418–1481). The results suggest that the method can be successfully applicable to a large set of scenarios. However, additional tests are needed to improve the robustness.

New Aspects in the Design of Electron Optical Magnification Systems

1972 ◽  
Vol 30 ◽  
pp. 606-607
Author(s):  
Willem H.J. Andersen
Keyword(s):  
Electron Microscope ◽  
Imaging System ◽  
Chromatic Aberration ◽  
Research Tool ◽  
Energy Losses ◽  
Objective Lens ◽  
Theoretical Limit ◽  
Optical Magnification ◽  
Chromatic Aberrations ◽  
High Degree

Electron microscope design, and particularly the design of the imaging system, has reached a high degree of perfection. Present objective lenses perform up to their theoretical limit, while the whole imaging system, consisting of three or four lenses, provides very wide ranges of magnification and diffraction camera length with virtually no distortion of the image. Evolution of the electron microscope in to a routine research tool in which objects of steadily increasing thickness are investigated, has made it necessary for the designer to pay special attention to the chromatic aberrations of the magnification system (as distinct from the chromatic aberration of the objective lens). These chromatic aberrations cause edge un-sharpness of the image due to electrons which have suffered energy losses in the object.There exist two kinds of chromatic aberration of the magnification system; the chromatic change of magnification, characterized by the coefficient Cm, and the chromatic change of rotation given by Cp.

Some Quantification Problems in Parallel EELS Images

1990 ◽  
Vol 48 (2) ◽  
pp. 36-37
Author(s):  
G. Botton ◽  
G. L’Espérance ◽  
M.D. Ball ◽  
C.E. Gallerneault
Keyword(s):  
Electron Microscope ◽  
Imaging System ◽  
Signal To Noise Ratio ◽  
Scanning Transmission Electron Microscope ◽  
Acquisition Time ◽  
Thickness Variation ◽  
Transmission Electron ◽  
Distribution Of Elements ◽  
Scanning Transmission ◽  
Present Distribution

The recently developed parallel electron energy loss spectrometers (PEELS) have led to a significant reduction in spectrum acquisition time making EELS more useful in many applications in material science. Dwell times as short as 50 msec per spectrum with a PEELS coupled to a scanning transmission electron microscope (STEM), can make quantitative EEL images accessible. These images would present distribution of elements with the high spatial resolution inherent to EELS. The aim of this paper is to briefly investigate the effect of acquisition time per pixel on the signal to noise ratio (SNR), the effect of thickness variation and crystallography and finally the energy stability of spectra when acquired in the scanning mode during long periods of time.The configuration of the imaging system is the following: a Gatan PEELS is coupled to a CM30 (TEM/STEM) electron microscope, the control of the spectrometer and microscope is performed through a LINK AN10-85S MCA which is interfaced to a IBM RT 125 (running under AIX) via a DR11W line.

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