AOTF-based optical system of a microscope module for multispectral imaging techniques

2017 ◽  
Author(s):  
Olga V. Polschikova ◽  
Alexander Machikhin ◽  
Vladislav Batshev ◽  
Alina Ramazanova ◽  
Artyom Belov ◽  
...  
Keyword(s):  
Optical System ◽  
Multispectral Imaging ◽  
Imaging Techniques

scholarly journals Digital Archiving of Civil War Graffiti for Research & Access

2021 ◽  
Vol 2021 (1) ◽  
pp. 107-112
Author(s):  
Andrea J. Loewenwarter ◽  
Margaret L. Misch ◽  
Kristin Jacobsen ◽  
Mills Kelly ◽  
Michael B. Toth
Keyword(s):  
Civil War ◽  
Multispectral Imaging ◽  
New Technologies ◽  
Imaging Techniques ◽  
Image Data ◽  
Imaging Systems ◽  
Advanced Imaging ◽  
Data Archiving ◽  
Technical Systems ◽  
Civil War Era

Historic properties face challenges preserving and maintaining their physical heritage, as well as digitally sharing and accessing their history in a virtual environment. They are now utilizing new advanced imaging methods to research their cultural heritage artifacts. Recent advanced imaging in historic Civil War-era houses demonstrated the integration of imaging techniques and data to support conservation of these structures and research into their history and contents. New technical systems, including the latest narrowband multispectral imaging systems and higher resolution cameras, raise major challenges in not only the integration of new technologies, but also the ability to store, manage and access large amounts of data. Integration, preservation, access and collaboration with the image data from this program requires implementation of standardized digitization and data archiving practices.

scholarly journals Development and Experimental Study of Phantoms for Mapping Skin Chromophores

2014 ◽  
Vol 51 (3) ◽  
pp. 58-66 ◽  
Author(s):  
A. Silapetere ◽  
J. Spigulis ◽  
I. Saknite
Keyword(s):  
Experimental Study ◽  
Spectral Analysis ◽  
Blood Cells ◽  
Multispectral Imaging ◽  
Imaging System ◽  
Imaging Techniques ◽  
Cambridge Research ◽  
Dermal Cell ◽  
Computer Aided ◽  
Diagnostic Imaging Techniques

Abstract Skin chromophore phantoms are widely used for better understanding of the light interaction with tissue and for calibration of skin diagnostic imaging techniques. In this work, different phantoms were examined and compared in order to find biologically equivalent substances that are the most promising for this purpose. For mimicking the skin medium and layered structure, a fibrin matrix with epidermal and dermal cell inclusion was used. Synthesized bilirubin, red blood cells and nigrosin were taken as absorbers. For spectral analysis of the developed phantoms a computer-aided multispectral imaging system Nuance 2.4 (Cambridge Research & Instrumentation, Inc., USA) was used. In this study, skin phantoms were created using such substances as bilirubin, melanin, haemoglobin and nigrosin

scholarly journals Reduction in Edge-Ringing in Aberrated Images of Coherent Edge Objects by Multishaded Aperture

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Venkanna Mekala ◽  
Karuna Sagar Dasari
Keyword(s):  
Optical System ◽  
Intensity Distribution ◽  
Imaging Techniques ◽  
Straight Edge ◽  
Circular Aperture ◽  
Coherent Imaging ◽  
Image Intensity ◽  
Coherent Illumination

The images of a straight edge in coherent illumination produced by an optical system with circular aperture and apodized with multiple filters have been studied. The most common problem encountered in the coherent-imaging techniques is the edge-ringing. To minimize the edge-ringing, multishaded aperture method has been proposed. Image intensity distribution curves are drawn and edge-ringing values are evaluated. The results are compared to that of the airy case with the use of single, double and triple filtering.

scholarly journals Imaging Techniques for Clinical Burn Assessment with a Focus on Multispectral Imaging

2016 ◽  
Vol 5 (8) ◽  
pp. 360-378 ◽  
Author(s):  
Jeffrey E. Thatcher ◽  
John J. Squiers ◽  
Stephen C. Kanick ◽  
Darlene R. King ◽  
Yang Lu ◽  
...  
Keyword(s):  
Multispectral Imaging ◽  
Imaging Techniques

Study pollen grains in rice by using multispectral imaging techniques

2005 ◽  
Author(s):  
Qiongshui Wu ◽  
Yaojun Hu ◽  
Hengyu Ke ◽  
Libo Zeng ◽  
Yi Ding
Keyword(s):  
Multispectral Imaging ◽  
Imaging Techniques ◽  
Pollen Grains

scholarly journals Multispectral Imaging and p-XRF for the Non-Invasive Characterization of the Anonymous Devotional Painting ‘Maria Santissima delle Grazie’ from Mirabella Imbáccari (Sicily, Italy)

Heritage ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 2320-2336
Author(s):  
Antonella Privitera ◽  
Maria Francesca Alberghina ◽  
Elèna Privitera ◽  
Salvatore Schiavone
Keyword(s):  
Multispectral Imaging ◽  
Chemical Elements ◽  
Imaging Techniques ◽  
Religious Community ◽  
Oil Painting ◽  
Spectrometry Analysis ◽  
Non Invasive ◽  
Madonna And Child

This work presents the results of the in situ, non-invasive diagnostic investigations performed on the canvas oil painting depicting Madonna and Child, venerated as ‘Maria Santissima delle Grazie’ by the local religious community. The work of art (72 cm × 175 cm) is located on the high altar of the main Church in Mirabella Imbáccari, near Catania (Sicily, Italy). The painter is anonymous, and the supposed dating is the late eighteenth century. Although the painting has never been studied before, it has been attributed to a Sicilian workshop in the literature, raising the doubts of the art historian who conducted this study and who hypothesized a Neapolitan manufacture. Furthermore, due to the good conservation state detected by a macroscopic examination, doubts also arose about dating. To shed light on these aspects, a technical-scientific examination proved necessary. Multispectral imaging techniques (IR Reflectography, UV-induced visible Fluorescence, X-ray) are carried out for the study of the execution technique, the identification of underlying remakes, sketch drawing and the evaluation of the conservation conditions. XRF spectrometry analysis is performed for the identification of the chemical elements constituting the pigments (inorganic chromophores). The diagnostic results allowed this research to confirm the dating suggested by the historical-stylistic knowledge and to highlight new technical peculiarities supporting the attribution to a Neapolitan workshop.

scholarly journals Fur glowing under UV: a widespread consequence of porphyrin accumulation in mammals

2021 ◽  
Author(s):  
Séverine Toussaint ◽  
Jasper Ponstein ◽  
Mathieu Thoury ◽  
Rémi Métivier ◽  
Daniela Kalthoff ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Related Species ◽  
Multispectral Imaging ◽  
Physiological Condition ◽  
State Of The Art ◽  
Imaging Techniques ◽  
Interspecific Communication ◽  
Specific Function ◽  
Free Base ◽  
Nocturnal Mammals

Abstract Spectacular photoluminescence (PL) phenomena have been increasingly reported in various organisms from diverse ecosystems. However, the chemical basis of this PL remains poorly defined, and its potential ecological function is still blurry, especially in mammals. Here we used state-of-the-art spectroscopy and multispectral imaging techniques to document new cases of mammalian ultraviolet-induced PL (UV-PL) and to identify free-base porphyrins and natural derivatives as the organic compounds responsible for the reddish luminescence observed in the hairs and spines of distantly related species. We argue that pink to red UV-PL is predominantly observed in crepuscular and nocturnal mammals because porphyrins are photodegradable, and that this phenomenon might not have a specific function in intra- or interspecific communication but consists of a byproduct of a widespread physiological condition, overlooked in mammals.Co-first authors: Séverine Toussaint and Jasper Ponstein

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