Hidden Text Detection by Infrared Thermography / Anwendung der aktiven Infrarotthermographie (IRT) zur Erfassung von verdeckten Texten / Utilisation de la thermographie infrarouge (IRT) pour détecter des textes cachés

2013 ◽  
Vol 34 (3) ◽  
Author(s):  
Fulvio Mercuri ◽  
Roberta Gnoli ◽  
Stefano Paoloni ◽  
Noemi Orazi ◽  
Cristina Cicero ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Infrared Thermography ◽  
Text Detection ◽  
Qualitative Description ◽  
Physical Mechanisms ◽  
Active Infrared Thermography ◽  
History Of

AbstractWe present an opto-thermal approach based on the use of active infrared thermography (IRT) for the study of texts hidden inside the bookbinding structure of ancient books. In particular we focus our investigation on the detection and characterization of texts on paper scraps, belonging to earlier handwritten or printed leaves, used for the making of bookbindings and lying between the end papers and the cover. A qualitative description of the physical mechanisms allowing the identification of texts is proposed and a comparative analysis of the results obtained by means of different IRT experimental configurations is presented. The results show that active IRT can be a very useful tool for the detection and the identification of underlying texts whose reading can provide useful information on the specific history of ancient books.

scholarly journals Evaluation and Selection of Video Stabilization Techniques for UAV-Based Active Infrared Thermography Application

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1604
Author(s):  
Shashank Pant ◽  
Parham Nooralishahi ◽  
Nicolas P. Avdelidis ◽  
Clemente Ibarra-Castanedo ◽  
Marc Genest ◽  
...  
Keyword(s):  
Infrared Thermography ◽  
Human Error ◽  
Inspection Time ◽  
Video Stabilization ◽  
Inspection System ◽  
Simple Method ◽  
Active Infrared Thermography ◽  
Thermal Profiling ◽  
Digital Video Stabilization

Unmanned Aerial Vehicles (UAVs) that can fly around an aircraft carrying several sensors, e.g., thermal and optical cameras, to inspect the parts of interest without removing them can have significant impact in reducing inspection time and cost. One of the main challenges in the UAV based active InfraRed Thermography (IRT) inspection is the UAV’s unexpected motions. Since active thermography is mainly concerned with the analysis of thermal sequences, unexpected motions can disturb the thermal profiling and cause data misinterpretation especially for providing an automated process pipeline of such inspections. Additionally, in the scenarios where post-analysis is intended to be applied by an inspector, the UAV’s unexpected motions can increase the risk of human error, data misinterpretation, and incorrect characterization of possible defects. Therefore, post-processing is required to minimize/eliminate such undesired motions using digital video stabilization techniques. There are number of video stabilization algorithms that are readily available; however, selecting the best suited one is also challenging. Therefore, this paper evaluates video stabilization algorithms to minimize/mitigate undesired UAV motion and proposes a simple method to find the best suited stabilization algorithm as a fundamental first step towards a fully operational UAV-IRT inspection system.

A simple method for defect area detection using active thermography

2009 ◽  
Vol 17 (4) ◽  
Author(s):  
S. Dudzik
Keyword(s):  
Thermal Diffusivity ◽  
Infrared Thermography ◽  
Subsurface Layer ◽  
Quantitative Characterization ◽  
Simple Method ◽  
Active Thermography ◽  
Active Infrared Thermography ◽  
Defect Area

AbstractIn this paper a simple method for defect area detection in the subsurface layer of materials was presented. The method uses active infrared thermography. A statistical detectivity ratio was introduced for a quantitative characterization of areas containing defects. The described algorithm of defect area detection was tested for a material with a low thermal diffusivity. The results of experimental and simulation investigations are presented. It was stated that the statistical detectivity ratio can be used to detect regions of defect presence, even for the non-uniformly heated surfaces.

scholarly journals BEE HONEY: HISTORY, CHARACTERISTICS, PROPERTIES, BENEFITS AND ADULTERATION IN THE BEEKEEPING SECTOR

2021 ◽  
Vol 4 (3) ◽  
pp. 98-114
Author(s):  
Aurica Chirsanova ◽  
◽  
Tatiana Capcanari ◽  
Alina Boistean ◽  
Imen Khanchel ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Food Product ◽  
Botanical Origin ◽  
Codex Alimentarius ◽  
Nutritious Food ◽  
Physico Chemical ◽  
History Of ◽  
Ancient Times ◽  
Honey Standards

This review aims to share the history of bees and the use of honey as the only natural sweetener available to mankind for more than 40,000 years. At the same time, the characteristic of the beekeeping sector is presented, highlighting the top honey producers worldwide. The botanical origin of honey is the basis for the characterization of the 14 types of honey presented. Honey standards were analyzed to provide an overview of quality and physico-chemical indices. The data indicated in the national and regional honey standard are identical to the data for the international Codex Alimentarius standard. After the comparative analysis of these 3 sources, no significant deviations were identified. The tendencies of using honey from ancient times as a nutritious food product, as a preservative, as a medicine for treating various diseases and for performing certain rituals, etc. were highlighted. At the same time, the population must be encouraged to consume this incomparable bee product.

Apocrypha from the History of the Jewish Military Union and its Authors

2008 ◽  
pp. 147-176
Author(s):  
Dariusz Libionka
Keyword(s):  
Comparative Analysis ◽  
Critical Analysis ◽  
Communist Regime ◽  
Research Approach ◽  
Warsaw Ghetto ◽  
History Of

This article is an attempt at a critical analysis of the history of the Jewish Fighting Union (JFU) and a presentation of their authors based on documents kept in the archives of the Institute of National Remembrance in Warsaw. The author believes that an uncritical approach and such a treatment of these materials, which were generated under the communist regime and used for political purposes resulted in a perverted and lasting picture of the history of this fighting organisation of Zionists-revisionists both in Poland and Israel. The author has focused on a deconsturction of the most important and best known “testimonies regarding the Warsaw Ghetto Uprising”, the development and JFU participation in this struggle, given by Henryk Iwaƒski, WΠadysΠaw Zajdler, Tadeusz Bednarczyk and Janusz Ketling–Szemley.A comparative analysis of these materials, supplemented by important details of their war-time and postwar biographies, leaves no doubt as to the fact that they should not be analysed in terms of their historical credibility and leads one to conclude that a profound revision of research approach to JFU history is necessary.

THE TIMURID PERIOD FROM THE HISTORY OF THE FINE ARTS

2019 ◽  
Vol 19 (2) ◽  
pp. 28-33
Author(s):  
Ulug'bek Kuryazov ◽  
Keyword(s):  
Comparative Analysis ◽  
Fine Arts ◽  
The World ◽  
History Of

The article examines the works of scholars in the study of the history of fine arts, in particular miniatures of the Amir Temur era and temurids. Special attention is paid to the history of the creativity of Mirak Nakkosh and the outstanding miniaturist Kamoliddin Behzod. A comparative analysis of several miniature works is given. As well as analyzed some miniatures stored in the collections of museums and libraries of the world

Russian Museum of Emperor Alexander III as a place of memory

2020 ◽  
Vol 2020 (11-1) ◽  
pp. 132-147
Author(s):  
Dmitry Rakovsky
Keyword(s):  
Comparative Analysis ◽  
Historical Consciousness ◽  
Russian Society ◽  
Museum Collection ◽  
Works Of Art ◽  
History Of ◽  
The Creation ◽  
Historical Representations

The main purpose of this article is to study the role of the Russian Museum in the formation of the historical consciousness of Russian society. In this context, the author examines the history of the creation of the Russian Museum of Emperor Alexander III and its pre-revolutionary collections that became the basis of this famous museum collection (in particular, the composition of the museum’s expositions for 1898 and 1915). Within the framework of the methodology proposed by the author, the works of art presented in the museum’s halls were selected and distributed according to the historical eras that they reflect, and a comparative analysis of changes in the composition of the expositions was also carried out. This approach made it possible to identify the most frequently encountered historical heroes, to consider the representation of their images in the museum’s expositions, and also to provide a systemic reconstruction of historical representations broadcast in its halls.

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