Alexandru Chelmus

Institute for Research and Development in Optoelectronics | inoe · Optoelectronic methods and techniques for artwork restoration & conservation

This paper presents the results of an in-depth diagnostic investigation carried out on four Transylvanian icons originally painted at the beginning of the 18th century and entirely repainted later, in 1911. The icons, originating from a wooden church in Alba County (Romania), were investigated by an array of non-invasive and micro-invasive techniqu...

The paper aims to present a method of obtaining quantitative information from X-rays based on the shades of grey. Relative shades of grey in radiographs are obtained due to different acquisition parameters (tube voltage, tube current and exposure time) and material type and thickness. For this method, samples made from the same material, but with d...

Acest volum este o colecţie de studii interdisciplinare realizate în cadrul proiectului demonstrativ „Platformă digitală integrată pentru valorizarea peisajului cultural din Munţii Buzăului. Studiu de caz: cadrul natural şi monumentele istorice din zona Aluniş-Bozioru”, derulat în perioada ianuarie 2017 - iunie 2018. Principalul obiectiv al proie...

This paper deals with the development of a multidisciplinary study on the current state of conservation of the facade of the Arciprestal Church of Santa María de Morella (Castellón, Spain), a work of the Gothic period of great historical and artistic value. The aim of this diagnosis was to undertake the preventive conservation actions required and...

This paper presents an optimized approach for the characterization of complex painting layers and for the evaluation of previous interventions on artworks. Focusing on the capabilities of hyperspectral imaging, which combines spectral and imaging data, this specific approach reflects also the importance of complementary methods and techniques, whic...

Four icons belonging to the altarpiece of an old wooden church in Alba county (Romania) were analyzed by means of Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), Laser-induced breakdown spectroscopy (LIBS), hyperspectral imaging and X-ray radiography. The icons dated to the beginning of the 18th century are prominent examp...

This paper presents an optimized approach for the characterization of complex painting layers and for the evaluation of previous interventions on artworks. Focusing on the capabilities of hyperspectral imaging, which combines spectral and imaging data, this specific approach reflects also the importance of complementary methods and techniques, whic...

This paper presents the methodology and the results of the implementation of an interdisciplinary research model regarding the characterization of a cultural landscape. This work was focused on 5 rupestral monuments in the Buzău Mountains and is part of a demonstrative project funded by the Program Partnerships in Priority domains PN-III-P2-2.1. I...

It is known that the conservation of cultural heritage requires that atmospheric parameters as temperature, humidity or radiation be constant and have well-defined values. Small deviations may irreversibly damage paintings, sculptures, jewels, textiles, etc. Also, air pollution (i.e. increased concentration of trace gases) may affect negatively the...

The paper presents a comparative investigation on two icons, dated approximately 17–18th and 19th century, respectively, which are representative for the Russian Lipovan cultural communities. A non-invasive protocol was employed aiming to gain a wider perspective on this type of icons, which had not been studied so far through analytical means. Ima...

This paper presents two related aspects which reflect the interest in multimedia archive management and preventive conservation. First, an overview of the national program Folkmedia-Folkloric Multimedia Deposit is presented, in order to understand the context and the strategy developed for the Archive of the Institute of Ethnography and Folklore "C...

This paper presents an ongoing work within a national project regarding the scientific investigation of one of the most important archaeological sites in Romania: Ulpia Traiana Sarmizegetusa. Although the project has many objectives, in this paper we will focus on the development work of a virtual archaeodrome for the archaeological park. In this r...

This paper presents a newly started demonstrative project regarding the implementation and validation of an interdisciplinary research model for the Aluniș-Bozioru (Romania) cultural landscape, with the development of an online interactive digital product. This digital product would provide complementary data about the historical monuments and thei...

The paper is divided in two parts, first part presents how the propagation of electromagnetic wave is influenced by the local condition of the propagation medium, in our case the soil, and by the central frequency of the transmitter antenna. The second part contains the results of a GPR survey on an archaeological site from Malaiesti, Prahova Count...

This paper is divided in two parts, in the first part is presented a method of validating radargrams interpretation, using matGPR model builder and simulator. The second part demonstrates the applicability of this method with simulations based on several radargrams obtained from GPR investigations made in Romania.

The current paper takes into study the microclimate conditions and their impact on the paper collection belonging to the archive of the Romanian Academy’s „C. Brăiloiu” Institute of Ethnography and Folklore, assessing the dynamics of t and RH during the course of a full yearly cycle. The microclimate data compared are collected for two scenarios: o...

The current paper presents the results obtained during the first application of an original platform that grants real-time access to a variety of users to in situ studies and campaigns, opening an online door-way for national and international cooperation. The techniques selected for the investigation and cleaning of the monument - target of the st...