37 research outputs found
Multipurpose, dual-mode imaging in the 3–5 µm range (MWIR) for artwork diagnostics: A systematic approach
No full textWe present a multi-purpose, dual-mode imaging method in the Mid-Wavelength Infrared (MWIR) range (from 3 µm to 5 µm) for a more efficient nondestructive analysis of artworks. Using a setup based on a MWIR thermal camera and multiple radiation sources, two radiometric image datasets are acquired in different acquisition modalities, the image in quasi-reflectance mode (TQR) and the thermal sequence in emission mode. Here, the advantages are: the complementarity of the information; the use of the quasi-reflectance map for calculating the emissivity map; the use of TQR map for a referentiation to the visible of the thermographic images. The concept of the method is presented, the practical feasibility is demonstrated through a custom imaging setup, the potentiality for the nondestructive analysis is shown on a notable application to cultural heritage. The method has been used as experimental tool in support of the restoration of the mural painting “Monocromo” by Leonardo da Vinci. Feedback from the operators and a comparison with some conventional diagnostic techniques is also given to underline the novelty and potentiality of the method
Digital cultural heritage imaging via osmosis filtering
No full textIn Cultural Heritage (CH) imaging, data acquired within different spectral regions are often used to inspect surface and sub-surface features. Due to the experimental setup, these images may suffer from intensity inhomogeneities, which may prevent conservators from distinguishing the physical properties of the object under restoration. Furthermore, in multi-modal imaging, the transfer of information between one modality to another is often used to integrate image contents. In this paper, we apply the image osmosis model proposed in [4, 10, 12] to solve correct these problems arising when diagnostic CH imaging techniques based on reflectance, emission and fluorescence mode in the optical and thermal range are used. For an efficient computation, we use stable operator splitting techniques to solve the discretised model. We test our methods on real artwork datasets: the thermal measurements of the mural painting “Monocromo” by Leonardo Da Vinci, the UV-VIS-IR imaging of an ancient Russian icon and the Archimedes Palimpsest dataset
Dual mode imaging in mid infrared with thermal signal reconstruction for innovative diagnostics of the "Monocromo" by Leonardo da Vinci.
No full textDual mode imaging in the mid infrared band, a joint use of thermography and quasi-thermal reflectography, was recently proposed as a full field diagnostic tool in cultural heritage. Here we discuss for the first time, to the best of our knowledge, a detailed application of such non destructive technique to the diagnostics of frescoes, with an emphasis on the location of detachments. We also investigate the use of a thermographic method based on TSR (thermal signal reconstruction), in a long pulse stimulus scheme, as well as the spatial registration of thermal images after post-processing analysis to their visible counterpart, so as to obtain a fine resolution diagnostic map. As an exemplar case study, we report about the application of dual mode imaging with a 500 [Formula: see text] pixel size at object plane on the "Monocromo", a fresco by Leonardo da Vinci located in the Sforza Castle (Milan, Italy). Our technique was used to guide the conservators during the restoration works, opening new perspectives in artwork diagnostics
Infrared Analysis and ‘Thermal Quasi-Reflectography’
No full textExperimental analysis based on Thermal Quasi-Reflectography and Thermography applied to the fresco "Monocromo" by Leonardo da Vinci during the restoratio
ROCOPOT (ROman COmmonware POTtery) Dataset
No full textA total of 2475 B/W images of Roman pottery profiles from 11 catalogues
(refined with 231 Bases, 278 Handles, 2103 Rims and 248 Rims with handles).
An .xls file containing asoociated metadata is included.
Reference webpage: https://mach.maths.cam.ac.uk/datasets/rocopot/
Associated publication:
S. Parisotto, A. Launaro, N. Leone and C.-B. Schönlieb. Unsupervised clustering of Roman pottery profiles from their SSAE representation. (ArXiv
Thermal imaging in the 3-5 micron range for precise localization of defects: application on frescoes at the Sforza Castle
No full textInfrared methods are of great importance in nondestructive testing of artworks, allowing a remote and wide-field imaging of interesting hidden features. Here we discuss a workflow based on thermal imaging in the mid infrared 3-5 micron range for the evaluation of subsurface defects in frescoes. Particular attention is payed to obtaining a high resolution (submillimetric) localization of the defects. The transfer of diagnostics techniques into real world applications, is discussed through the proof of concept of the proposed workflow on frescoes at the Sforza Castle (Milan, Italy)
Italian Cookery in Trail
No full textItalian food habits are a very important element of Italian culture, and are habits that go through adjustment for Italian immigrants in North America. In this essay, the food habits of Italian immigrants who came to Trail in the early 1900's are studied, as well as the impact of these immigrants and their food on the city of Trail today
A coparentalidade na adoção: viabilidade da adoção conjunta por pessoas sem vínculo conjugal
No full textO presente estudo tem por objetivo investigar a viabilidade da adoção conjunta por famílias coparentais. Inicialmente, será feita uma breve recapitulação histórica da família, a fim de apurar as principais modificações que ocorreram em sua estrutura ao longo do tempo, e como a sociedade superou a família tradicional para consagrar as famílias plurais Em seguida, será investigado como se estruturam as famílias coparentais. Por isso, a conjugalidade, a parentalidade e a relação existente entre essas duas características serão os pontos mais examinados. Depois, pela ótica do melhor interesse da criança, serão enfrentados os principais fundamentos da adoção e, por último, a viabilidade da adoção conjunta por famílias coparentais, apesar da norma extraída do art. 42, §2º, do Estatuto da Criança e do Adolescente (ECA), cuja interpretação literal aponta no sentido da impossibilidade.The present study aims to investigate the feasibility of joint adoption by co-parenting families. A brief historical recounting of the institution of family will be made in order to ascertain the main changes that have occurred in its structure over time and how society overcame the traditional family in order to establish plural families. Then, it investigates how co-parenting families are structured. Conjugality, parenthood and the relationship between these two characteristics will be, therefore, the more thoroughly examined points. After that, the main foundations of adoption will be examined from the perspective of the best interest of the child, and, lastly, so will the viability of joint adoption by co-parenting families, although the norm inferred from article 42, paragraph 2, of the Brazilian Child and Adolescent Statute, which literal interpretation points to inviability
Addisonia enodis (Vetigastropoda: Lepetelloidea) associada a uma cápsula ovígera de elasmobrânquio no Oceano Atlântico sul e a descoberta da espécie em águas profundas no nordeste do Brasil
No full textA gastropod specimen of the subfamily Addisoniinae Dall, 1882 is reported here for the first time associated with an elasmobranch egg capsule from the South Atlantic Ocean. A specimen of Addisonia enodis Simone, 1996 was found living inside an egg capsule of Atlantoraja castelnaui (Miranda Ribeiro, 1907) (Arhynchobatidae Fowler, 1934) from shallow waters off southeastern Brazil. Previous studies have reported the association of members of the genus Addisonia Dall, 1882 only with the egg capsules of sharks from the family Scyliorhinidae Gill, 1862 and skates from the family Rajidae de Blainville, 1816. Other specimens of A. enodis are also here reported to occur off northeastern Brazil based on shells found in deep waters off the state of Sergipe, which fills a gap in its distribution in the Southwestern Atlantic to the north of this region. Addisonia enodis was recognized as a synonym of A. excentrica (Tiberi, 1855). However, we consider A. enodis as a valid species until further data clarify this issue based on a large sample of Addisonia from Brazilian waters._________________________________________________________________________________________ RESUMO: Um espécime de gastrópode da subfamília Addisoniinae Dall, 1882 é reportado aqui pela primeira vez associado a uma cápsula ovígera de elasmobrânquio encontrada no Oceano Atlântico sul. Um espécime de Addisonia enodis Simone, 1996 foi achado vivendo na parte interna da cápsula ovígera de Atlantoraja castelnaui (Miranda Ribeiro, 1907) (Arhynchobatidae Fowler, 1934) em águas rasas do sudeste do Brasil. Estudos prévios mencionaram a associação de membros do gênero Addisonia Dall, 1882 somente com desovas de tubarões da família Scyliorhinidae Gill, 1862 e raias da família Rajidae de Blainville, 1816. Outros espécimes de A. enodis também são aqui reportados para o nordeste do Brasil com base em conchas coletadas em águas profundas ao largo de Sergipe, as quais preenchem uma lacuna em sua distribuição no sudoeste do Atlântico. Addisonia enodis foi reconhecida como um sinônimo de A. excentrica (Tiberi, 1855). No entanto, essa espécie é considerada válida, neste estudo, até que mais dados demonstrem com clareza que tratam-se da mesma espécie
MATLAB/Python Codes for the Image Inpainting Problem
No full textThis is a detailed MATLAB/Python implementation of classic inpainting methods
