13 research outputs found
La reconstruction du panorama de la « Tapisserie de Bayeux » comme fond de rĂ©fĂ©rence dâun systĂšme dâinformation documentaire spatialisĂ©e
LâĂtat et la Ville de Bayeux sâassocient Ă lâUniversitĂ© de Caen-Normandie et au CNRS pour la conception et le dĂ©veloppement dâun outil numĂ©rique dâĂ©tude et de valorisation de la Tapisserie de Bayeux, broderie mĂ©diĂ©vale du XIe siĂšcle, classĂ©e au titre des monuments historiques. Il consiste en un « systĂšme dâinformation documentaire spatialisĂ©e » (SIDS), sâinspirant dâun SIG (systĂšme dâinformation gĂ©ographique) classique, crĂ©Ă© Ă lâĂ©chelle de lâĆuvre. Cet outil permettra lâexploitation des donnĂ©es documentaires et scientifiques sur lâĆuvre, gĂ©orĂ©fĂ©rencĂ©es sur une reprĂ©sentation haute dĂ©finition de la Tapisserie. Sa rĂ©alisation rĂ©pond Ă diffĂ©rentes problĂ©matiques comme le traitement des images pour la crĂ©ation de ce fond de rĂ©fĂ©rence, obtenu Ă partir dâune suite de clichĂ©s numĂ©riques. Construire ainsi un panorama est une problĂ©matique connue dans le domaine de lâanalyse et le traitement de lâimage. Cependant, cette broderie prĂ©sente certaines contraintes, comme son support non rigide et sa taille exceptionnelle, de prĂšs de 70 m, soit une image totale de 480 000 x 6 000 pixels qui rend ces algorithmes existants obsolĂštes. En contact direct avec les Ă©quipes de lâUniversitĂ© de Caen impliquĂ©es, le GREYC a dĂ©veloppĂ© une approche basĂ©e sur le matching des points dâintĂ©rĂȘts SIFT et un algorithme de fusion basĂ© sur un modĂšle de dĂ©formation gĂ©omĂ©trique Ă©lastique afin de conserver la structure de lâĆuvre. Cette approche conserve la qualitĂ© des images, sans limite de nombre ou de types, et permet aujourdâhui un accĂšs facilitĂ© Ă cette Ćuvre majeure.The services of the State and of the City of Bayeux have joined forces with the University of Caen-Normandy and with the CNRS in order to design and develop a digital tool for the study and interpretation of the so-called Bayeux Tapestry, an eleventh-century medieval embroidery which is listed in France as a historic monument. This project involves a spatialised documentary information system inspired by a classic geographical information system but adapted to the scale of the embroidery. This tool will allow for the management of documentary and scientific information about the work, geo-referenced to a high definition representation of the tapestry. The realisation of the project involves finding answers to a number of questions such as the production of images for the tool, obtained from a series of digital photographs. Building up a panorama in this way is not an innovation in the field of image treatment and analysis. But the Bayeux tapestry presents certain specific constraints, such as its non-rigid backing and the mere size of the piece, 70 metres long. This means a total image of 480,000 x 6,000 pixels, making existing algorithms obsolete. In direct contact with the University teams involved, the GREYC has developed an approach based on matching up the SIFT interest points and a fusion algorithm based on a model of elastic geometrical deformation, in order to respect the structure of the tapestry. This approach allows for the high quality of the images to be preserved, without any limit to their number or type, and today facilitates access to this major work
Redocumentariser la Tapisserie de Bayeux : base de donnĂ©es documentaire et systĂšme dâinformations spatialisĂ©es
Dans le cadre du projet de refonte du MusĂ©e de la Tapisserie de Bayeux Ă lâhorizon 2024, menĂ© par la Ville de Bayeux et la DRAC Normandie, en collaboration avec la rĂ©gion Normandie et le dĂ©partement Calvados, des outils numĂ©riques permettant de dĂ©couvrir et dâĂ©tudier la Tapisserie sous un angle nouveau ont Ă©tĂ© Ă©laborĂ©s.Ces outils consistent en un « SystĂšme dâinformation documentaire spatialisĂ©e » (SIDS), combinaison dâun systĂšme documentaire et dâun systĂšme dâinformation spatialisĂ©. Ils offrent des solutions de gestion et de valorisation des ressources documentaires relatives Ă la Tapisserie de Bayeux, et doivent Ă terme accompagner lâensemble des publics qui sâintĂ©ressent Ă lâĆuvre, notamment les chercheurs en sciences humaines, les conservateurs-restaurateurs, les spĂ©cialistes du textile, le grand public. Ce projet est le fruit dâun Ă©troit partenariat entre lâĂtat, la Ville de Bayeux, lâuniversitĂ© de Caen Normandie, le CNRS et lâEnsicaen.Alongside the renewal of the Bayeux Tapestry Museum planned for 2024, led by the city of Bayeux, the DRAC Normandy, the Normandy region and the Calvados department, several numeric tools have been created to discover and examine the Tapestry in new ways.Those tools consist in a Spatialised Document Information System (SDIS), combining a Document database and a Spatialised information system. They offer solutions to manage and to enhance documentary resources related to the Bayeux Tapestry and should, at the end, accompany all the persons interested in the Tapestry, particularly scholars in Humanities, curators-restorers, specialists in textile and the public. This project is the result of a close collaboration between the State, the city of Bayeux, the University of Caen Normandy, the CNRS and the Ensicaen.Nellâambito del progetto di ristrutturazione del Museo dellâArazzo di Bayeux che dovrebbe concludersi nel 2024, portato avanti dalla CittĂ di Bayeux e dalla DRAC Normandie, in collaborazione con la regione Normandia e il dipartimento del Calvados, sono stati elaborati nuovi strumenti informatici che permettono di scoprire e studiare lâArazzo da un nuovo punto di vista.Questi strumenti consistono in un « Sistema dâinformazione documentaria spazializzata » (SIDS), combinazione di un sistema documentario e di un sistema dâinformazione spazializzato. Essi offrono delle soluzioni di gestione e di valorizzazione delle fonti documentarie relative allâArazzo di Bayeux, e devono accompagnare i vari fruitori dellâopera, soprattutto i ricercatori in scienze umane, i conservatori-restauratori, gli specialisti del tessile, il grande pubblico. Questo progetto Ăš il frutto di uno stretto partenariato tra lo Stato, la CittĂ di Bayeux, lâUniversitĂ di Caen Normandie, il CNRS e lâENSICAEN
Bayeux Tapestry: First use of early synthetic dyes for the restoration of a masterpiece
International audienc
La reconstruction du panorama de la « Tapisserie de Bayeux » comme fond de rĂ©fĂ©rence dâun systĂšme dâinformation documentaire spatialisĂ©e
The services of the State and of the City of Bayeux have joined forces with the University of Caen-Normandy and with the CNRS in order to design and develop a digital tool for the study and interpretation of the so-called Bayeux Tapestry, an eleventh-century medieval embroidery which is listed in France as a historic monument. This project involves a spatialised documentary information system inspired by a classic geographical information system but adapted to the scale of the embroidery. This tool will allow for the management of documentary and scientific information about the work, geo-referenced to a high definition representation of the tapestry. The realisation of the project involves finding answers to a number of questions such as the production of images for the tool, obtained from a series of digital photographs. Building up a panorama in this way is not an innovation in the field of image treatment and analysis. But the Bayeux tapestry presents certain specific constraints, such as its non-rigid backing and the mere size of the piece, 70 metres long. This means a total image of 480,000 x 6,000 pixels, making existing algorithms obsolete. In direct contact with the University teams involved, the GREYC has developed an approach based on matching up the SIFT interest points and a fusion algorithm based on a model of elastic geometrical deformation, in order to respect the structure of the tapestry. This approach allows for the high quality of the images to be preserved, without any limit to their number or type, and today facilitates access to this major work
Publisher Correction: Rheumatological features of Whipple disease
International audienc
Rheumatological features of Whipple disease
International audienceWhipple disease (WD) is a rare infectious systemic disease. Rheumatologists are at the frontline of WD diagnosis due to the early rheumatological manifestations. An early diagnosis is crucial, as usual anti-rheumatic drugs, especially TNF inhibitors, may worsen the disease course. We conducted a retrospective multicentre national study from January 2010 to April 2020 to better characterize the rheumatological features of WD. Classic WD (CWD) was defined by positive periodic acid-Schiff (PAS) staining of a small-bowel biopsy sample, and non-CWD (NCWD) was defined by negative PAS staining of a small-bowel biopsy sample but at least one positive Tropheryma whipplei (TW) polymerase chain reaction (PCR) for a digestive or extradigestive specimen. Sixty-eight patients were enrolled, including 11 CWD patients. Twenty patients (30%) received TNF inhibitors during the WD course, with inefficacy or symptom worsening. More digestive symptoms and systemic biological features were observed in CWD patients than in NCWD patients, but both patient groups had similar outcomes, especially concerning the response to antibiotics and relapse rate. Stool and saliva TW PCR sensitivity were both 100% for CWD and 75% for NCWD and 89% and 60% for small-bowel biopsy sample PCR, respectively. WD encountered in rheumatology units has many presentations, which might result from different pathophysiologies that are dependent on host immunity. Given the heterogeneous presentations and the presence of chronic carriage, multiple TW PCR tests on samples from specific rheumatological sites when possible should be performed, but samples from nonspecific digestive and extradigestive sites also have great value