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Archival aerial photogrammetric surveys, a data source to study land use/cover evolution over the last century : opportunities and issues / Arnaud Le Bris (2019)
Titre : Archival aerial photogrammetric surveys, a data source to study land use/cover evolution over the last century : opportunities and issues Type de document : Article/Communication Auteurs : Arnaud Le Bris , Auteur ; Sébastien Giordano , Auteur Editeur : Leibniz : Leibniz Institute of Ecological Urban and Regional Development Année de publication : 2019 Conférence : ILUS 2019, 3rd International land use symposium, Land use changes: Trends and projections 04/12/2019 06/12/2019 Paris France programme sans actes Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] automatisation
[Termes IGN] chaîne de traitement
[Termes IGN] détection de changement
[Termes IGN] égalisation radiométrique
[Termes IGN] géoréférencement indirect
[Termes IGN] image numérisée
[Termes IGN] modèle numérique de surface
[Termes IGN] occupation du sol
[Termes IGN] orientation absolue
[Termes IGN] orthoimage
[Termes IGN] orthophotoplan argentique
[Termes IGN] vingtième siècleRésumé : (auteur) Images from archival aerial photogrammetric surveys are a unique and relatively unexplored means to chronicle 3D land-cover changes occurred since the mid20th century. They provide a relatively dense temporal sampling of the territories with very high spatial resolution. Thus, they offer time series data which can answer to a large variety of long-term environmental monitoring studies. Besides, they are generally stereoscopic surveys, making it possible to derive 3D information (Digital Surface Models). In recent years, they have often been digitized, making them more suitable to be considered in automatic analyses processes. For instance, IGN (the French national mapping agency) has digitized its archival aerial photogrammetric surveys: images can be downloaded from a web service (http://remonterletemps.ign.fr/) Thus, archival aerial photogrammetric surveys appear as being a powerful remote sensing data source to study land use/cover evolution over the last century. However, several difficulties have to be faced to be able to use them in automatic analysis processes. A first bottleneck for accurate comparison between epochs is their fine georeferencing. Such information has generally been lost and must be retrieved. No fully automatic method has been proposed yet and existing studies are rather limited in terms of area and number of dates. State-of-the-art shows that one major challenge is the identification of ground references: cartographic coordinates and their position in the archival images. This task is often manually performed, and extremely time-consuming. This contribution proposes to use a photogrammetric approach, and states that the 3D information that can be computed is the key to full automation. Its original idea lies in a the use of the coarse absolute image orientation from existing metadata to derive coarse Digital Surface Model (DSM) and orthoimage that are then used to improve absolute image orientation. It only relies on a recent orthoimage+DSM, used as master reference for all epochs. The coarse orthoimage, compared with such a reference, allows the identification of dense ground references and the coarse DSM provides their position in the archival images. A new iteration of the georeferencing process can then be done using these ground references. At the end, images orientation is retrieved and orthoimages as well as digital surface models can be computed for each epoch. Another issue is the radiometric equalization of images (to remove atmospheric as well as vignetting effects), in order to obtain a homogeneous mosaic suitable with automatic classification processes. Last but not least, surveys available on a study area can exhibit very different characteristics: survey pattern, focal, spatial resolution, modality (panchromatic, color, infrared...). Planimetric and altimetric accuracies of derived products depend on these characteristics. Thus, automatic change detection and analysis processes have to cope with these uncertainties. Numéro de notice : C2019-069 Affiliation des auteurs : LASTIG MATIS (2012-2019) Thématique : IMAGERIE Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97024 Engraved footprints from the past. Retrieving cartographic geohistorical data from the Cassini Carte de France, 1750-1789 / Bertrand Duménieu (2019)
Titre : Engraved footprints from the past. Retrieving cartographic geohistorical data from the Cassini Carte de France, 1750-1789 Type de document : Article/Communication Auteurs : Bertrand Duménieu , Auteur ; Julien Chadeyron, Auteur ; Pascal Cristofoli, Auteur ; Julien Perret , Auteur ; Laurence Jolivet , Auteur ; Stéphane Baciocchi, Auteur ; Stéphane Gomis, Auteur ; Maurizio Gribaudi, Auteur ; Isabelle Langlois, Auteur ; Claude Motte, Auteur ; Marie-Christine Vouloir, Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2019 Projets : SODUCO / Perret, Julien Conférence : ICC 2019, 29th International Cartographic Conference ICA, Mapping everything for everyone 15/07/2019 20/07/2019 Tokyo Japon Open Access Abstracts of the ICA Importance : 2 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] base de données localisées
[Termes IGN] carte de Cassini
[Termes IGN] carte de France
[Termes IGN] code source libre
[Termes IGN] données vectorielles
[Termes IGN] esthétique cartographique
[Termes IGN] extraction de données
[Termes IGN] histoire de la cartographie
[Termes IGN] système d'information géographiqueRésumé : (auteur) Antique maps are full of engraved geohistorical features. They provide representations of past states of the geographical space and are favored by historians and social scientists for their uniqueness and coherence. Working on a GIS dedicated to the history of the French territory, we extracted spatial information from the Cassini Carte de France (full name Carte Générale & Particulière de la France) as vector data. Based on the first geodetic survey of France [1, 4], this well-known and monumental map has been drawn on 182 paper sheets of size 610 x 955 mm at the scale of 1:86,400 or 1 line for 100~toises (1 inch to 1.36 miles). It depicts the French territory with fine-grained information about populated and named places, settlements, landscape features, hydrographic, ecclesiastical and road networks [3, 5, 6, 7]. As a case study, the sheet numbered 52 provided more than 6 800 spatial footprints that we have stored as a geographic database. Following the distinction made by Cassini himself between “geometric” and “topographic” entities, our geographical database is composed of two families of data, namely Triangulated Geographical Entities (“geometric” entities in Cassini’s own terms) whose geodetic properties are partly documented and Relative Geographical Entities (“topographic” in Cassini’s terms) which are dependent on and located relative to the former (Fig. 1). Those entities are analytically distinct but come together from a single artifact: the primary source they are engraved in during the mapmaking process. Because this process of embeddedness is not fully documented, retrieving both classes of entities called for a cautious cartographic visualisation with similar semiological rules and aesthetics as the original historical map (Fig. 2). This “Cassini map style” preserves the cartographic properties of the geohistorical data extracted from this primary source: generalisation, scale, spatial granularity and the overall intentions of the mapmakers [2]. Often neglected, such properties are constitutive components and dimensions of the mapping style which forms the context and gives crucial information on the accuracy and the relationships between geo-historical data enclosedin.Ourposterprovidesarenewedcartographicvisualisationofthesheet52ndsheetoftheCartedeFrance, centred on the french cities of Clermont, Riom and Thiers. It reveals unnoticed cartographic entities that were hardly legible in the original map. The historiography of cartography has been largely, and for a long time, based on critical edition of old maps published as non-georeferenced facsimile. We propose to renew this approach by producing digital maps from vector geographic databases that combine the aesthetics and semiology of old map styles with the modelling capabilities of modern GIS. Numéro de notice : C2019-036 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Poster nature-HAL : Poster-avec-CL DOI : 10.5194/ica-abs-1-68-2019 En ligne : https://doi.org/10.5194/ica-abs-1-68-2019 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95335 Seeing the past with computers: Experiments with augmented reality and computer vision for history / Kevin Kee (2019)
Titre : Seeing the past with computers: Experiments with augmented reality and computer vision for history Type de document : Monographie Auteurs : Kevin Kee, Éditeur scientifique ; Thimothy Compeau, Auteur Editeur : Chicago : University of Chicago Press Année de publication : 2019 Importance : 254 p. Format : 16 x 23 cm ISBN/ISSN/EAN : 9780472900879 9780472131112 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Techniques de l'information
[Termes IGN] exploration de données
[Termes IGN] formation
[Termes IGN] histoire
[Termes IGN] réalité augmentée
[Termes IGN] recherche d'image basée sur le contenu
[Termes IGN] sciences humaines numériques
[Termes IGN] vision par ordinateurRésumé : (éditeur) Recent developments in computer technology are providing historians with new ways to see—and seek to hear, touch, or smell—traces of the past. Place-based augmented reality applications are an increasingly common feature at heritage sites and museums, allowing historians to create immersive, multifaceted learning experiences. Now that computer vision can be directed at the past, research involving thousands of images can recreate lost or destroyed objects or environments, and discern patterns in vast datasets that could not be perceived by the naked eye. Seeing the Past with Computers is a collection of twelve thought-pieces on the current and potential uses of augmented reality and computer vision in historical research, teaching, and presentation. The experts gathered here reflect upon their experiences working with new technologies, share their ideas for best practices, and assess the implications of—and imagine future possibilities for—new methods of historical study. Among the experimental topics they explore are the use of augmented reality that empowers students to challenge the presentation of historical material in their textbooks; the application of seeing computers to unlock unusual cultural knowledge, such as the secrets of vaudevillian stage magic; hacking facial recognition technology to reveal victims of racism in a century-old Australian archive; and rebuilding the soundscape of an Iron Age village with aural augmented reality. This volume is a valuable resource for scholars and students of history and the digital humanities more broadly. It will inspire them to apply innovative methods to open new paths for conducting and sharing their own research. Note de contenu : Introduction: Seeing the past
1- The people inside
2- Bringing trouvé to light: speculative computer vision and media history
3- Seeing swinburne: toward a mobile and augmented-reality edition of poems and ballads, 1866
4- Mixed-reality design for broken-world thinking
5- Faster than the eye: Using computer vision to explore sources in the history of stage magic
6- The analog archive: Image-mining the history of electronics
7- Learning to see the past at scale: Exploring web archives through hundreds of thousands of images
8- Building augmented reality freedom stories: A critical reflection
9- Experiments in alternative-and augmented-reality game design: Platforms and collaborations
10- Tecumseh returns: A history game in alternate reality, augmented reality, and reality
11- History all around us: Toward best practices for augmented reality for history
12- Hearing the pastNuméro de notice : 25920 Affiliation des auteurs : non IGN Thématique : INFORMATIQUE Nature : Monographie En ligne : https://dx.doi.org/10.3998/mpub.9964786 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96136
Titre : Valorisation de récits de vie de Républicains espagnols Type de document : Article/Communication Auteurs : Catherine Dominguès , Auteur ; Laurence Jolivet , Auteur ; Carmen Brando , Auteur Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2019 Projets : MATRICIEL / Perret, Julien Conférence : EGC 2019, Atelier DAHLIA 22/01/2019 22/01/2019 Metz France Open Access Proceedings Importance : pp 82 - 84 Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] corpus
[Termes IGN] Espagne
[Termes IGN] récit
[Termes IGN] représentation cartographique
[Termes IGN] traitement du langage naturel
[Termes IGN] vingtième siècleRésumé : (auteur) Ce travail vise à analyser des récits de vie de Républicains espagnols sous l’angle des lieux désignés et d’en proposer une représentation cartographique. Cette analyse combinée montre l’interdépendance des questions linguistiques et cartographiques soulevées. Numéro de notice : C2019-041 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésNat DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95412 Documents numériques
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Valorisation de récits de vie de Républicains espagnols - pdf éditeurAdobe Acrobat PDF Digital preservation, social history, and the Quon Sang Lung Laundry building : a case study from Fort Macleod, Alberta, Canada / Peter Dawson in Applied geomatics, vol 10 n° 4 (December 2018)
[article]
Titre : Digital preservation, social history, and the Quon Sang Lung Laundry building : a case study from Fort Macleod, Alberta, Canada Type de document : Article/Communication Auteurs : Peter Dawson, Auteur ; Alireza Farrokhi, Auteur ; Allan Rowe, Auteur ; Farzan Baradaran, Auteur ; Derek D. Lichti, Auteur Année de publication : 2018 Article en page(s) : pp 361 - 375 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] Alberta (Canada)
[Termes IGN] conservation du patrimoine
[Termes IGN] histoire
[Termes IGN] immigration
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] semis de pointsRésumé : (Auteur) Social history focuses on understanding the everyday lives of ordinary people (Richardson 2011, Social history, local history, and historiography: collected essays). The ethnic minorities that made up immigrant communities in North American towns and cities during the late nineteenth and early twentieth centuries have been of particular interest to social historians (Tosh 2017, From the ‘cape of despair’ to the Cape of Good Hope: letters of the emigrant poor in early nineteenth-century England. Social History 42:480–500). However, language barriers and low rates of literacy often limit the number of first person accounts written by people who belonged to such communities. This paper explores how terrestrial laser scanning (TLS) and 3D reconstructive modeling of heritage buildings can provide new insights into the social history of Chinese immigrants in Alberta during the nineteenth and early twentieth centuries. These technologies were used to rapidly and accurately document the Quon Sang Lung Laundry shop in Fort Macleod, Alberta, prior to its scheduled demolition. The resulting digital data sets were used to construct detailed architectural plans of the building, as well as photorealistic 3D reconstructions of the shop, as it would have appeared at different points in history. The resulting point clouds were further explored to detect and extract evidence of the lived experiences of its occupants. For example, the conflicts and tensions surrounding Chinese laundries, and the discriminatory bylaws that resulted, may be subtly reflected in specific architectural details of the laundry shop, such as evidence for the presence of walls no longer standing. The ability to return to accurate digital models, over and over again, provides unique opportunities to construct social histories of buildings long after they are gone. Numéro de notice : A2018-591 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s12518-018-0232-4 Date de publication en ligne : 11/07/2018 En ligne : https://doi.org/10.1007/s12518-018-0232-4 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92515
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