Nach oben pdf Integration of digital photogrammetry and terrestrial laser scanning for cultural heritage data recording

Integration of digital photogrammetry and terrestrial laser scanning for cultural heritage data recording

Integration of digital photogrammetry and terrestrial laser scanning for cultural heritage data recording

As presented in chapter 4, our proposed general integration approach is applied to the dataset of the old farm house in order to assess the results. Therefore, 3 RGB images and 35 camera images have been employed for the SfM reconstruction. The orientations and the geometry from all used images were successfully derived (see figure 4.18). Then, the correspondences between the sparse point clouds and the laser data can be easily determined using the stored 3D data in the generated images. These correspondences allow the estimation of the Helmert transformation parameters in order to calculate the orienta- tions in absolute coordinate system. Furthermore, a procedure based on an iterative com- putation of the seven-parameters was accomplished in order to remove blunders or outliers. To assess the registration accuracy, our target-free registration is compared to the manual registration results. Table 5.3 shows that the registration reaches about three centimeter level for positioning accuracy (∆X, ∆Y, ∆Z) and about a tenth of a degree level for angular accuracy (∆ω, ∆ω, ∆κ). Additionally, table 5.3 demonstrates that the distance error (∆D) is two centimeters. These results indicate an improvement in the registration accuracy compared to the result of the approach in section (5.1) and very close to the results presented in section (5.2). Obviously, the automatic registration provides accurate a priori alignment for further global registration step by ICP. However, the precision of the positions is highly dependent on the image acquisition geometry – in particular the image scale and the intersection angles. Advantageous in the proposed approach is that the integrated camera images in the SfM process can strengthen the relative geometry of the generated images. Especially in case that scans are acquired at considerably changed viewpoints e.g. wide baseline or provide very little overlap, and non-overlapping laser scans.
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Integration of Digital Photogrammetry and Terrestrial Laser Scanning for Cultural Heritage Data Recording

Integration of Digital Photogrammetry and Terrestrial Laser Scanning for Cultural Heritage Data Recording

As presented in chapter 4, our proposed general integration approach is applied to the dataset of the old farm house in order to assess the results. Therefore, 3 RGB images and 35 camera images have been employed for the SfM reconstruction. The orientations and the geometry from all used images were successfully derived (see figure 4.18). Then, the correspondences between the sparse point clouds and the laser data can be easily determined using the stored 3D data in the generated images. These correspondences allow the estimation of the Helmert transformation parameters in order to calculate the orienta- tions in absolute coordinate system. Furthermore, a procedure based on an iterative com- putation of the seven-parameters was accomplished in order to remove blunders or outliers. To assess the registration accuracy, our target-free registration is compared to the manual registration results. Table 5.3 shows that the registration reaches about three centimeter level for positioning accuracy (∆X, ∆Y, ∆Z) and about a tenth of a degree level for angular accuracy (∆ω, ∆ω, ∆κ). Additionally, table 5.3 demonstrates that the distance error (∆D) is two centimeters. These results indicate an improvement in the registration accuracy compared to the result of the approach in section (5.1) and very close to the results presented in section (5.2). Obviously, the automatic registration provides accurate a priori alignment for further global registration step by ICP. However, the precision of the positions is highly dependent on the image acquisition geometry – in particular the image scale and the intersection angles. Advantageous in the proposed approach is that the integrated camera images in the SfM process can strengthen the relative geometry of the generated images. Especially in case that scans are acquired at considerably changed viewpoints e.g. wide baseline or provide very little overlap, and non-overlapping laser scans.
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Nothegger, C. & Dorninger, P.: 3D Filtering of High-Resolution Terrestrial Laser Scanner Point Clouds for Cultural Heritage Documentation

Nothegger, C. & Dorninger, P.: 3D Filtering of High-Resolution Terrestrial Laser Scanner Point Clouds for Cultural Heritage Documentation

Documentation C lemens n othegger & P eter D orninger , Vienna Keywords: Point Processing, 3D Reconstruction, Visualization, Surface Normals Summary: Terrestrial Laserscanning has proved to be an important tool for documentation of cul- tural heritage objects. The latest generation of phase shift scanners features an extremely high scanning speed and improved accuracy, thus mak- ing it possible to capture surface detail in the mil- limetre range. This was previously the exclusive domain of close range triangulation scanners. Tri- angulation scanners, however, usually have a very limited field of view, thus requiring a large number of scans even for relatively small objects. This can be economically prohibitive. Phase shift scanners, on the other hand, produce huge amounts of data, which commonly used modelling software cannot handle properly. In this paper we present a chain of pre-processing steps which utilizes redundancy to reduce the amount of data without loosing detail at edges. We compare the results obtained by apply- ing our method with the results obtained with com- mercially available software packages. Since our method is computationally intensive, it is designed to be applied in a batch process, rather than interac- tively. Therefore, we present a method for estimat- ing necessary parameters. Furthermore we show that a global set of parameters is not suitable, since the point density varies significantly within a single scan and suggest a way to set these parameters adaptively.
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Integrating Digital Photogrammetry and Terrestrial Laser Scanning

Integrating Digital Photogrammetry and Terrestrial Laser Scanning

The approach starts with registering the available photos with the point cloud through interactive selection of corresponding points in the photos and in the point cloud. More details of the registration step are given in chapter 3. The collinearity equations are then employed to calculate the image coordinates for each point of the laser scanner point cloud. After that the image coordinates are transformed to the computer coordinates in pixels, see section 4.3.1 for more details of the used equations. The color components red, green and blue can be now extracted from the corresponding pixels to be fused with the geometric information. During the data fusion, no changes occur in the original point cloud coordinates. The only change occurs in the laser scanner files is the addition of the color components to the captured points coordinates. I.e. the accuracy of the point cloud coordinates is only dependent on the used laser scanner and its accuracy. On the other hand, locating the corresponding image pixel for each space point is depending mainly on the accuracy of the photo-geometry registration step and consequently on the photogrammetric solution. Details of a real application using the free camera positions approach is given in the next sub section.
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Abdel-Wahab, M., Wenzel, K. & Fritsch, D.: Automated and Accurate Orientation of Large Unordered Image Datasets for Close-Range Cultural heritage Data Recording

Abdel-Wahab, M., Wenzel, K. & Fritsch, D.: Automated and Accurate Orientation of Large Unordered Image Datasets for Close-Range Cultural heritage Data Recording

1 Introduction In the past few years, close-range and/or low- cost photogrammetry has become a focus of research especially since cameras enable data acquisition at very low prices, but with high geometric and radiometric quality. Therefore, low-cost multi-camera systems for eficient Summary: Reconstruction of image orientations and geometry from images is one of the basic tasks in photogrammetry and computer vision. A fully automated solution of this task in terrestrial appli- cations is still pending in case of large unordered image datasets especially for close-range and/or low-cost applications. Current solutions require high computational efforts for image networks with high complexity and diversity regarding acquisi- tion geometry. Unlike the methods suitable for landmark reconstruction from large-scale Internet image collections we focus on datasets where one cannot reduce the number of images without losing geometric information of the dataset. Within the paper, an automated pipeline for the reconstruction of reliable and precise camera orientation from un- ordered image datasets is presented. Results for a close-range cultural heritage application, the exam- ple of the Amsterdam project, are shown to demon- strate the performance of the presented pipeline for applications with low cost and high accuracy re- quirements.
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Kersten, T.P., Lindstaedt, M. &, Vogt, B.: Preserve the Past for the Future – Terrestrial Laser Scanning for the Documentation and Deformation Analysis of Easter Island's Moai

Kersten, T.P., Lindstaedt, M. &, Vogt, B.: Preserve the Past for the Future – Terrestrial Laser Scanning for the Documentation and Deformation Analysis of Easter Island's Moai

T homas P. K ersTen , m aren L indsTaedT , Hamburg & B urKhard V ogT , Bonn Keywords: Cultural Heritage, Deformation, Modelling, Monitoring, Point Cloud, TLS Summary: Since 1995, the Moai of Easter Island, the island’s huge volcanic rock statues, have been protected as UNESCO (United Nations Education- al, Scientific and Cultural Organization) World Cultural Heritage monuments, but so far, although the Moai are increasingly at risk of damage by ex- posure to wind and weather or by vandalism, they were never digitally documented and copied using an appropriate technique. The Department Geo- matics of the HafenCity University Hamburg (HCU) started the documentation of the Moai in 2007 in cooperation with the German Archaeologi- cal Institute (DAI), Bonn, when the first three Moai sites were recorded by terrestrial laser scanning. In 2008 eight more Moai complexes were scanned. The long term goal of the project is to document and to catalogue the remaining Moai as well as as- semble all relevant data into a Geographic Informa- tion System (GIS). Additionally, the analysis of possible deformation and the monitoring of conser- vation activities for selected Moai is an objective of the project. The recording of the statues by terres- trial laser scanning, the modelling into meshed 3D models and the texture mapping using high-resolu- tion imagery are described in this paper. Further- more, first tests for deformation analysis by 3D comparison of selected Moai were carried out. However, so far significant changes could not be detected for the short time interval of one year.
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Hernández-López, D., Cabrelles, M., Felipe-García, B. & Lerma, J.L.: Calibration and Direct Georeferencing Analysis of a Multi-Sensor System for Cultural Heritage Recording

Hernández-López, D., Cabrelles, M., Felipe-García, B. & Lerma, J.L.: Calibration and Direct Georeferencing Analysis of a Multi-Sensor System for Cultural Heritage Recording

This paper aims at an analysis of the perfor- mance of the overall system calibration of an image-based multi-sensor system for architec- tural/archaeological recording under scenari- os without disturbances of the magnetic ield. The GNSS will be used to estimate the posi- tion, while the low-cost MEMS-IMU will be used for orientation determination. The data acquisition will follow a stop-and-go strate- gy. This system might be used to survey other scenarios such as outcrops in geomorphology, large civil engineering structures and 3D city models namely in opened areas, among oth- ers. In section 2 the geometric relationship be- tween the GNSS, IMU and the two cameras is briely reviewed and particularized for the im- age-based multi-sensor system with two con- sumer-grade cameras. In section 3 the over- all system calibration results are described. In section 4 the performance of the direct georef- erencing approach with GNSS/MEMS-IMU and the indirect approach with bundle block adjustment when modelling a large archaeo- logical sculpture is analysed and discussed. A conclusion of the research carried out for cul- tural heritage recording is presented in sec- tion 5.
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Ontology-based classification of building types detected from airborne laser scanning data

Ontology-based classification of building types detected from airborne laser scanning data

paper. Data processing starts with the generation of DEM from the minimum values of last returns, and is followed by a slope calculation based on method proposed by [47], object refinements techniques such as pixel resizing, and the object reclassification based on the height difference between the object and its surrounding area. The final reclassification of the delineated objects is based on two distinct measures: area and recorded intensity. The first separates small objects from the rest of the group based on the initial presumption that elevated objects with an area smaller than 40 pixels represent vegetation left overs, noise, or other solid artifacts (car, truck, statue, etc.). The second measure utilizes the intensity value of the return signal in order to further refine our results and discard remaining artifacts. Based on a trial and error approach, a threshold value of 5900 digital number (DN) ([48,49]) was used to separate final building polygons (vector format) from the pre-classified, building candidates. The accuracy of the extracted buildings polygons was assessed by means of data completeness and correctness measures. The ground truth dataset was created using the DSM raster generated from the minimum values of last returns as a reference dataset. Visual inspection was performed and point features were added to each recognized building on the DSM raster. Spatial analysis of point-in-polygon was calculated, and based on this analysis the completeness and correctness indicators were derived for building object detection.
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Historical Replication Preserves Cultural Heritage

Historical Replication Preserves Cultural Heritage

- In Berlin, the Stadtschloss, which was built in 1442, was totally destructed by the Communist Regime in 1950, and newly erected beginning June 2013. Only the front copies the old castle, the structures behind are modern. - After World War II many German cities strongly, and sometime almost totally, destroyed by bombing, were reconstructed. Examples are Nuremberg (95% of whose old town was destructed), or Berlin (70 % of the city’s buildings were completely destructed). In 2018, medieval parts in Frankfurt am Main which no longer existed after the war, were completely reconstructed (Pietersen, 2006).
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Management of the Greek's ekistics and cultural heritage in Turkey

Management of the Greek's ekistics and cultural heritage in Turkey

integration of declared historical buildings in historical settlements, green buffer zones, architectural interventions in history and building facades, with the aim of including them in a mild touristic frame. We state that the implementation of these proposals involves the direct cooperation of bilateral or international and non-state factors (NGOs, academic institutions, private companies, associations of the professions, etc.) by signing the relevant agenda. At this extent, we believe that support and joint research projects of bilateral interest contribute in promotion of cooperation with Turkey as well as the notice or architectural competitions of international repute (the ongoing research program «Greek Communities Cultural and Ekistics Heritage in Asia Minor (17th-20th centuries) », the current research collaboration of Ecumenical Patriarchate and Aristotle University of Thessaloniki for building restoration and renovation of Halki’s School, the oldest research program of the NTUA "Urban - Architecture and Photographic Survey of the settlement elements of the Greeks in Istanbul").
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Guidelines: Interpretation of European Cultural Heritage in Tourism

Guidelines: Interpretation of European Cultural Heritage in Tourism

The regional affiliation is a distinguishing feature of different culinary systems within a country. Regional cultural areas are used and worked on by the local population due to specific natural conditions (e.g. agriculture). In this way, specific regional culinary networks are created (“foodways”), which, among other things, highlight the special features of the respective region (Long, 2004). Time can also be used as a differentiating feature. Foreign food and beverages from both the past and the future can be considered (Long 2004, p. 26). By means of historical sources, for example, unknown culinary specialties and customs can be experienced (e.g. historically transmitted recipes and cookbooks). Further access is provided by museums that supply knowledge on the production, storage, distribution, preparation and reception of food and beverages, among other things. These knowledge resources can be implemented in the context of tourist attractions (e.g. tastings of historical food and drink or “living history sites”; Long, 2004). In addition to this, however, time can also make reference to foreign culinary specialties with regard to holidays / religious or cultural festivals (food: e.g. gingerbread; preparation methods: e.g. dyeing of Easter eggs; consumer behaviour: e.g. family dinners on certain holidays; Long; 2004). Some cultural factors can influence eating habits within a given culture. For example, religion can affect food preferences through religious bans or certain preparation regulations. For instance, at church festivals and events, certain foods and drinks are exploited to impart knowledge about the religion concerned (Long 2004). Ethos can manifest itself in terms of nutrition through value-driven consumption behaviour (e.g. veganism, organic food). Also, tourists can experience these nutrition forms directly (e.g. vegan restaurants). The social class can also be consulted if individual groups establish culinary networks (Long, 2004). An example is the culinary customs of the working class in the south of the USA or “mountain food” (unusual ingredients such as cornmeal and date plums in the cuisine of the population in the Appalachian, USA; Long, 2004).
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The contribution of the EXCELSIOR Project for cultural heritage

The contribution of the EXCELSIOR Project for cultural heritage

project is currently integrated within the EXCELSIOR project, whose goal is the development of the Eratosthenes Centre of Excellence (ECoE) . The project focuses on conducting basic and applied research and innovation in the areas of the integrated use of remote sensing and space-based techniques for monitoring the environment. The integration of novel EO, space and ground-based integrated technologies, can contribute to a more sustainable and systematic monitoring of the environment, the timely detection of societal risks/threats and the growth of vital economic sectors. The establishment of the Centre of Excellence in 2020 provides the infrastructure and experts necessary to conduct state-of-the-art research and innovation in the areas of the integrated use of remote sensing and space-based techniques for cultural heritage applications within Cyprus. Strategic Partners of the ECoE, such as DLR and NOA, will also provide capacity building for cultural heritage in order to facilitate state-of-the-art research and applications in cultural heritage.
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An educational setup for a Laser Induced Breakdown Spectroscopy (LIBS) system and its usage for the characterization of cultural heritage objects

An educational setup for a Laser Induced Breakdown Spectroscopy (LIBS) system and its usage for the characterization of cultural heritage objects

In LIBS, a high power laser pulse is focused onto the surface of the sample. Enough energy is delivered to a small volume to not only vaporize the material but to break all chemical bonds and ionize the elements present creating a small plasma plume. As the spe- cies in the plasma relax they emit at a characteristic wavelength. The spectrum evolves over time, be- coming more distinct after several micro seconds. From this emission spectrum the constituent ele- ments of the sample can be determined. For the first few hundred ns after ablation the spectrum is domi- nated by continuum emission. Electron ion collisions
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Hacking Cultural Heritage : the Hackathon as a Method for Heritage Interpretation

Hacking Cultural Heritage : the Hackathon as a Method for Heritage Interpretation

communities by appropriating technology. In the 1950s, the first hackers and their technological innovations were driven by a set of principles that influenced many cultures, movements, philosophies, and initiatives that were still to come into existence, such as the Open-source Movement and Wikipedia. Besides giving a historical context to hacking, the chapter also examines the origins of Hackathons as events capable of aggregating communities and intensively focusing their abilities to come up with ingenious solutions to technological problems. Not only hacking, but also Hackathons are based on the same set of principles that enable them to occur, such as free information, decentralization, meritocracy, and the belief that the computer could be used as a tool to change old and create new worlds. Currently, the Cultural Heritage Sector has also appropriated from hacking principles and Hackathons as a way to regaining relevance in a fast-paced and increasingly digitized society, because Hackathons are powerful strategies to advance innovation not only, but also in the Cultural Heritage Sector. Hackathons invigorate the digital and participatory strategies of Cultural Heritage Institutions. Furthermore, these events offer numerous advantages not only to institutions, but also to affiliated communities and the institutions’ audiences. The chapter not only discusses about these advantages, but also provides a closer look at the structures of Hackathons and presents concrete examples of these events and their outcomes in the Cultural Heritage Sector.
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An educational setup for a Laser Induced Breakdown Spectroscopy (LIBS) system and its usage for the characterization of cultural heritage objects

An educational setup for a Laser Induced Breakdown Spectroscopy (LIBS) system and its usage for the characterization of cultural heritage objects

An experimental setup for laser induced breakdown spectroscopy (LIBS) has been developed for educational purposes, to be used in the physics curriculum of science students and of students who are specializing in the field of cultural heritage. The setup comprises basically a Q-switched Nd:YAG laser and a fiber optic spectrometer. All components were already existing equipment at the physics laboratories at the TEI of Athens, so that they could be assembled in-house to a considerably economic LIBS setup. The proposed laboratory exercises are focused on one hand on imparting the knowledge about physical principles and phenomena associated with the creation of plasma and the radiation processes. On the other hand the students will be trained in the operation and handling the actual analytical process, in terms of specific applications. Various parameters are examined, concerning the laser-matter interaction and the process issues, such as calibration, interpretation of spectra and evaluation of results. Exemplary measurements as an autonomous learning and teaching module were implemented, demonstrating the qualitative and quantitative analysis of various materials typically associated with cultural heritage objects, such as metal standards and original objects and replicas of mural paintings.
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Mannen unstable rock slope (Møre og Romsdal): Logging of borehole and drill core KH-01-10, geomorphologic digital elevation model interpretation and displacement analysis by terrestrial laser scanning

Mannen unstable rock slope (Møre og Romsdal): Logging of borehole and drill core KH-01-10, geomorphologic digital elevation model interpretation and displacement analysis by terrestrial laser scanning

induced deformation occurred at the edge of the plateau, where a several Mm 3 large block already moved down-slope by approximately 20 m (Figure 2). Displacement rates measured by yearly differential Global Positioning System (dGPS) reach 4–5 cm/year for the upper part of the unstable rock slope. Based on these displacement measurements, the past slope displacement and the high potential consequences of a rock avalanche from Mannen (see Dahle et al., 2008, 2010), the instability has been classified as a high-risk object in 2009. From that time, instrumentation for permanent monitoring is set out under the authority of the Åknes-Tafjord Early-Warning Centre (Stranda, Møre og Romsdal). In parallel, further geological investigations were performed in order to better constrain the gravitational deformation. They comprise the geological logging of a 138 m long core vertically drilled in the unstable rock slope, the borehole logging by an optical televiewer, the analysis of a 1 m resolution digital elevation model acquired by NGU in 2009 (cf. Farsund, 2010, 2011) and a displacement analysis by terrestrial laser scanning. These investigations made in 2010 and 2011 are presented in this report.
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Analysis of digital terrestrial television development in Taiwan

Analysis of digital terrestrial television development in Taiwan

France The television digitalization in France was launched in 2005. The Conseil Supérieur de l’Audiovisuel (CSA) declared the operators who were responsible for the switchover. The digital switchover process started in October 2009 and involved 24 regions in mainland France and 11 overseas territories. Digital switchover did not only happen in mainland France, but also in the overseas territories and departments. The last region in France to switch off analogue was Languedoc-Roussillon, and in overseas France French Guyana, Martinique, Guadeloupe and Mayotte. The analog switch-off was accomplished in France by 2011(Broadband TV News, 2011). The head of the CSA, Michel Boyon, issued his recommendations to the Prime Minister on the future of the importance of high-definition (HD) DTT platform and called for the introduction of DVB-T2. There is no timetable for the launch of DVB- T2 in France, but CSA president Michel Boyon hinted that this could be at the end of 2015or the beginning of 2016 (Broadband TV News, 2011).
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Heritage learning objects: theoretical and practical analysis of cultural heritage data modelling concepts in context of educational purposes / by Nina Carola Leiter, BA

Heritage learning objects: theoretical and practical analysis of cultural heritage data modelling concepts in context of educational purposes / by Nina Carola Leiter, BA

Within this Masters programme, at the Karl-Franzens-University of Graz I gained expertise within the areas of data modelling, analysis and documentation as well as long term preserva- tion in the field of Digital Humanities. Furthermore, I got the possibility to obtain knowledge offered by the University of Turku, Finland, with main emphasis on e-Learning in the field of Humanities with a special focus on the pedagogical and technological aspects when using online platforms as a teaching and learning tool. To get an even better and profound under- standing of the information technology, in general and especially for my major, I spent one semester at INHA University, South Korea, where I had the possibility to acquire new skills and knowledge of computer science. Besides my Master’s degree I also worked at the IT De- partment at the Karl-Franzens-University of Graz, where I was responsible for the administra- tion and support for e-Learning platforms as well as an online examination and online survey tool. This way, besides the theoretical input I got from my studies, I got an insight into the practical part of the use of e-Learning tools and platforms within higher education. Fascinated by this topic I wanted to delve into this subject area and try to combine the expertise of the mentioned universities and my personal interests in this paper.
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Accessible digital documentary heritage : guidelines for the preparation of documentary heritage in accessible formats for persons with disabilities

Accessible digital documentary heritage : guidelines for the preparation of documentary heritage in accessible formats for persons with disabilities

Captions are text versions of the spoken word presented within multimedia. Though captioning is primarily intended for those who cannot hear the audio, it has also been found to help those that can hear audio content, those who may not be fluent in the language in which the audio is presented, those for whom the language spoken is not their primary language, etc. It is important that the captions are synchronized with the audio, and that they offer a true representation of spoken text and sounds. The captions must also be easily legible in terms of font size and colour contrast. Offering a selection of font sizes and colour/contrast for the captions is the best option, as this allows users to set the captions to suit their specific needs. Captions can be either closed or open. Closed captions can be turned on or off, whereas open captions are always visible. Open captions include the same text as closed captions, but are permanently embedded into the video picture, and cannot typically be turned off. Open captions give content creators more control over how the captions will appear (size, color, font, location, and timing), however, it can be more time consuming and expensive to produce than closed captions. Closed captions are most common, utilizing functionality within video players and browsers to display closed captions on top of or immediately below the video area. The most common web multimedia formats already support captioning.
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Museen, Covid-19 und digital heritage

Museen, Covid-19 und digital heritage

Vor allem ermöglichen sie einen weltweiten Zugang zu musealen Sammlungen in Form von Objektdaten, Bild- und Audiomaterial sowie ergänzender Informationen, deren Tiefe und Präsentationsweise idealiter an unterschiedliche Interessen und Nutzer-/Altersgruppen angepasst sein könnte. Aus den Ergebnissen aller drei Umfragen kann man nun den wenig überraschenden Schluss ziehen, dass Covid-19 grundsätzlich zum kurzfristigen Ausbau online verfügbarer Angebote durch Museen beigetragen hat. Das Angebotsspektrum scheint primär an potentiellen Besucher*innen orientiert zu sein, weniger an der Forschung. Die ICOM-Umfrage sowie die kleine Umfrage des Verfassers lassen dabei strukturelle Defizite in Hinblick auf die Personal- und Finanzressourcen sowie Urheberrechtsprobleme erkennen. Für die Zukunft wäre es - entsprechend der Handlungsempfehlung des NEMO-Papiers - wichtig umfassend in den Bereich „digital cultural heritage“ zu investieren. Damit diese Investitionen nachhaltig sind, bedarf es einer übergeordneten „digitalen Strategie“, in deren Rahmen „[…] ‚Originale Erleben‘ und digitale Welten ausdrücklich nicht im Widerspruch stehen: Strategische Maßnahmen ermöglichen die bewusste Nutzung der erweiterten Potenziale im digitalen Zeitalter und führen zu den Originalen hin[.]“, wie es in der „Digitalen Strategie“ der Bayerischen Staatsgemäldesammlungen heißt. 66 Einer Strategie, die darüber hinaus womöglich nicht nur die
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