{"id":377,"date":"2016-09-27T12:00:42","date_gmt":"2016-09-27T10:00:42","guid":{"rendered":"http:\/\/www.visual-humanities.uni-wuerzburg.de\/wordpress\/?p=377"},"modified":"2018-04-16T11:06:37","modified_gmt":"2018-04-16T09:06:37","slug":"pressemitteilung","status":"publish","type":"post","link":"http:\/\/www.urbanhistory4d.org\/wordpress\/pressemitteilung\/","title":{"rendered":"Press release"},"content":{"rendered":"

The press office of the Julius-Maximilians-Universit\u00e4t W\u00fcrzburg has published a press release<\/a> at the start of the project.
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 <\/p>\n

A photographic trip through time and space<\/strong><\/span><\/p>\n

To visualize a city\u2019s development with the aid of old photographs: This is the aim of a new research project, which is at home in W\u00fcrzburg and Dresden. Both art historians and computer scientists are working on this together.<\/strong>
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\n It is the aim of the new research project to link images of Deutsche Fotothek\u2019s collection spatially and chronologically, and thus making them accessible for other interested parties. Views of the street Prager Stra\u00dfe in Dresden – shown here in a photograph from 1908, with a North-Eastern view towards the hotel \u201cEurop\u00e4ischer Hof\u201d – are playing a major role in this.<\/p>\n

More than 1.8 million digitalized photographs, paintings, drawings, maps and architectural drafts are in stock at Deutsche Fotothek, where they can be accessed by users worldwide. Many of them display city views and buildings of Dresden \u2013 from 1850 to today. This pool of images is of special interest to scientists from W\u00fcrzburg and Dresden; their new research project aims at linking these images spatially and chronologically, and thus making them accessible for other interested parties. \u201cHistStadt4D \u2013 multimodal access to historical image repositories\u201d \u2013 this is the name of the project, which will be supported by the Federal Ministry of Education and Research with 2 million Euros over the next four years.<\/p>\n

\u201eOur projects links two different perspectives: those of Humanities and of Informatics\u201c, says computer scientist Dr. Florian Niebling. Representing the Informatics perspective, he leads the junior research group HistStadt4D at Erich Latoschik\u2019s chair for Computer Science IX at W\u00fcrzburg University.<\/p>\n

The computer scientists\u2018 contribution<\/span><\/strong><\/p>\n

The Informatics perspective: \u201e Those searching for images at Deutsche Fotothek can today use free text search in a browser based interface\u201c, says Florian Niebling. Whether the right hits are made depends a lot on the quality of the metadata the images are tagged with. This quality is often lacking, however, especially in photographs that have not been explored yet. They might lack information about the photographer, the year or the place the photo was taken, which is why they might not turn into a search hit.<\/p>\n

Niebling and his PhD students want to process these images for a spatial search. As the computer scientist says: \u201cWe want the photographs to be automatically linked in 3D in a city model\u201d. This will enable users of the Fotothek to virtually walk through a model of Dresden and take closer views of the images that are saved in the archive for the user\u2019s specific location. In addition, a fourth dimension \u2013 time \u2013 is to enable research on street and building development.<\/p>\n

Information through Augmented Reality<\/span><\/strong><\/p>\n

An improved search function is only one aspect the information scientists will work on in the research project. Another aspect is the information transfer. \u201cToday the information about a city and its development are usually transferred by means of historically oriented exhibitions\u201d, according to Niebling. Together with his junior research team he wants to open up a new way \u2013 Augmented Reality.<\/p>\n

With the help of an application developed by the computer scientists, visitors in Dresden will, amongst others, be able to place their tablet or smart phone in front of a building, such as Zwinger. On the display they will then receive information about the pictured details of the world famous baroque building, can regard historical views, and follow the chronological development on a timeline.<\/p>\n

The keyword \u201eDresden-Altstadt\u201c gives 11,143 hits in the Deutsche Fotothek database. Hundreds of photographs exist for many of the buildings \u2013 taken from varying locations and angles. From the computer scientists\u2019 point of view, this amount of data is a unique treasure. Their plan is to take the 2D photos and generate a 3D model with the help of their own software. First on-site tests with a modern camera have shown that 50 photos, taken semi-circularly, are sufficient to generate such a model while keeping a close attention to detail. Whether the historical treasure pool of images is sufficient is yet to be seen. \u201cMany of the historical photos are blurred with little contrast\u201d, according to Florian Niebling. This makes the reconstruction more difficult.<\/p>\n

The art historians\u2018 contribution<\/strong><\/span><\/p>\n

The historical science perspective of the project is represented by art historian professor Stefan B\u00fcrger and his colleague Dr. Kristina Friedrichs. The centre of their interest is the interaction of architecture, human and image, or \u2013 in Stefan B\u00fcrger\u2019s words \u2013 the questions: \u201cHow does city space affect people, and how does the image of the city move in their heads?\u201d<\/p>\n

Naturally, the art historian also wants to know how certain buildings in Dresden have changed in the course of time. The city on the river Elbe has a lot to offer in this respect, covering the building activities of the 19th and early 20th century, the destruction during World War II, the reconstruction and the new development of vitally situated successions of houses in historical style after 1989.<\/p>\n

Research on Kronentor gate and Prager Stra\u00dfe
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\n Using photographs from the archive of Deutsche Fotothek, the scientists want to visualize the changes on a timeline \u2013 3D if possible. Initially, they are concentrating on two objects: the Zwinger Kronentor gate and the street Prager Stra\u00dfe, a prominent, square-like street that was built between 1851 and 1853 to directly link the inner city and the main train station.<\/p>\n

First, suitable photographs for this project need to be found in the Fotothek\u2019s rich collection. This is Kristina Friedrichs\u2019 current task. Regarding the Kronentor gate, Stefan B\u00fcrger is confident that a 3D reconstruction, as planned by the information scientists, will be possible. \u201cMany images exist of the gate.\u201d The case of Prager Stra\u00dfe is different. \u201cIt is possible that no photographs of the whole street exist, only of individual impressive views\u201d, according to B\u00fcrger. Moreover, he is keen to find out whether the method is suitable for large spaces, and how many images would be needed.<\/p>\n

Photographs defined the image<\/strong><\/span><\/p>\n

Even if only photos of impressive views exist, not of unattractive parts, this is of interest to the art historians. \u201cAn image is the result of a certain behaviour and informs about city identities\u201d, says B\u00fcrger. Frequently photographed views can define the image of a city and even influence its development. A good example is the reconstruction of the Church of Our Lady between 1995 and 2005. \u201cThe visibility of its dome was a frequently used argument. It was to complete the image of the city.”<\/p>\n

How often are images taken of a certain object? Which locations are preferred? Which intention is behind? These and other questions will hopefully be answered in the course of this research project. Though this is not necessarily the primary goal. \u201cAt the moment we are aiming at developing a tool with the help of computer science. We want to make sure that this tool will be usable for us and be transferable to other applications in the long run\u201d, says Stefan B\u00fcrger.<\/p>\n

Regardless of how the project will end, the team work across disciplines is a big benefit: \u201cWe are learning a lot from each other. This is a great success!\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"

The press office of the Julius-Maximilians-Universit\u00e4t W\u00fcrzburg has published a press release at the start of the project.   A photographic trip through time and space To visualize a city\u2019s development with the aid of old photographs: This is the aim of a new research project, which is at home…<\/p>\n

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