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Institution

Academy of Media Arts Cologne

EducationCologne, Germany
About: Academy of Media Arts Cologne is a education organization based out in Cologne, Germany. It is known for research contribution in the topics: Computer facial animation & Natural user interface. The organization has 51 authors who have published 59 publications receiving 860 citations.


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Journal ArticleDOI
TL;DR: A three-state technique for reliable displacement estimation with fractional-pel accuracy is introduced, based on phase correlation, and for motion-compensation with block size of 16 pels*16 pels, 1/4- Pel accuracy appears to be sufficient for broadcast TV signals, whereas for videophone signals,1/2-pel Accuracy is desirable.
Abstract: The effect of fractional-pel accuracy on the efficiency of motion-compensating predictors is studied using various spatial prediction/interpolation filters. In model calculations, the power spectral density of the prediction error is related to the probability density function of the displacement error. Prediction can be improved both by higher accuracy of motion-compensation and by spatial Wiener filtering in the predictor. Beyond a critical accuracy, the possibility of further improving prediction by more accurate motion-compensation is small. Experiments with videophone signals and with broadcast TV signals confirm these model calculations. Sinc-interpolation, bilinear interpolation, and Wiener filtering are compared at integer-pel, 1/2-pel, 1/4-pel, and 1/8-pel accuracies. A three-state technique for reliable displacement estimation with fractional-pel accuracy is introduced. It is based on phase correlation. For motion-compensation with block size of 16 pels*16 pels, 1/4-pel accuracy appears to be sufficient for broadcast TV signals, whereas for videophone signals, 1/2-pel accuracy is desirable. >

346 citations

Journal ArticleDOI
TL;DR: The spatio-temporal frequency response of the human visual system and the influence of eye movements are discussed, and subthreshold summation suggests a local rather than a global distortion measure.

57 citations

Proceedings ArticleDOI
28 Apr 2007
TL;DR: BluetunA is an application running on Bluetooth-enabled mobile phones that allows users to share information about their favourite music, and people can select a list of favourite artists or songs and see who else in proximity share their taste in music.
Abstract: BluetunA is an application running on Bluetooth-enabled mobile phones that allows users to share information about their favourite music. With BluetunA people can select a list of favourite artists or songs and see who else in proximity share their taste in music, or they can search whom nearby has selected specific artists, and check out what other preferences in terms of music these people have. Moreover, BluetunA users can exchange messages with each other over Bluetooth, connect to the Internet to download their profile and obtain music recommendations from Last. fm website. To enrich this experience, people can interact with each other through their mobile phones while sitting in cafes by accessing the BluetunA hotspots and a wider range of music sharing options.

45 citations

Journal ArticleDOI
TL;DR: A technique for the automatic adaptation of a canonical facial model to data obtained by a 3D laser scanner and that takes into consideration the requirements for the animation of facial expressions is described.
Abstract: This paper describes a technique for the automatic adaptation of a canonical facial model to data obtained by a 3D laser scanner. The facial model is a B-spline surface with 13×16 control points. We introduce a technique by which this canonical model is fit to the scanned data and that takes into consideration the requirements for the animation of facial expressions. The animation of facial expressions is based on the facial action coding system (FACS). Using B-splines in combination with FACS, we automatically create the impression of a moving skin. To increase the realism of the animation we map textural information onto the B-spline surface.

45 citations

Journal ArticleDOI
TL;DR: It is shown case that LIVE TV broadcasting format could achieve a range of significant advantages and introduce significant intelligence in terms of content analysis and behavior analysis etc. to further improve the quality of services based on the fundamental concept of LIVE project.
Abstract: In this paper, we report recent research activities under the integrated project, Live Staging of Media Events (LIVE), which is funded under European Framework-6 Programme, and illustrate how a new LIVE TV broadcasting and content production concept can be introduced to improve the existing TV broadcasting services. In comparison with existing TV content production technologies, we show case that LIVE TV broadcasting format could achieve a range of significant advantages, which can be highlighted as: (i) real-time interaction between TV content production team and viewers to ensure the best possible entertainment experiences and to allow viewers not only to view but also to participate, to influence and to control; (ii) the traditional concept of TV content director can be changed to a TV content conductor, where live TV broadcasting can be conducted on real-time bases and existing content materials can be conducted into multi-streams of TV broadcasting, providing variety of choices to allow the audience to make their own preferences in watching TV programs; (iii) introduction of significant intelligence in terms of content analysis and behavior analysis etc. to further improve the quality of services based on the fundamental concept of LIVE project. When tested under field trials for 2008 Olympic Games by ORF, the developed LIVE system has illustrated great potential as well as significant promises to improve the TV broadcasting services not only in terms of the interaction formats, but also in terms of viewing experiences as well as the style of content productions and preparations.

35 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20222
20201
20192
20181
20162
20141