Klemt M.,University of Stuttgart |
Binjung B.,IKT |
Geier S.,University of Stuttgart |
Bonten C.,University of Stuttgart
Kunststoffe International | Year: 2011
A completely novel heating concept is presented that makes use of the electrical resistance of organic sheet for the efficient and more economical production of structural parts. Weight minimization of individual components and systems with the aim of reducing the overall weight of a vehicle, and thereby its carbon dioxide emissions requires light-weight construction materials that are suitable for inexpensive mass production. Because of its special properties and outstanding design potential, organic sheet, as a plastic hybrid material, is increasingly being used in automotive engineering and in the sport, safety and aerospace industries. Organic sheets are thermoformed into three-dimensional parts in a mass-production process. This is performed by heating the thermoplastic matrix, forming the organic sheet and consolidating again by cooling.
The Assamiidae (Opiliones: Assamiidae) from Río Muni (Equatorial Guinea), with the description of eight new species [Los assamiidae (Opiliones: Assamiidae) de Río Muni (Guinea Ecuatorial), con la descripción de ocho nuevas especies]
Santos R.,IKT |
Prieto C.E.,University of the Basque Country
Revista de Biologia Tropical | Year: 2010
The Opiliones from Equatorial Guinea's Continental Region (formerly Río Muni) had not been studied previously. A collection made in 1996 produced 22 species, ten of which belong to the Assamiidae and are studied herein: Chilon robustus and Mbinia xenophora gen. nov., sp. nov. (Erecinae); Podauchenius longipes and Rhabdopygus funilignorum sp. nov. (Hypoxestinae); Ayenea trimaculata gen. nov., sp. nov., Montalenia forficula gen. nov., sp. nov. and Niefanga spinosa gen. nov., sp. nov. (Polycoryphinae); Binderia longipes sp. nov., Seuthes inermis sp. nov. and Seuthessus coriscanus sp. nov. (Selencinae). We consider Ayenea, Montalenia and Niefanga an informal suprageneric group characterized by two orifices on the dorsal side of the penis and a thick genital operculum. Identification keys to species of these taxa are provided, together with color photographs of both sexes (except the female of Binderia longipes). Eight of the ten assamiid species have been recorded from the Monte Alén National Park; only two selencine species (apparently coastal) are absent.
The scientists from the Max Planck Institute for Informatics and Saarland University will present the new technology at the Cebit Computer Fair in Hannover from 14 to 18 March (Hall 6, Stand D 28). When Brad Pitt lives his life backwards in the film "The Curious Case of Benjamin Button" and morphs from an old man to a small child, it wasn't just a matter of using a lot of make-up. Every single scene was edited on the computer in order to animate Brad Pitt's face extremely realistically and in a way that was appropriate to his age. "Sometimes they take several weeks in the big film studios to work on scenes five seconds long in order to reproduce an actor's appearance and the proportions of their face and body in photo-realistic quality. A lot of the touching-up on the computer is still done by hand", says Christian Theobalt, Leader of the "Graphics, Vision and Video" Group at the Max Planck Institute in Saarbruecken and Professor of Informatics at Saarland University. Film-makers use the same technology to insert fantasy figures such as zombies, orks or fauns into films and give them sad expressions or magic laugh lines around their eyes. Together with his research group, Christian Theobalt now wants to significantly speed up the process. "One challenge is that we perceive actors' facial expressions very precisely and we notice immediately if a single blink doesn't look authentic or the mouth doesn't open in time to the words spoken in the scene", Theobalt explains. To animate a face in complete detail, an exact three-dimensional model of the face is required, referred to as a face rig in the industry jargon. The lighting and reflections of the scene are also incorporated. The face model can be given different expressions in a mathematical process. "We can generate this face rig entirely on the basis of recordings made by a single standard video camera. We use mathematical methods to estimate the parameters needed to record all the details of the face rig. They not only include the facial geometry, meaning the shape of the surfaces, but also the reflective characteristics and lighting of the scene", the computer scientist elaborates. These details were sufficient for their method to faithfully reconstruct an individual face on the computer and, for example, to animate it naturally with laugh lines. "As a model of the face, it works like a complete face rig which we can give various expressions by modifying its parameters", says Theobalt. The algorithm developed by his team already extracts information on numerous expressions which show different emotions. "This means we can decide at the computer whether the actor or avatar is to look happy or contemplative and we can give them a level of detail in their facial expression which wasn't there when the scene was shot", says the researcher from Saarbruecken. To date, special effects companies working in the film industry have expended a great deal of effort to achieve the same result. "Today the proportions of a face are reconstructed with the aid of scanners and multi-camera systems. To this end, you often need complicated specially controlled lighting setups", as Pablo Garrido, one of Christian Theobalt's PhD students at Saarland University explains. Precisely such a system was recently set up in the White House to produce a 3D model for a bust of Barack Obama. This could have been accomplished far more easily with the Saarbruecken technology. "With previous methods, you also needed precisely choreographed facial movements, in other words shots of the particular actor showing pleasure, anger or annoyance in their faces, for example", Garrido explains. The researchers from Saarbruecken recently themselves demonstrated how 3D face models can be generated with a video or depth camera, also in real time. However, these other models are nothing like as detailed as the ones produced by this new method. "We can work with any output from a normal video camera. Even an old recording where you can see a conversation, for example, is enough for us to model the face precisely and animate it", the computer scientist states. You can even use the reconstructed model to fit the movements of an actor's mouth in a dubbed film to the new words spoken. Technology is improving communication with and through avatars The technique is not only of interest to the film industry but can also help to give avatars in the virtual world, your personal assistant on the net or virtual interlocutors in future telepresence applications, a realistic, personal face. "Our technology can ensure that people feel more at ease when communicating with and through avatars", says Theobalt. To achieve this photo-realistic facial reconstruction, the researcher and his team had to solve demanding scientific problems at the intersection of computer graphics and computer vision. The underlying methods for measuring deformable surfaces from monocular video can also be used in other areas, for example in robotics, autonomous systems or measurements in mechanical engineering. Pablo Garrido and Christian Theobalt, together with their co-authors Michael Zollhoefer, Dan Casas, Levi Valgaerts, Kiran Varanasi and Patrick Perez will present the results of their research in the most important specialist publication for computer graphics (ACM Transactions on Graphics) and at Siggraph 2016. Between 14 and 18 March, the scientists will showcase the technology at CeBIT in Hannover on the Saarland stand (Hall 6, Stand D 28). Theobalt's working group has also spawned the start-up company The Captury. This company has developed a technique for real-time marker-less full-body motion capture from multi-view video of general scenes. It thus gets rid of the special marker suits needed in previous motion capture systems. This technology is being used in computer animation but also in medicine, ergonomic research, sports science and in the factory of the future where the interacting movements of industrial workers and robots have to be recorded. For this technology, The Captury won one of the main prizes in the start-up competition, IKT Innovativ, at CeBIT 2013. Explore further: Capturing movements of actors and athletes in real time with conventional video cameras
Formisano B.R.,University of Stuttgart |
Gottermann S.,IKT |
Habich D.,IKT |
Marmetschke M.,Schwartz GmbH |
And 2 more authors.
Kunststoffe International | Year: 2015
Cast polyamide scrap is currently converted into energy. It does, however, have great potential in the form of reclaimed material. As part of the recycling process, granulated cast PA scrap is mixed with additives and compounded in a twin-screw extruder. This approach produces high-quality extrusion grades of polyamide characterized by high stiffness and strength.
Large data centres are the major checkpoints of the Internet. They save, process and forward business data and private information. Today's data centres have huge computing and storage capacities and are usually located in remote places far away from their customers with most facilities being operated by non-European companies. Already today, these data centres have a lot to cope with and the end is not in sight. They have to serve an increasing number of smart phones, tablet computers and other terminal devices causing the associated Internet traffic to grow continuously. New Internet apps in the environment of industrial and health systems for example contribute to this trend. "If we want data centres to continue operating in a secure, flexible, reliable and instantaneous manner, telecommunication networks and IT will have to be consolidated," says Professor of Computer Science Phuoc Tran-Gia, Chair of the Department for Communication Networks at the Julius-Maximilians-Universität Würzburg (JMU) in Bavaria, Germany. "Also, we have to decentralize the computing and storage capacities and take them closer to end users." A goal the new research consortium SENDATE (SEcure Networking for a DATa center cloud in Europe) is pursuing: Its member teams are seeking to develop a network architecture and technologies for secure and flexible distributed data centres. "Innovative technologies and approaches such as the virtualization of network functions (NFV) combined with software-defined networking (SDN) establish the basis for this," the professor explains. The project is managed by Nokia Solutions and Networks GmbH & Co. KG. Set to run until February 2019, it has a research budget of more than EUR 72 million. The project is financed by various research sponsors within the scope of the Celtic-Plus IKT research cluster. The SENDATE-PLANETS subproject involves a JMU research team from the Department of Communication Networks which develops security mechanisms for NFV/SDN networks. The scientists also investigate the development, operation and optimization of virtual network functions and their positioning in distributed data centres. The Federal Ministry of Education and Research funds the work with a little over half a million euros. Software Defined Networking (SDN) enables implementing flexible, virtualized and programmable networks in the Internet of the future. To study the possibilities and performance of network management using SDN, Tran-Gias's department also collaborates with InfoSim GmbH & Co. KG in the SDN-Perf project (Performance of SDN). The medium-sized company located in Würzburg has specialized in developing network management software. The Bavarian research programme IKT funds the cooperation project with around EUR 230,000 for three years. Explore further: Solving the internet capacity crunch: First demonstration of a multicore fiber network