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For the collaborative work in Virtual Reality Systems gestures and emotions of the involved persons need to be visualized exactly and exchanged in near real-time. Using point clouds for the representation of avatars guarantees a high level of detail, but processing these huge data set in real-time requires high computational resources. Furthermore, the exchange of avatars need a software-independent...
This paper presents a simple and effective method to increase the light output in passive stereoscopic projection environments. We realized a processing chain with Liquid Crystal on Silicon (LCoS) projectors, taking advantage of the already polarized projector light. Minimizing light losses could be achieved with retarders instead of polarizers in the optical path in combination with changes in the...
Flexible signal processing on programmable platforms are increasingly important for consumer electronic applications. Scalable video algorithms (SVAs) using the novel principle of priority processing guarantee real-time performance on programmable platforms, even with limited resources. Dynamic resource allocation is required to maximize the overall output quality of independent, competing priority...
Flexible signal processing on programmable platforms are increasingly important for consumer electronic applications and others. Scalable video algorithms (SVAs) using novel priority processing can guarantee real-time performance on programmable platforms even with limited resources. Dynamic resource allocation is required to maximize the overall output quality of independent, competing priority processing...
Software defined radios (SDRs) are increasingly attractive to replace common hardware solutions. Using desktop computers for executing software defined radio receivers in real time is not common or even achievable due to the huge amount of processing resources required. In this paper we present some measurement results using an already available general purpose graphics processing unit (GPGPU) inside...
Software Defined Radios (SDRs) are increasingly attractive to replace common hardware solutions. Current SDRs are mostly part of communication systems using hardware front ends containing DSPs or FPGAs. Processing on CPUs only is not common due to the huge amount of processing resources required. Most current CPUs are not able to handle this. The goal is to minimize receiver specific hardware components...
Multi-media-systems (MMS) increasingly use software solutions for signal processing instead of dedicated hardware. Scalable video algorithms (SVA) using novel priority processing can guarantee real-time performance on programmable platforms even with limited resources. In this paper we propose a scalable de-interlacing algorithm with priority processing. The de-interlacer adapts to the available hardware...
The use of complementary and alternative medicine such as herbal medicine is common among Irritable bowel syndrome (IBS) patients. The aim of this study was to determine the efficacy of two herbal remedies used in the treatment of IBS.IBS patients were randomly assigned in this randomised, doubleblind, placebo-controlled trial to one of three treatment groups: 1.) Curcuma xanthorriza 60mg daily (curcuma...
Software defined radios (SDR) can be found in every area of wireless signal processing. SDRs realized so far are mostly part of communication technology, including audio broadcast receivers. Image- and video processing in SDRs is not common due to the fact that this type of real-time application requires a huge amount of processing resources. It can be foreseen that SDRs for video processing will...
For future multi-media-systems (MMS) a clear trend can be observed which leads from dedicated hardware to signal processing in software. A problem is to guarantee real-time performance on programmable platforms with varying computational resources. Scalable video algorithms (SVA) which adapt automatically their output quality to the available resources represent thereby a novel concept. We propose...
2D image resizing is an important issue for pixel oriented displays with variable input formats. With current separable filters including high order polyphase filters, the problem of jagged lines at diagonal edges remains. Another issue is the need of simple but high-quality sealers for a wide range of applications. The novel approach investigated for high-quality resizing by rational factors is based...
This is the first thorough study of refilling of a cortical calcium store in a secretory cell after stimulation in which we combined widely different methodologies. Stimulation of dense-core vesicle (''trichocysts'') exocytosis in Paramecium involves a Ca 2+ -influx'' superimposed to Ca 2+ -release from cortical stores (''alveolar sacs'' (ASs)). In quenched-flow experiments,...
Several ‘centres of excellence’ of research in complementary/alternative medicine (CAM) have emerged in recent years. This study represents an attempt to profile the most productive of these centres. Medline searches (1995–2001) were performed with a long list of individuals directing CAM research groups as key words. Eight of them (all male) had published in excess of 20 Medline-listed articles between...
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