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The capacity to robustly detect humans in video is a critical component of automated visual surveillance systems. This paper describes a bilattice based logical reasoning approach that exploits contextual information and knowledge about interactions between humans, and augments it with the output of different low level detectors for human detection.(More)
We present a method to automatically extract spatio-temporal descriptions of moving objects from synchronized and calibrated multi-view sequences. The object is modeled by a time-varying multi-resolution subdivision surface that is fitted to the image data using spatio-temporal multi-view stereo information, as well as contour constraints. The stereo data(More)
Perceiving meaningful activities in a long video sequence is a challenging problem due to ambiguous definition of 'meaningfulness' as well as clutters in the scene. We approach this problem by learning a generative model for regular motion patterns (termed as regularity) using multiple sources with very limited supervision. Specifically, we propose two(More)
Primary human hepatocytes (hHeps) are still gold standard to perform human drug metabolism studies, but their availability is limited by donor organ scarcity. Therefore, hepatoma cell lines are widely used as alternatives, although their phases I and II drug-metabolizing activities are substantially lower compared with hHeps. The major advantage of these(More)
Wnt/Frizzled signaling, essential for embryonic development, has also recently been implicated in the modulation of inflammatory processes. In the current study, we observed a reciprocal regulation of the Toll-like receptor (TLR)/nuclear factor-κB (NF-κB) and the Wnt/β-catenin pathway after aerosol infection of mice with Mycobacterium tuberculosis: whereas(More)
Combinations of microphones and cameras allow the joint audio visual sensing of a scene. Such arrangements of sensors are common in biological organisms and in applications such as meeting recording and surveillance where both modalities are necessary to provide scene understanding. Microphone arrays provide geometrical information on the source location,(More)
Wnt proteins are secreted, palmitoylated glycoproteins with multiple functions in cell proliferation and migration as well as tissue organization. They are best known for their role in embryonic development and tissue homeostasis. In the last years, Wnt signaling was also shown to be involved in the regulation of inflammatory processes: Wnt5a is induced in(More)
Most cameras used in computer vision applications are still based on the pinhole principle inspired by our own eyes. It has been found though that this is not necessarily the optimal image formation principle for processing visual information using a machine. In this paper we describe how to find the optimal camera for 3D motion estimation by analyzing the(More)
We investigate the relationship between camera design and the problem of recovering the motion and structure of a scene from video data. The visual information that could possibly be obtained is described by the plenoptic function. A camera can be viewed as a device that captures a subset of this function, that is, it measures some of the light rays in some(More)