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We present a general method for reconstructing unknown objects (e.g. humans) within a known environment (e.g. tables, racks, robots) which usually has occlusions. These occlusions have to be considered since parts of the unknown objects might be hidden in some or even all camera views. Besides grayscale and color cameras also depth sensors are considered.(More)
An intuitive behavior model for safe human/robot coexistence and cooperation is presented. For this purpose, we classify the robot behavior into four cooperation states, which are characterized by two criteria: motion context and interaction context. The motion context can be gross or fine and the interaction context can be free or guided. We describe basic(More)
We present a method for quickly determining the minimum distance between multiple known and multiple unkown objects within a camera image. Known objects are objects with known geometry, position, orientation, and configuration. Unkown objects are objects which have to be detected by a vision sensor but with unkown geometry, position, orientation and(More)
We present a method for securing guided robot motions in terms of human/robot cooperation. For this, we limit the maximum allowable velocity of the robot based on the distance to the human or to the next obstacle and generate the effective velocity using guidance informations provided by the interacting human. Therefore, we fuse the two heterogenous data(More)
In modern production facilities industrial robots and humans are supposed to interact sharing a common working area. In order to avoid collisions, the distances between objects need to be measured conservatively which can be done by a camera network. To estimate the acquired distance, unmodelled objects, e.g., an interacting human, need to be modelled and(More)
NMR is a mature technique that is well established and adopted in a wide range of research facilities from laboratories to hospitals. This accounts for large amounts of valuable experimental data that may be readily exported into a standard and open format. Yet the publication of these data faces an important issue: Raw data are not made available; instead,(More)
We introduce an approach of multi-view based surveillance of human/robot workspaces. Unknown objects within a robot workcell as e.g. humans are to be detected to avoid accidents with the robot. Therefore, two aspects are to be discussed: First, the reconstruction of regions within the robot workcell which are potentially occupied by unknown objects based on(More)