Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Fraunhofer-ges. Zur Förderung Der Angewandten Forschung E.v.

Christopher Mutschler

Stephan Otto

Tobias Feigl

Nicolas Witt

Michael Philippsen

Christian Daxer

Norbert Franke

Thomas Von Der Gruen

Ingmar Bretz

Marc Faßbinder

Thomas Von Der Grün

Bercea Cosmin-Ionut

David Voll

Christoffer Loeffler

Alexander Bruckmann

Matthias Völker

Thorsten Edelhäußer

A method () to determine a present position () of an object (). The method () comprises using () an optical positioning system () to determine a first preliminary position () and using () a radio-based positioning system () to determine a second preliminary position (), determining () a supposed position () on the basis of one of the preliminary positions () and combining () the supposed position () with a previous position () of the object to determine the present position () of the object, if the supposed position () is based on a different positioning system () than a previous supposed position ('). A positioning system () with combined optical and a radio-based determination of a position of a tracker () and a tracker () with an active light source ().

Method to determine a present position of an object, positioning system, tracker and computer program

A method for setting a direction of view in a representation of a virtual environment is disclosed. The method includes recording a known object in a real environment using a recording device. Further, the method includes determining a rotational offset of the direction of view in the representation of the virtual environment around a yaw axis of the representation of the virtual environment based on the recording of the object, a known position of the recording device in the real environment and a current direction of view in the representation of the virtual environment. The method further includes rotating the direction of view in the representation of the virtual environment by the rotational offset.

Method for setting a viewing direction in a representation of a virtual environment

A Method for transmitting a message from a sender () to a set of multiple receivers (-) over a network comprises sending a multicast message () to the set of multiple receivers (-) and receiving acknowledgement messages () from a subset of the receivers (), each acknowledgement message () indicating the receipt of the multicast message () by a single receiver. The method further comprises sending a unicast message () to a receiver of the set of receivers which is not part of the subset of the receivers ().

Apparatus and method for transmitting a message to multiple receivers

Embodiments relate to methods () and apparatuses () transferring a first event detector process of a first node (-) of a distributed computing system () to a second event detector process of a second node (-) of the distributed computing system (), the second node (-) being different from the first node (-). The apparatus () comprises means () for copying a process content of the first event detector process to the second event detector process, means () for coordinating input events of the first event detector process such that the input events of the first event detector process are processed in parallel at both the first and the second event detector processes, and means () for verifying whether the input events of the first event detector process, which are processed in parallel at both the first and the second event detector process, lead to identical output events at both the first and the second event detector processes.

Apparatus and method for transferring event detector processes

In a method for reconstructing a motion of an object from a sequence of motion pattern segments of a computer model of the object, a motion transition between an initial motion state and a final motion state of the object in a time interval of the motion is captured based on position data of the at least one sampling point which is received from the position marker. Further, at least one motion pattern segment corresponding to the motion transition is selected from a plurality of motion patterns of the computer model which are stored in a database such that the selected motion pattern segment leads with sufficient probability from the initial motion state to the final motion state for the time interval. Furthermore, an image of the motion of the object for the time interval is reconstructed using the initial motion state and the selected motion pattern segment.

Device, method and computer program for reconstructing a motion of an object

Embodiments relate to a concept for ordering events of an event stream, comprising out-of-order events, for an event detector, wherein the events have associated thereto individual event occurrence times (e&#xb7;ts) and individual event propagation delays up to a maximum delay of K time units. Event received from the event stream are provided to an event buffer. Received events in the event buffer are ordered according their respective occurrence times to obtain ordered events. An ordered event (e) having an event occurrence time e&#xb7;ts is speculatively forwarded from the event buffer to the event detector at an earliest time instant clk, such that e&#xb7;ts+&#x3b1;*K&#x2266;clk, wherein &#x3b1; denotes a speculation quantity with 0&#x3c;&#x3b1;&#x3c;1.

Apparatus, method and computer program for processing out-of-order events

Embodiments relate to methods and apparatuses () for synchronizing a first event (), having associated therewith a first original event timing value based on a common clock signal, and a second event (), having associated therewith a second original event timing value based on the common clock signal, wherein the first and the second event () experience different delays while travelling through different paths of a distributed computing system (), and wherein at least one output event () is to be determined by an event detector () based on the first and the second event (). The apparatus () comprises a delay compensator () associated to the event detector (), the delay compensator () having an input () for receiving the first and the second event () and having an output () for forwarding relayed versions (') of the received first and second event to the associated event detector (), wherein the delay compensator () is operable to relay the first and the second event () to the associated event detector () based on the experienced delays and based on the associated first and second original event timing values.

Apparatus and method for synchronizing events

Embodiments relate to a concept for migrating an event detector of a first node (N) of a distributed computing system () to a second node (N) of the distributed computing system, wherein the event detector processes a plurality of input events (e; A, B, C) to generate at least one output event (D) based on the input events, wherein each of the input events has associated therewith an individual event delay corresponding to a propagation time of the input event to the first node (N). It comprises transferring (), from the first node (N) to the second node (N), information on event delays corresponding to the plurality of input events (e; A, B, C) at the first node (N); transferring () a content of the event detector from the first node (N) to the second node (N) to obtain a migrated event detector at the second node; forwarding () the plurality of input events (e; A, B, C) from the first node (N) to the second node (N); receiving (), at the second node (N), the plurality of input events (e; A, B, C) forwarded from the first node (N) and, in parallel, from originating event detectors associated to the plurality of input events; and processing (), at the second node (N), the plurality of received input events (e; A, B, C) based on the transferred information on the event delays and based on event delays of the plurality of input events (e; A, B, C) received from the associated originating event detectors.

Apparatus, method and computer program for migrating an event detector process

A portable device includes a viewing direction sensor configured to determine the viewing direction of a user of the portable device in the real world and a position determiner configured to determine a position of the user in the real world. Furthermore, the portable device includes a processing unit configured to generate&#x2014;based on the viewing direction of the user and the position of the user in the real world&#x2014;a virtual world in which a change of the viewing direction in a 3D coordinate system of the real world leads to a change of the viewing direction in a 3D coordinate system of the virtual world. The portable device further includes a display configured to display the generated virtual world to the user while blocking a view of the real world.

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Erlangen, Germany

Christopher Mutschler