Indoor positioning using camera and optical signal
AssigneeCambridge Silicon Radio Limited
InventorsMurray Robert Jarvis, Nicolas Graube
Life of this patent
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Abstract
A method for detecting a collector device in an indoor area associated with imaging devices covering the area includes a plurality of collector devices emitting markers to the imaging devices coupled to a server. The imaging devices capture the images of the collector devices including the markers. The images are processed in order to determine the current positions of the collector devices corresponding to the markers. The server and the collector device communicate with each other and match a current position corresponding to the collector device among the plurality of collector devices.
Claims21
A method for determining a location of a collector device associated with a server, a plurality of radio frequency (RF) signal sources and a plurality of imaging devices coupled to the server, the method comprising the collector device:
- collecting multiple sets of measurements from multiple RF signal sources;
- determining a first position of the collector device based on the multiple sets of measurements;
- communicating information about the first position to the server;
- emitting a marker to at least one of the plurality of imaging devices;
- and
- receiving from the server, the location mapped to a second position, in response to the marker;
- wherein the second position has higher precision than the first position.
A method for determining a location of a collector device associated with a server, a plurality of radio frequency (RF) signal sources and a plurality of imaging devices, the method comprising the server:
- receiving multiple sets of measurements from multiple RF signal sources collected by the collector device;
- determining a first position of the collector device from the multiple sets of measurements;
- determining a set of imaging devices among the plurality of imaging devices for capturing images of the collector device based on information of the first position;
- receiving at least one of the images from the set of imaging devices, the at least one image including a marker from the collector device;
- processing the at least one image to map the collector device to a second position according to the marker;
- and
- sending the second position to the collector device;
- wherein the second position has higher precision than the first position.
A method for automatically determining a location of a collector device from a plurality of collector devices associated with a plurality of imaging devices coupled to a server, the method comprising each collector device:
- emitting a marker to be received by at least one of the plurality of imaging devices;
- receiving a plurality of current positions corresponding to the markers from the server;
- and
- matching the collector device to at least one of the current positions corresponding to at least one of the markers.
A method for automatically determining a location of a collector device from among a plurality of collector devices associated with a plurality of imaging devices and a server, the method comprising the server:
- receiving a plurality of images of the collector devices from the imaging devices;
- wherein the images are captured upon continuous scanning and including images of markers emitted by the collector devices;
- calculating current positions corresponding to the markers;
- receiving a request from at least one of the collector devices for a plurality of current positions of the markers;
- responding to the request by sending the current positions to at least one of the collector devices.
An apparatus comprising:
- a transmitter/receiver for generating multiple sets of measurements of respective RF sources via an antenna;
- a processor for processing the multiple sets of measurements in order to determine a coarse position of the apparatus;
- and
- an emitter for emitting at least one marker.
A method for automatically detecting a collector device from a plurality of collector devices associated with a plurality of imaging devices coupled to a server, the steps including:
- capturing a plurality of images including a plurality of markers;
- calculating a plurality of current positions corresponding to the markers;
- and
- identifying at least one collector device from the plurality of collector devices based on the current position information.
A computer-readable medium carrying one or more sequences of instructions by one or more processors of a collector device causes the one or more processors of the collector device to perform the steps of:
- collecting multiple sets of measurements from multiple RF signal sources;
- determining a first position of the collector device based on the multiple sets of measurements;
- communicating information about the first position to the server;
- emitting a marker to at least one of the plurality of imaging devices;
- and
- receiving the location mapped to a second position, in response to the marker, from the server;
- wherein the second position has higher precision than the first position.
Dependencies are inferred from the claim text.