Method, device and system for calibrating positioning device
First Claim
1. A system comprising:
- a tag capable of emitting ranging signals, placed at at least two area of interest (AOI) feature points which can characterize an area of interest in a space;
a positioning device in said space, configured to obtain location parameters of said AOI feature points based on the ranging signals from the tag; and
a server, configured to characterize said area of interest based on the location parameters of said AOI feature points,wherein the server determines location parameters of the positioning device based on the obtained location parameters of said AOI feature points, andwherein when said area of interest is of an irregular shape,said positioning device is further configured to obtain location parameters of at least three AOI feature points on a boundary of the area of interest by means of the tag, so as to constitute a feature point sequence;
said server is further configured to fit said feature point sequence so as to characterize the area of interest.
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Abstract
Embodiments of the present invention provide not only a technical solution for calibrating a positioning device but also a technical solution for characterizing an area of interest in a space. Specifically, there is provided a system, which may include: a tag capable of emitting ranging signals, placed at location points which are selected as space feature points in the space; a positioning device in the space, configured to obtain relative coordinates of the space feature points in relation to the positioning device based on the ranging signals from the tag; and a server, configured to determine location parameters of the positioning device in the space based on the relative coordinates, so as to calibrate the positioning device. The positioning device can be calibrated automatically, fast and accurately using the system.
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Citations
14 Claims
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1. A system comprising:
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a tag capable of emitting ranging signals, placed at at least two area of interest (AOI) feature points which can characterize an area of interest in a space; a positioning device in said space, configured to obtain location parameters of said AOI feature points based on the ranging signals from the tag; and a server, configured to characterize said area of interest based on the location parameters of said AOI feature points, wherein the server determines location parameters of the positioning device based on the obtained location parameters of said AOI feature points, and wherein when said area of interest is of an irregular shape, said positioning device is further configured to obtain location parameters of at least three AOI feature points on a boundary of the area of interest by means of the tag, so as to constitute a feature point sequence; said server is further configured to fit said feature point sequence so as to characterize the area of interest. - View Dependent Claims (2, 3)
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4. A method for characterizing an area of interest in a space, comprising:
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receiving location parameters of at least two area of interest (AOI) feature points which can characterize the area of interest, wherein said location parameters are obtained by a positioning device deployed in the space; and characterizing said area of interest based on said location parameters and determining location parameters of the positioning device based on the received location parameters of said at least two AOI feature points, wherein when said area of interest is of an irregular shape, the method comprises; receiving location parameters of at least three AOI feature points on a boundary of the area of interest, said at least three AOI feature points constituting a feature point sequence; and fitting said feature point sequence to characterize the area of interest. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A device for characterizing an area of interest in a space, comprising:
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receiving means for receiving location parameters of at least two area of interest (AOI) feature points which can characterize said area of interest, wherein said location parameters are obtained by a positioning device deployed in a space; and characterizing means for characterizing said area of interest based on said location parameters, wherein the characterizing means determines location parameters of the positioning device based on the received location parameters of said at least two AOI feature points, wherein when said area of interest is of an irregular shape, said receiving means further receives location parameters of at least three AOI feature points on a boundary of the area of interest to constitute a feature point sequence; said characterizing means further comprises means for fitting said feature point sequence to characterize the area of interest. - View Dependent Claims (13, 14)
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Specification