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Indoor Location Technology with High Accuracy Using Simple Visual Tags

Sensors (Basel, Switzerland), 2023-02, Vol.23 (3), p.1597 [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2023 by the authors. 2023 ;ISSN: 1424-8220 ;EISSN: 1424-8220 ;DOI: 10.3390/s23031597 ;PMID: 36772637

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  • Title:
    Indoor Location Technology with High Accuracy Using Simple Visual Tags
  • Author: Gao, Feng ; Ma, Jie
  • Subjects: Accuracy ; Algorithms ; Analysis ; Cameras ; Complexity ; Data storage ; Design ; error analysis ; Error reduction ; indoor location ; Information storage and retrieval ; Position (location) ; Satellites ; Semantics ; Spatial distribution ; Systems design ; Tags ; visual location ; weighted least squares
  • Is Part Of: Sensors (Basel, Switzerland), 2023-02, Vol.23 (3), p.1597
  • Description: To achieve low-cost and robustness, an indoor location system using simple visual tags is designed by comprehensively considering accuracy and computation complexity. Only the color and shape features are used for tag detection, by which both algorithm complexity and data storage requirement are reduced. To manage the nonunique problem caused by the simple tag features, a fast query and matching method is further presented by using the view field of the camera and the tag azimuth. Then, based on the relationship analysis between the spatial distribution of tags and location error, a pose and position estimation method using the weighted least square algorithm is designed and works together with the interactive algorithm by the designed switching strategy. By using the techniques presented, a favorable balance is achieved between the algorithm complexity and the location accuracy. The simulation and experiment results show that the proposed method can manage the singular problem of the overdetermined equations effectively and attenuate the negative effect of unfavorable label groups. Compared with the ultrawide band technology, the location error is reduced by more than 62%.
  • Publisher: Switzerland: MDPI AG
  • Language: English
  • Identifier: ISSN: 1424-8220
    EISSN: 1424-8220
    DOI: 10.3390/s23031597
    PMID: 36772637
  • Source: DOAJ Directory of Open Access Journals
    GFMER Free Medical Journals
    PubMed Central
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
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