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Article

The UJI Aerial Librarian Robot: A Quadcopter for Visual Library Inventory and Book Localisation

1
RoViT, Department of Computer Science and Artificial Intelligence, University of Alicante, 03690 Alicante, Spain
2
Robotic Intelligence Lab (RobInLab), Department of Engineering and Computer Science, Universitat Jaume I, 12071 Castellón, Spain
3
Department of Interaction Science, Sungkyunkwan University, Seoul 110-745, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Andreas Savakis
Sensors 2021, 21(4), 1079; https://doi.org/10.3390/s21041079
Received: 27 November 2020 / Revised: 31 January 2021 / Accepted: 1 February 2021 / Published: 4 February 2021
(This article belongs to the Special Issue Aerial Vision and Sensors)
Over time, the field of robotics has provided solutions to automate routine tasks in different scenarios. In particular, libraries are awakening great interest in automated tasks since they are semi-structured environments where machines coexist with humans and several repetitive operations could be automatically performed. In addition, multirotor aerial vehicles have become very popular in many applications over the past decade, however autonomous flight in confined spaces still presents a number of challenges and the use of small drones has not been reported as an automated inventory device within libraries. This paper presents the UJI aerial librarian robot that leverages computer vision techniques to autonomously self-localize and navigate in a library for automated inventory and book localization. A control strategy to navigate along the library bookcases is presented by using visual markers for self-localization during a visual inspection of bookshelves. An image-based book recognition technique is described that combines computer vision techniques to detect the tags on the book spines, followed by an optical character recognizer (OCR) to convert the book code on the tags into text. These data can be used for library inventory. Misplaced books can be automatically detected, and a particular book can be located within the library. Our quadrotor robot was tested in a real library with promising results. The problems encountered and limitation of the system are discussed, along with its relation to similar applications, such as automated inventory in warehouses. View Full-Text
Keywords: aerial robotics; library; unmanned aerial system (UAS); multi rotor; automated inventory aerial robotics; library; unmanned aerial system (UAS); multi rotor; automated inventory
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MDPI and ACS Style

Martinez-Martin, E.; Ferrer, E.; Vasilev, I.; del Pobil, A.P. The UJI Aerial Librarian Robot: A Quadcopter for Visual Library Inventory and Book Localisation. Sensors 2021, 21, 1079. https://doi.org/10.3390/s21041079

AMA Style

Martinez-Martin E, Ferrer E, Vasilev I, del Pobil AP. The UJI Aerial Librarian Robot: A Quadcopter for Visual Library Inventory and Book Localisation. Sensors. 2021; 21(4):1079. https://doi.org/10.3390/s21041079

Chicago/Turabian Style

Martinez-Martin, Ester, Eric Ferrer, Ilia Vasilev, and Angel P. del Pobil 2021. "The UJI Aerial Librarian Robot: A Quadcopter for Visual Library Inventory and Book Localisation" Sensors 21, no. 4: 1079. https://doi.org/10.3390/s21041079

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