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Open AccessFeature PaperArticle

On the Introduction of Canny Operator in an Advanced Imaging Algorithm for Real-Time Detection of Hyperbolas in Ground-Penetrating Radar Data

1
Department for computing and control engineering, Faculty of technical sciences, University of Novi Sad, 21000 Novi Sad, Serbia
2
Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, 00184 Rome, Italy
*
Author to whom correspondence should be addressed.
Electronics 2020, 9(3), 541; https://doi.org/10.3390/electronics9030541
Received: 25 February 2020 / Revised: 17 March 2020 / Accepted: 19 March 2020 / Published: 24 March 2020
(This article belongs to the Special Issue Microwave Imaging and Its Application)
This paper focuses on the use of the Canny edge detector as the first step of an advanced imaging algorithm for automated detection of hyperbolic reflections in ground-penetrating radar (GPR) data. Since the imaging algorithm aims to work in real time; particular attention is paid to its computational efficiency. Various alternative criteria are designed and examined, to fasten the procedure by eliminating unnecessary edge pixels from Canny-processed data, before such data go through the subsequent steps of the detection algorithm. The effectiveness and reliability of the proposed methodology are tested on a wide set of synthetic and experimental radargrams with promising results. The finite-difference time-domain simulator gprMax is used to generate synthetic radargrams for the tests, while the real radargrams come from GPR surveys carried out by the authors in urban areas. The imaging algorithm is implemented in MATLAB. View Full-Text
Keywords: ground-penetrating radar; non-destructive testing; microwave imaging; Canny edge operator; real-time detection; target localization; hyperbolic reflections ground-penetrating radar; non-destructive testing; microwave imaging; Canny edge operator; real-time detection; target localization; hyperbolic reflections
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MDPI and ACS Style

Bugarinović, Ž.; Pajewski, L.; Ristić, A.; Vrtunski, M.; Govedarica, M.; Borisov, M. On the Introduction of Canny Operator in an Advanced Imaging Algorithm for Real-Time Detection of Hyperbolas in Ground-Penetrating Radar Data. Electronics 2020, 9, 541.

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