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Transport Object Detection in Street View Imagery Using Decomposed Convolutional Neural Networks

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  • Yunpeng Bai

    (Department of Computer Science, Aberystwyth University, Aberystwyth SY23 3DB, UK)

  • Changjing Shang

    (Department of Computer Science, Aberystwyth University, Aberystwyth SY23 3DB, UK)

  • Ying Li

    (School of Computer Science, Northwestern Polytechnical University, Xi’an 710129, China)

  • Liang Shen

    (School of Information Engineering, Fujian Business University, Fuzhou 350506, China)

  • Shangzhu Jin

    (Information Office, Chongqing University of Science and Technology, Chongqing 401331, China)

  • Qiang Shen

    (School of Computer Science, Northwestern Polytechnical University, Xi’an 710129, China)

Abstract

Deep learning has achieved great successes in performing many visual recognition tasks, including object detection. Nevertheless, existing deep networks are computationally expensive and memory intensive, hindering their deployment in resource-constrained environments, such as mobile or embedded devices that are widely used by city travellers. Recently, estimating city-level travel patterns using street imagery has been shown to be a potentially valid way according to a case study with Google Street View (GSV), addressing a critical challenge in transport object detection. This paper presents a compressed deep network using tensor decomposition to detect transport objects in GSV images, which is sustainable and eco-friendly. In particular, a new dataset named Transport Mode Share-Tokyo (TMS-Tokyo) is created to serve the public for transport object detection. This is based on the selection and filtering of 32,555 acquired images that involve 50,827 visible transport objects (including cars, pedestrians, buses, trucks, motors, vans, cyclists and parked bicycles) from the GSV imagery of Tokyo. Then a compressed convolutional neural network (termed SVDet) is proposed for street view object detection via tensor train decomposition on a given baseline detector. The method proposed herein yields a mean average precision (mAP) of 77.6% on the newly introduced dataset, TMS-Tokyo, necessitating just 17.29 M parameters and a computational capacity of 16.52 G FLOPs. As such, it markedly surpasses the performance of existing state-of-the-art methods documented in the literature.

Suggested Citation

  • Yunpeng Bai & Changjing Shang & Ying Li & Liang Shen & Shangzhu Jin & Qiang Shen, 2023. "Transport Object Detection in Street View Imagery Using Decomposed Convolutional Neural Networks," Mathematics, MDPI, vol. 11(18), pages 1-22, September.
  • Handle: RePEc:gam:jmathe:v:11:y:2023:i:18:p:3839-:d:1235024
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    References listed on IDEAS

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    1. Michael Grimsrud & Ahmed El-Geneidy, 2014. "Transit to eternal youth: lifecycle and generational trends in Greater Montreal public transport mode share," Transportation, Springer, vol. 41(1), pages 1-19, January.
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