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DC Field | Value | Language |
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dc.contributor.author | Gao, M | - |
dc.contributor.author | Chen, C | - |
dc.contributor.author | Shi, J | - |
dc.contributor.author | Lai, CS | - |
dc.contributor.author | Yang, Y | - |
dc.contributor.author | Dong, Z | - |
dc.date.accessioned | 2020-08-30T00:06:59Z | - |
dc.date.available | 2020-08-30T00:06:59Z | - |
dc.date.issued | 2020-08-27 | - |
dc.identifier.citation | Gao, M.; Chen, C.; Shi, J.; Lai, C.S.; Yang, Y.; Dong, Z. A Multiscale Recognition Method for the Optimization of Traffic Signs Using GMM and Category Quality Focal Loss. Sensors 2020, 20, 4850. | en_US |
dc.identifier.issn | 1424-8220 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/21484 | - |
dc.description.abstract | Effective traffic sign recognition algorithms can assist drivers or automatic driving systems in detecting and recognizing traffic signs in real-time. This paper proposes a multiscale recognition method for traffic signs based on the Gaussian Mixture Model (GMM) and Category Quality Focal Loss (CQFL) to enhance recognition speed and recognition accuracy. Specifically, GMM is utilized to cluster the prior anchors, which are in favor of reducing the clustering error. Meanwhile, considering the most common issue in supervised learning (i.e., the imbalance of data set categories), the category proportion factor is introduced into Quality Focal Loss, which is referred to as CQFL. Furthermore, a five-scale recognition network with a prior anchor allocation strategy is designed for small target objects i.e., traffic sign recognition. Combining five existing tricks, the best speed and accuracy tradeoff on our data set (40.1% mAP and 15 FPS on a single 1080Ti GPU), can be achieved. The experimental results demonstrate that the proposed method is superior to the existing mainstream algorithms, in terms of recognition accuracy and recognition speed. | en_US |
dc.description.sponsorship | National Natural Science Foundation of China; Fundamental Research Funds for the Provincial Universities; Key R&D Program of Zhejiang Province; Brunel Research Initiative and Enterprise Fund. | en_US |
dc.format.extent | 4850 - 4850 | - |
dc.language | en | - |
dc.language.iso | en | en_US |
dc.publisher | MDPI | en_US |
dc.subject | Image recognition | en_US |
dc.subject | Traffic sign | en_US |
dc.subject | Gaussian Mixture Model | en_US |
dc.subject | Multiscale recognition | en_US |
dc.subject | Category imbalance | en_US |
dc.title | A Multiscale Recognition Method for the Optimization of Traffic Signs Using GMM and Category Quality Focal Loss | en_US |
dc.type | Article | en_US |
dc.identifier.doi | http://dx.doi.org/10.3390/s20174850 | - |
dc.relation.isPartOf | Sensors | - |
pubs.issue | 17 | - |
pubs.publication-status | Published online | - |
pubs.volume | 20 | - |
dc.identifier.eissn | 1424-8220 | - |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
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FullText.pdf | 5.6 MB | Adobe PDF | View/Open |
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