Accurate traffic light detection using deep neural network with focal regression loss
SCIE
SCOPUS
- Title
- Accurate traffic light detection using deep neural network with focal regression loss
- Authors
- Lee, E.; Kim, D.
- Date Issued
- 2019-07
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- This paper proposes a method that uses a deep neural network (DNN) to detect small traffic lights (TLs) in images captured by cameras mounted in vehicles. The proposed TL detector has a DNN architecture of encoder-decoder with focal regression loss; this loss function reduces loss of well-regressed easy examples. The proposed TL detector has freestyle anchor boxes that are placed at arbitrary locations in a grid cell of an input image, so it can detect small objects located at borders of the grid cell. We evaluate the proposed TL detector with a focal regression loss on two public TL datasets: Bosch small traffic light dataset, and LISA traffic lights data set. Compared to state-of-the-art TL detectors, the proposed TL detector achieves 7.19%42.03% higher mAP on the Bosch-TL dataset and 19.86%-49.16% higher AUC on the LISA-TL dataset. (C) 2019 Elsevier B.V. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/100195
- DOI
- 10.1016/j.imavis.2019.04.003
- ISSN
- 0262-8856
- Article Type
- Article
- Citation
- IMAGE AND VISION COMPUTING, vol. 87, page. 24 - 36, 2019-07
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