Automotive Innovation ›› 2021, Vol. 4 ›› Issue (4): 400-412.doi: 10.1007/s42154-021-00157-x

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VCANet: Vanishing-Point-Guided Context-Aware Network for Small Road Object Detection

Guang Chen1&2, Kai Chen1, Lijun Zhang1, Liming Zhang3 & Alois Knoll   

  1. 1. Tongji University, Shanghai, China; 2. Technical University of Munich, Munich, Germany; 3. Geely Research Institute, Hangzhou, China.
  • 出版日期:2021-11-19 发布日期:2021-11-19

VCANet: Vanishing-Point-Guided Context-Aware Network for Small Road Object Detection

Guang Chen1&2, Kai Chen1, Lijun Zhang1, Liming Zhang3 & Alois Knoll   

  1. 1. Tongji University, Shanghai, China; 2. Technical University of Munich, Munich, Germany; 3. Geely Research Institute, Hangzhou, China.
  • Online:2021-11-19 Published:2021-11-19

摘要: Advanced deep learning technology has made great progress in generic object detection of autonomous driving, yet it is still challenging to detect small road hazards in a long distance owing to lack of large-scale small-object datasets and dedicated methods. This work addresses the challenge from two aspects. Firstly, a self-collected long-distance road object dataset (TJ-LDRO) is introduced, which consists of 109,337 images and is the largest dataset so far for the small road object detection research. Secondly, a vanishing-point-guided context-aware network (VCANet) is proposed, which utilizes the vanishing point prediction block and the context-aware center detection block to obtain semantic information. The multi-scale feature fusion pipeline and the upsampling block in VCANet are introduced to enhance the region of interest (ROI) feature. The experimental results with TJ-LDRO dataset show that the proposed method achieves better performance than the representative generic object detection methods. This work fills a critical capability gap in small road hazards detection for high-speed autonomous vehicles.

Abstract: Advanced deep learning technology has made great progress in generic object detection of autonomous driving, yet it is still challenging to detect small road hazards in a long distance owing to lack of large-scale small-object datasets and dedicated methods. This work addresses the challenge from two aspects. Firstly, a self-collected long-distance road object dataset (TJ-LDRO) is introduced, which consists of 109,337 images and is the largest dataset so far for the small road object detection research. Secondly, a vanishing-point-guided context-aware network (VCANet) is proposed, which utilizes the vanishing point prediction block and the context-aware center detection block to obtain semantic information. The multi-scale feature fusion pipeline and the upsampling block in VCANet are introduced to enhance the region of interest (ROI) feature. The experimental results with TJ-LDRO dataset show that the proposed method achieves better performance than the representative generic object detection methods. This work fills a critical capability gap in small road hazards detection for high-speed autonomous vehicles.