The 1st-place Solution for CVPR 2023 OpenLane Topology in Autonomous
  Driving Challenge
Dongming Wu Fan Jia Jiahao Chang Zhuoling Li Jianjian Sun Chunrui Han Shuailin Li Yingfei Liu Zheng Ge Tiancai Wang
We present the 1st-place solution of OpenLane Topology in Autonomous Driving
Challenge. Considering that topology reasoning is based on centerline detection
and traffic element detection, we develop a multi-stage framework for high
performance. Specifically, the centerline is detected by the powerful PETRv2
detector and the popular YOLOv8 is employed to detect the traffic elements.
Further, we design a simple yet effective MLP-based head for topology
prediction. Our method achieves 55\% OLS on the OpenLaneV2 test set, surpassing
the 2nd solution by 8 points.