Reconstruct from Top View: A 3D Lane Detection Approach based on Geometry Structure Prior

• URL: http://arxiv.org/abs/2206.10098v1
• Date: Tue, 21 Jun 2022 04:03:03 GMT
• Title: Reconstruct from Top View: A 3D Lane Detection Approach based on Geometry Structure Prior
• Authors: Chenguang Li, Jia Shi, Ya Wang, Guangliang Cheng
• Abstract summary: We propose an advanced approach in targeting the problem of monocular 3D lane detection by leveraging geometry structure underneath process of 2D to 3D lane reconstruction. We first analyze the geometry between the 3D lane and its 2D representation on the ground and propose to impose explicit supervision based on the structure prior. Second, to reduce the structure loss in 2D lane representation, we directly extract top view lane information from front view images.
• Score: 19.1954119672487
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, we propose an advanced approach in targeting the problem of monocular 3D lane detection by leveraging geometry structure underneath the process of 2D to 3D lane reconstruction. Inspired by previous methods, we first analyze the geometry heuristic between the 3D lane and its 2D representation on the ground and propose to impose explicit supervision based on the structure prior, which makes it achievable to build inter-lane and intra-lane relationships to facilitate the reconstruction of 3D lanes from local to global. Second, to reduce the structure loss in 2D lane representation, we directly extract top view lane information from front view images, which tremendously eases the confusion of distant lane features in previous methods. Furthermore, we propose a novel task-specific data augmentation method by synthesizing new training data for both segmentation and reconstruction tasks in our pipeline, to counter the imbalanced data distribution of camera pose and ground slope to improve generalization on unseen data. Our work marks the first attempt to employ the geometry prior information into DNN-based 3D lane detection and makes it achievable for detecting lanes in an extra-long distance, doubling the original detection range. The proposed method can be smoothly adopted by other frameworks without extra costs. Experimental results show that our work outperforms state-of-the-art approaches by 3.8% F-Score on Apollo 3D synthetic dataset at real-time speed of 82 FPS without introducing extra parameters.

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