Unstructured road vanishing point (VP) detection is a challenging problem, especially in the field of autonomous driving. In this paper, we proposed a novel solution combining the convolutional neural network (CNN) and heatmap regression to detect unstructured road VP. The proposed algorithm firstly adopts a lightweight backbone, i.e., depthwise convolution modified HRNet, to extract hierarchical features of the unstructured road image. Then, three advanced strategies, i.e., multi-scale supervised learning, heatmap super-resolution, and coordinate regression techniques are utilized to achieve fast and high-precision unstructured road VP detection. The empirical results on Kong's dataset show that our proposed approach enjoys the highest detection accuracy compared with state-of-the-art methods under various conditions in real-time, achieving the highest speed of 33 fps.
@article{arxiv.2006.04691,
title = {Unstructured Road Vanishing Point Detection Using the Convolutional Neural Network and Heatmap Regression},
author = {Yin-Bo Liu and Ming Zeng and Qing-Hao Meng},
journal= {arXiv preprint arXiv:2006.04691},
year = {2020}
}