High-definition (HD) maps have played an integral role in the development of modern autonomous vehicle (AV) stacks, albeit with high associated labeling and maintenance costs. As a result, many recent works have proposed methods for estimating HD maps online from sensor data, enabling AVs to operate outside of previously-mapped regions. However, current online map estimation approaches are developed in isolation of their downstream tasks, complicating their integration in AV stacks. In particular, they do not produce uncertainty or confidence estimates. In this work, we extend multiple state-of-the-art online map estimation methods to additionally estimate uncertainty and show how this enables more tightly integrating online mapping with trajectory forecasting. In doing so, we find that incorporating uncertainty yields up to 50% faster training convergence and up to 15% better prediction performance on the real-world nuScenes driving dataset.

高清地图在现代自动驾驶车辆的发展中起着重要作用，本文介绍了多种先进的在线地图估计方法，并扩展了不确定性预测，以更好地与轨迹预测结合，实验结果表明不确定性的引入可以提高训练收敛速度和预测性能。

在线地图不确定性的生成和应用于轨迹预测