动态意图点提升自动驾驶轨迹预测精度,尤其长时预测更准。
Dynamic Intent Queries for Motion Transformer-based Trajectory Prediction
- 用动态意图点替代静态目标点,适配具体路况
- 长时预测误差降低,地图合规性显著改善
- 适合自动驾驶规划与复杂场景仿真研究者
在自动驾驶中,准确预测其他交通参与者的行为对车辆决策至关重要。现代轨迹预测模型致力于从主体和地图数据中捕捉复杂模式与依赖关系。运动变换器(Motion Transformer, MTR)及其后续工作在Waymo开放运动基准测试中表现最优。然而,MTR使用预生成的静态意图点作为初始目标点,在特定交通场景下常与地图数据不匹配,导致目标点不可行或不合理。本文通过将场景相关的动态意图点融入MTR模型,解决了这一问题。该改进模型在Waymo开放运动数据集上进行训练与评估。结果表明,引入动态意图点显著提升了轨迹预测精度,尤其在长时预测中效果明显。此外,我们还分析了不符合地图约束或非法操作的真实轨迹,验证了方法对提升轨迹合理性的作用。
原文摘要 · Abstract (English)
In autonomous driving, accurately predicting the movements of other traffic participants is crucial, as it significantly influences a vehicle's planning processes. Modern trajectory prediction models strive to interpret complex patterns and dependencies from agent and map data. The Motion Transformer (MTR) architecture and subsequent work define the most accurate methods in common benchmarks such as the Waymo Open Motion Benchmark. The MTR model employs pre-generated static intention points as initial goal points for trajectory prediction. However, the static nature of these points frequently leads to misalignment with map data in specific traffic scenarios, resulting in unfeasible or unrealistic goal points. Our research addresses this limitation by integrating scene-specific dynamic intention points into the MTR model. This adaptation of the MTR model was trained and evaluated on the Waymo Open Motion Dataset. Our findings demonstrate that incorporating dynamic intention points has a significant positive impact on trajectory prediction accuracy, especially for predictions over long time horizons. Furthermore, we analyze the impact on ground truth trajectories which are not compliant with the map data or are illegal maneuvers.
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