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MTR++: Multi-Agent Motion Prediction with Symmetric Scene Modeling and Guided Intention Querying

IEEE Transactions on Pattern Analysis and Machine Intelligence(2024)

Saarland Informat Campus

Cited 7|Views121
Abstract
Motion prediction is crucial for autonomous driving systems to understandcomplex driving scenarios and make informed decisions. However, this task ischallenging due to the diverse behaviors of traffic participants and complexenvironmental contexts. In this paper, we propose Motion TRansformer (MTR)frameworks to address these challenges. The initial MTR framework utilizes atransformer encoder-decoder structure with learnable intention queries,enabling efficient and accurate prediction of future trajectories. Bycustomizing intention queries for distinct motion modalities, MTR improvesmultimodal motion prediction while reducing reliance on dense goal candidates.The framework comprises two essential processes: global intention localization,identifying the agent's intent to enhance overall efficiency, and localmovement refinement, adaptively refining predicted trajectories for improvedaccuracy. Moreover, we introduce an advanced MTR++ framework, extending thecapability of MTR to simultaneously predict multimodal motion for multipleagents. MTR++ incorporates symmetric context modeling and mutually-guidedintention querying modules to facilitate future behavior interaction amongmultiple agents, resulting in scene-compliant future trajectories. Extensiveexperimental results demonstrate that the MTR framework achievesstate-of-the-art performance on the highly-competitive motion predictionbenchmarks, while the MTR++ framework surpasses its precursor, exhibitingenhanced performance and efficiency in predicting accurate multimodal futuretrajectories for multiple agents.
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Key words
Trajectory,Transformers,Behavioral sciences,Encoding,Task analysis,Context modeling,Predictive models,Motion prediction,transformer,intention query,autonomous driving
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要点】:本文提出MTR和MTR++框架,解决多智能体运动预测问题,MTR++通过对称场景建模和相互指导的意图查询,实现多智能体之间的未来行为交互,提高多模态运动预测的性能和效率。

方法】:MTR采用transformer编码器-解码器结构,通过可学习的意图查询实现高效准确的未来轨迹预测;MTR++在此基础上扩展,同时预测多个智能体的多模态运动。

实验】:实验证明,MTR在多个具有竞争性的运动预测基准上达到最先进性能,而MTR++在准确预测多个智能体多模态未来轨迹方面,比MTR表现更佳且计算效率更高。