arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2406.06211cs.CV
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iMotion-LLM:基于指令的轨迹生成

iMotion-LLM: Instruction-Conditioned Trajectory Generation

King Abdullah University of Science and Technology (KAUST)(卡塔尔国王阿卜杜勒阿齐兹大学科学与技术学院);Meta Reality Labs(Meta现实实验室)

Abdulwahab Felemban, Nussair Hroub, Jian Ding, Eslam Abdelrahman, Xiaoqian Shen, Abduallah Mohamed, Mohamed Elhoseiny

AI总结:

iMotion-LLM通过结合预训练LLM与轨迹预测模块,实现基于文本指令的交互式运动生成,提升自动驾驶中的轨迹生成准确性和安全性。

摘要:

我们介绍了iMotion-LLM,一种集成了轨迹预测模块的大型语言模型(LLM),用于交互式运动生成。与传统方法不同,它基于文本指令生成可行且安全对齐的轨迹,使驾驶行为具有适应性和上下文感知能力。它结合了编码器-解码器多模态轨迹预测模型与通过LoRA微调的预训练LLM,将场景特征投影到LLM输入空间,并将特殊标记映射到轨迹解码器,以实现基于文本的交互和可解释的驾驶。为了支持这一框架,我们引入了两个数据集:1)InstructWaymo,是Waymo Open Motion Dataset的扩展,包含基于方向的运动指令;2)Open-Vocabulary InstructNuPlan,包含安全对齐的指令-描述词对及其对应的安全轨迹场景。我们的实验验证了指令条件化能够生成符合预期条件的轨迹。iMotion-LLM在上下文理解方面表现出色,方向可行性检测的平均准确率为84%,开放式词汇指令的安全评估平均准确率为96%。这项工作为自动驾驶中的文本引导运动生成奠定了基础,支持模拟数据生成、模型可解释性和轨迹生成模型的稳健安全对齐测试。我们的代码、预训练模型和数据集可在:https://vision-cair.github.io/iMotion-LLM/ 上获取。

英文摘要:

We introduce iMotion-LLM, a large language model (LLM) integrated with trajectory prediction modules for interactive motion generation. Unlike conventional approaches, it generates feasible, safety-aligned trajectories based on textual instructions, enabling adaptable and context-aware driving behavior. It combines an encoder-decoder multimodal trajectory prediction model with a pre-trained LLM fine-tuned using LoRA, projecting scene features into the LLM input space and mapping special tokens to a trajectory decoder for text-based interaction and interpretable driving. To support this framework, we introduce two datasets: 1) InstructWaymo, an extension of the Waymo Open Motion Dataset with direction-based motion instructions, and 2) Open-Vocabulary InstructNuPlan, which features safety-aligned instruction-caption pairs and corresponding safe trajectory scenarios. Our experiments validate that instruction conditioning enables trajectory generation that follows the intended condition. iMotion-LLM demonstrates strong contextual comprehension, achieving 84% average accuracy in direction feasibility detection and 96% average accuracy in safety evaluation of open-vocabulary instructions. This work lays the foundation for text-guided motion generation in autonomous driving, supporting simulated data generation, model interpretability, and robust safety alignment testing for trajectory generation models. Our code, pre-trained model, and datasets are available at: https://vision-cair.github.io/iMotion-LLM/.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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