DiffuTraj: A Stochastic Vessel Trajectory Prediction Approach via Guided Diffusion Process

• URL: http://arxiv.org/abs/2410.09550v1
• Date: Sat, 12 Oct 2024 14:50:18 GMT
• Title: DiffuTraj: A Stochastic Vessel Trajectory Prediction Approach via Guided Diffusion Process
• Authors: Changlin Li, Yanglei Gan, Tian Lan, Yuxiang Cai, Xueyi Liu, Run Lin, Qiao Liu,
• Abstract summary: Vessel maneuvers, characterized by their inherent complexity and indeterminacy, require vessel trajectory prediction system. Conventional trajectory prediction methods utilize latent variables to represent the multi-modality of vessel motion. We explicitly simulate the transition of vessel motion from uncertainty towards a state of certainty.
• Score: 23.42712306116432
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Maritime vessel maneuvers, characterized by their inherent complexity and indeterminacy, requires vessel trajectory prediction system capable of modeling the multi-modality nature of future motion states. Conventional stochastic trajectory prediction methods utilize latent variables to represent the multi-modality of vessel motion, however, tends to overlook the complexity and dynamics inherent in maritime behavior. In contrast, we explicitly simulate the transition of vessel motion from uncertainty towards a state of certainty, effectively handling future indeterminacy in dynamic scenes. In this paper, we present a novel framework (\textit{DiffuTraj}) to conceptualize the trajectory prediction task as a guided reverse process of motion pattern uncertainty diffusion, in which we progressively remove uncertainty from maritime regions to delineate the intended trajectory. Specifically, we encode the previous states of the target vessel, vessel-vessel interactions, and the environment context as guiding factors for trajectory generation. Subsequently, we devise a transformer-based conditional denoiser to capture spatio-temporal dependencies, enabling the generation of trajectories better aligned for particular maritime environment. Comprehensive experiments on vessel trajectory prediction benchmarks demonstrate the superiority of our method.

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