Rethinking convolutional neural networks for trajectory refinement

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In this work, we revisit CNN architectures for sequence modeling, focusing on human trajectory prediction tasks. Forecasting human trajectories has been extensively explored as a sequence modeling problem, with many studies utilizing CNNs. Unlike conventional approaches that apply 1D convolution or 2D convolution over heatmap representations, we propose a novel architecture that applies 2D convolution directly over raw trajectory coordinates. Our method employs a coarse-to-fine strategy to refine trajectory predictions. We evaluated our approach on the ETH/UCY and Stanford Drone Datasets, demonstrating significant improvements. Our method sets a new state-of-the-art on the Stanford Drone Dataset, improving prediction accuracy and outperforming existing methods.