Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Towards Better Predictive Models: The Role of Density in Pedestrian Trajectory Predictions

Version 1 : Received: 28 February 2024 / Approved: 28 February 2024 / Online: 28 February 2024 (17:04:25 CET)

A peer-reviewed article of this Preprint also exists.

Korbmacher, R.; Tordeux, A. Toward Better Pedestrian Trajectory Predictions: The Role of Density and Time-to-Collision in Hybrid Deep-Learning Algorithms. Sensors 2024, 24, 2356. Korbmacher, R.; Tordeux, A. Toward Better Pedestrian Trajectory Predictions: The Role of Density and Time-to-Collision in Hybrid Deep-Learning Algorithms. Sensors 2024, 24, 2356.

Abstract

Predicting human trajectories poses a significant challenge due to the complex interplay of pedestrian behavior, which is influenced by environmental layout and interpersonal dynamics. This complexity is further compounded by variations in scene density. To address this, we introduce a novel dataset from the Festival of Lights in Lyon 2022, characterized by a wide range of densities (0.2-2.2 ped/m2). Our analysis demonstrates that density-based classification of data can significantly enhance the accuracy of predictive algorithms. We propose an innovative two-stage processing approach, surpassing current state-of-the-art methods in performance. Additionally, we utilize a collision-based error metric to better account for collisions in trajectory predictions. Our findings indicate that the effectiveness of this error metric is density-dependent, offering prediction insights. This study not only advances our understanding of human trajectory prediction in dense environments but also presents a methodological framework for integrating density considerations into predictive modeling, thereby improving algorithmic performance and collision avoidance.

Keywords

Pedestrian trajectory prediction; deep learning; pedestrian trajectory dataset; density-based classification; collision avoidance

Subject

Computer Science and Mathematics, Artificial Intelligence and Machine Learning

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