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Influence of path curvature on collision avoidance behaviour between two walkers

Sean Lynch 1, 2 Richard Kulpa 1, 2 Laurentius Antonius Meerhoff 1, 2 Anthony Sorel 1, 2 Julien Pettré 3 Anne-Hélène Olivier 1, 2
1 MIMETIC - Analysis-Synthesis Approach for Virtual Human Simulation
UR2 - Université de Rennes 2, Inria Rennes – Bretagne Atlantique , IRISA-D6 - MEDIA ET INTERACTIONS
3 RAINBOW - Sensor-based and interactive robotics
Abstract : Navigating crowded community spaces requires interactions with pedestrians that follow rectilinear and curvilinear trajectories. In the case of rectilinear trajectories, it has been shown that the perceived action opportunities of the walkers might be afforded based on a future distance of closest approach. However, little is known about collision avoidance behaviours when avoiding walkers that follow curvilinear trajectories. Twenty-two participants were immersed in a virtual environment and avoided a virtual human (VH) that followed either a rectilinear path or a curvilinear path with a 5 m or 10 m radius curve at various distances of closest approach. Compared to a rectilinear path (control condition), the curvilinear path with a 5 m radius yielded more collisions when the VH approached from behind the participant and more inversions when the VH approached from in-front. During each trial, the evolution of the future distance of closest approach showed similarities between rectilinear paths and curvilinear paths with a 10 m radius curve. Overall, with few collisions and few inversions of crossing order, we can conclude that participants were capable of predicting future distance of closest approach of virtual walkers that followed curvilinear trajectories. The task was solved with similar avoidance adaptations to those observed for rectilinear interactions. These findings should inform future endeavors to further understand collision avoidance strategies and the role of—for example—non-constant velocities.
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Contributor : Anne-Hélène Olivier Connect in order to contact the contributor
Submitted on : Tuesday, November 17, 2020 - 9:46:44 AM
Last modification on : Tuesday, October 19, 2021 - 11:04:42 AM



Sean Lynch, Richard Kulpa, Laurentius Antonius Meerhoff, Anthony Sorel, Julien Pettré, et al.. Influence of path curvature on collision avoidance behaviour between two walkers. Experimental Brain Research, Springer Verlag, 2021, 239 (1), pp.329-340. ⟨10.1007/s00221-020-05980-y⟩. ⟨hal-03009022⟩



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