Authors

Simon Parkinson

Publications 2

Preprint Open access

Caption-Mediated Perceived-Safety Estimation for Pedestrian Routing

Simon Parkinson, Paloma Liu, Wei Zheng et al. · 2026

This paper presents an explainable approach to pedestrian routing, in which perceived safety is estimated from street-level imagery through an explicit natural-language intermediate representation. A vision--language model caption is generated and stored before any scoring is undertaken, and the perceived-risk class is …

Preprint Open access

Template Ageing and Longitudinal Verification in Fixed-Text Keystroke Dynamics: A Subject-Disjoint Study Across Eight Weeks

Simon Parkinson, Saad Khan, Na Liu et al. · 2026

Behavioural biometric templates are widely believed to degrade as the gap between enrolment and verification grows, but few studies measure this template ageing effect directly under controlled conditions. We collected a longitudinal dataset of 40 fixed passwords, each typed four times per weekly session over eight con …

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