Continuous-Time Human Motion Field from Events

Ziyun Wang; Ruijun Zhang; Zi-Yan Liu; Yufu Wang; Kostas Daniilidis

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arXiv · 2412.01747

Continuous-Time Human Motion Field from Events

Ziyun Wang·Ruijun Zhang·Zi-Yan Liu·Yufu Wang·Kostas Daniilidis

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Abstract

This paper addresses the challenges of estimating a continuous-time human motion field from a stream of events. Existing Human Mesh Recovery (HMR) methods rely predominantly on frame-based approaches, which are prone to aliasing and inaccuracies due to limited temporal resolution and motion blur. In this work, we predict a continuous-time human motion field directly from events by leveraging a recurrent feed-forward neural network to predict human motion in the latent space of possible human motions. Prior state-of-the-art event-based methods rely on computationally intensive optimization across a fixed number of poses at high frame rates, which becomes prohibitively expensive as we increase the temporal resolution. In comparison, we present the first work that replaces traditional discrete-time predictions with a continuous human motion field represented as a time-implicit function, enabling parallel pose queries at arbitrary temporal resolutions. Despite the promises of event cameras, few benchmarks have tested the limit of high-speed human motion estimation. We introduce Beam-splitter Event Agile Human Motion Dataset-a hardware-synchronized high-speed human dataset to fill this gap. On this new data, our method improves joint errors by 23.8% compared to previous event human methods while reducing the computational time by 69%.

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BibTeX RIS

Ziyun Wang, Ruijun Zhang, Zi-Yan Liu, Yufu Wang, Kostas Daniilidis. 2024-12-02. Continuous-Time Human Motion Field from Events. https://arxiv.org/abs/2412.01747

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