EgoExo-Fitness: Towards Egocentric and Exocentric Full-Body Action Understanding

• URL: http://arxiv.org/abs/2406.08877v2
• Date: Tue, 16 Jul 2024 09:35:49 GMT
• Title: EgoExo-Fitness: Towards Egocentric and Exocentric Full-Body Action Understanding
• Authors: Yuan-Ming Li, Wei-Jin Huang, An-Lan Wang, Ling-An Zeng, Jing-Ke Meng, Wei-Shi Zheng,
• Abstract summary: EgoExo-Fitness is a new full-body action understanding dataset. It features fitness sequence videos recorded from synchronized egocentric and fixed exocentric cameras. EgoExo-Fitness provides new resources to study egocentric and exocentric full-body action understanding.
• Score: 27.881857222850083
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present EgoExo-Fitness, a new full-body action understanding dataset, featuring fitness sequence videos recorded from synchronized egocentric and fixed exocentric (third-person) cameras. Compared with existing full-body action understanding datasets, EgoExo-Fitness not only contains videos from first-person perspectives, but also provides rich annotations. Specifically, two-level temporal boundaries are provided to localize single action videos along with sub-steps of each action. More importantly, EgoExo-Fitness introduces innovative annotations for interpretable action judgement--including technical keypoint verification, natural language comments on action execution, and action quality scores. Combining all of these, EgoExo-Fitness provides new resources to study egocentric and exocentric full-body action understanding across dimensions of "what", "when", and "how well". To facilitate research on egocentric and exocentric full-body action understanding, we construct benchmarks on a suite of tasks (i.e., action classification, action localization, cross-view sequence verification, cross-view skill determination, and a newly proposed task of guidance-based execution verification), together with detailed analysis. Code and data will be available at https://github.com/iSEE-Laboratory/EgoExo-Fitness/tree/main.

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