KinMo: Kinematic-aware Human Motion Understanding and Generation

• URL: http://arxiv.org/abs/2411.15472v1
• Date: Sat, 23 Nov 2024 06:50:11 GMT
• Title: KinMo: Kinematic-aware Human Motion Understanding and Generation
• Authors: Pengfei Zhang, Pinxin Liu, Hyeongwoo Kim, Pablo Garrido, Bindita Chaudhuri,
• Abstract summary: Controlling human motion based on text presents an important challenge in computer vision. Traditional approaches often rely on holistic action descriptions for motion synthesis. We propose a novel motion representation that decomposes motion into distinct body joint group movements.
• Score: 6.962697597686156
• License:
• Abstract: Controlling human motion based on text presents an important challenge in computer vision. Traditional approaches often rely on holistic action descriptions for motion synthesis, which struggle to capture subtle movements of local body parts. This limitation restricts the ability to isolate and manipulate specific movements. To address this, we propose a novel motion representation that decomposes motion into distinct body joint group movements and interactions from a kinematic perspective. We design an automatic dataset collection pipeline that enhances the existing text-motion benchmark by incorporating fine-grained local joint-group motion and interaction descriptions. To bridge the gap between text and motion domains, we introduce a hierarchical motion semantics approach that progressively fuses joint-level interaction information into the global action-level semantics for modality alignment. With this hierarchy, we introduce a coarse-to-fine motion synthesis procedure for various generation and editing downstream applications. Our quantitative and qualitative experiments demonstrate that the proposed formulation enhances text-motion retrieval by improving joint-spatial understanding, and enables more precise joint-motion generation and control. Project Page: {\small\url{https://andypinxinliu.github.io/KinMo/}}

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