Hybrid attention adaptive sampling network for human pose estimation in videos

Human pose estimation in videos often uses sampling strategies like sparse uniform sampling and keyframe selection. Sparse uniform sampling can miss spatial-temporal relationships, while keyframe selection using CNNs struggles to fully capture these relationships and is costly. Neither strategy ensures the reliability of pose data from single-frame estimators. To address these issues, this article proposes an efficient and effective hybrid attention adaptive sampling network. This network includes a dynamic attention module and a pose quality attention module, which comprehensively consider the dynamic information and the quality of pose data. Additionally, the network improves efficiency through compact uniform sampling and parallel mechanism of multi-head self-attention. Our network is compatible with various video-based pose estimation frameworks and demonstrates greater robustness in high degree of occlusion, motion blur, and illumination changes, achieving state-of-the-art performance on Sub-JHMDB dataset.