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arXiv 2512.02727cs.CVcs.AIcs.LG

DF-Mamba:用于手姿估计的可变形状态空间建模

DF-Mamba: Deformable State Space Modeling for 3D Hand Pose Estimation in Interactions

Institute of Science Tokyo(东京科学研究所);Denso IT Laboratory(Denso IT实验室);The University of Tokyo(东京大学)

Yifan Zhou, Takehiko Ohkawa, Guwenxiao Zhou, Kanoko Goto, Takumi Hirose, Yusuke Sekikawa, Nakamasa Inoue

AI总结:

DF-Mamba通过可变形状态空间建模提升3D手姿估计的鲁棒性和精度,优于现有方法。

摘要:

在建模日常手交互时,严重的遮挡问题(如双手重叠)常常导致困难,这突显了在3D手姿估计(HPE)中需要鲁棒的特征学习。为了处理这种遮挡的手图像,必须有效地学习局部图像特征(例如遮挡的关节)与全局上下文(例如来自关节间、手间或场景的线索)之间的关系。然而,目前大多数3D HPE方法仍然依赖ResNet进行特征提取,而这种CNN的归纳偏置可能不是最优的,因为其有限的能力无法建模全局上下文。为了解决这一限制,我们提出了一种有效的、高效的框架,用于在3D HPE中使用最近的状态空间建模(即Mamba)进行视觉特征提取,称为可变形Mamba(DF-Mamba)。DF-Mamba旨在通过Mamba的可选状态建模和所提出的可变形状态扫描,捕捉超出标准卷积的标准上下文线索。具体而言,对于卷积后的局部特征,我们的可变形扫描在图像内聚合这些特征,同时选择性地保留表示全局上下文的有用线索。这种方法显著提高了结构化3D HPE的准确性,推理速度与ResNet-50相当。我们的实验涉及在五个不同的数据集上进行广泛的评估,包括单手和双手场景、手-手交互和手-物体交互,以及基于RGB和深度的估计。DF-Mamba在所有数据集上都优于最新的图像后端,包括VMamba和Spatial-Mamba,并实现了最先进的性能。

英文摘要:

Modeling daily hand interactions often struggles with severe occlusions, such as when two hands overlap, which highlights the need for robust feature learning in 3D hand pose estimation (HPE). To handle such occluded hand images, it is vital to effectively learn the relationship between local image features (e.g., for occluded joints) and global context (e.g., cues from inter-joints, inter-hands, or the scene). However, most current 3D HPE methods still rely on ResNet for feature extraction, and such CNN's inductive bias may not be optimal for 3D HPE due to its limited capability to model the global context. To address this limitation, we propose an effective and efficient framework for visual feature extraction in 3D HPE using recent state space modeling (i.e., Mamba), dubbed Deformable Mamba (DF-Mamba). DF-Mamba is designed to capture global context cues beyond standard convolution through Mamba's selective state modeling and the proposed deformable state scanning. Specifically, for local features after convolution, our deformable scanning aggregates these features within an image while selectively preserving useful cues that represent the global context. This approach significantly improves the accuracy of structured 3D HPE, with comparable inference speed to ResNet-50. Our experiments involve extensive evaluations on five divergent datasets including single-hand and two-hand scenarios, hand-only and hand-object interactions, as well as RGB and depth-based estimation. DF-Mamba outperforms the latest image backbones, including VMamba and Spatial-Mamba, on all datasets and achieves state-of-the-art performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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