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图学学报 ›› 2026, Vol. 47 ›› Issue (3): 616-628.DOI: 10.11996/JG.j.2095-302X.2026030616

• 计算机图形学与虚拟现实 • 上一篇    下一篇

联合零范数稀疏和时序差分低秩的运动捕获数据恢复算法

胡文玉1,2, 徐浩1, 邱熙雯1, 易云1,2()   

  1. 1 赣南师范大学数学与计算机科学学院江西 赣州 341000
    2 江西省教育厅数据科学与人工智能重点实验室江西 赣州 341000
  • 收稿日期:2025-11-03 接受日期:2026-03-27 出版日期:2026-06-30 发布日期:2026-06-30
  • 通讯作者:易云,E-mail:yiyun@gnnu.edu.cn
  • 基金资助:
    国家自然科学基金(62266002);国家自然科学基金(62362003);江西省自然科学基金(20252BAC250007);赣南师范大学研究生创新基金项目(YCXJ24-A12)

Motion capture data recovery by combining zero-norm sparsity and temporal difference low rank

HU Wenyu1,2, XU Hao1, QIU Xiwen1, YI Yun1,2()   

  1. 1 School of Mathematics and Computer Science, Gannan Normal University, Ganzhou Jiangxi 341000, China
    2 Key Laboratory of Data Science and Artificial Intelligence of Jiangxi Education Institutes, Ganzhou Jiangxi 341000, China
  • Received:2025-11-03 Accepted:2026-03-27 Published:2026-06-30 Online:2026-06-30
  • Contact: YI Yun,E-mail:yiyun@gnnu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(62266002);National Natural Science Foundation of China(62362003);Natural Science Foundation of Jiangxi Province(20252BAC250007);Postgraduate Innovation Fund Project of Gannan Normal University(YCXJ24-A12)

摘要:

针对运动捕获数据在采集与传输过程中普遍存在的噪声干扰以及标记点缺失问题,提出一种联合 ${l}_{0}$范数稀疏和时序差分低秩极小化的运动捕获数据恢复模型 (ZTDL)。首先,引入时序差分的低秩正则项以刻画运动捕获数据的全局低秩性与时序光滑性,同时结合 ${l}_{0}$范数和Frobenius范数分别表征稀疏缺失噪声和高斯叠加噪声。其次,利用 ${l}_{0}$范数邻近算子的特殊性质将非凸恢复模型等价地转换为含有二值掩码矩阵的双变量优化问题进行求解,所得模型能够同时精确估计缺失区域与恢复运动捕获数据。随后,采用交替方向乘子法和(逆)离散余弦变换对模型进行快速求解。在理论上,严格证明了算法能够依坐标收敛于局部极小解。最后,在CMU数据集和HDM05数据集上,将ZTDL算法与多种经典算法,如TSMC、TRNN、IRNN-Lp、TSPN算法与深度学习算法等,进行大量的数值对比实验。恢复误差和视觉效果比较结果表明,ZTDL无论是估计缺失区域还是恢复失真的运动捕获数据都具有显著的优越性。

关键词: 运动捕获数据, 时序差分, 稀疏低秩, 非凸优化, 零范数

Abstract:

To address the prevalent noise interference and missing-marker problem during the collection and transmission of Motion Capture (MoCap) data, a recovery model combining the Zero-norm sparsity and Temporal Differential Low-rank minimization (ZTDL) was proposed. Firstly, a temporal difference low-rank regularization term was introduced to capture the global low-rank property and temporal smoothness of MoCap data. Besides, the l0 norm and the Frobenius norm were employed to characterize sparse missing noise and additive Gaussian noise. Secondly, the non-convex recovery model was transformed into the optimization problem involving a binary mask matrix by exploiting the properties of the l0 norm. This model enabled the simultaneous estimation of missing regions and the restoration of MoCap data. The optimization problem was efficiently solved using the Alternating Direction Method of Multipliers (ADMM) framework sand the (inverse) Discrete Cosine Transform (DCT/IDCT). The algorithm was rigorously proven to converge to a local minimum in a coordinate-wise manner in theory. Finally, extensive comparative experiments were conducted on the benchmark CMU and HDM05 datasets. The ZTDL algorithm was evaluated against a range of classical methods such as TSMC, TRNN, IRNN-Lp, and TSPN, as well as deep learning approaches. The restoration results, including recovery error and visual effect, demonstrated the significant superiority of ZTDL in both missing-region estimation and corrupted-data restoration.

Key words: motion capture data, temporal difference, sparse and low-rank, non-convex optimization, zero-norm

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