Ding Shinan
College of Comic and Animation, Kyungil University, Gyeongsan, Korea.
PLoS One. 2025 Feb 25;20(2):e0318979. doi: 10.1371/journal.pone.0318979. eCollection 2025.
In the field of human animation generation, the existing technology is often limited by the dependence on large-scale data sets, and it is difficult to capture subtle dynamic changes when processing motion transitions, resulting in insufficient animation fluency and realism. In order to improve the naturalness and diversity of human animation generation, a method combining motion smoothing algorithm and motion segmentation algorithm is proposed. Firstly, the tree-level model based on human skeleton topology and bidirectional unbiased Kalman filter are used for noise reduction pre-processing of motion data to improve the accuracy of motion capture. Then, combining the discriminant analysis algorithm based on sparse reconstruction and the multi-scale temporal association segmentation algorithm, the key motion segments of the behavior pattern change are identified adaptively. The experimental results show that the accuracy of the proposed algorithm reaches 0.96 in coarse-grained segmentation and 0.91 in fine-grained segmentation, and the segmentation time is 15 seconds on average, which significantly exceeds the prior art. In addition, the algorithm shows superior results in color fidelity, detail representation, motion fluency, frame-to-frame coherence, overall animation consistency, action authenticity, and character expressiveness, and the average user satisfaction is above 0.85. The research not only enhances the naturalness and diversity of human body animation, but also provides a new impetus for technological advances in computer graphics, virtual reality and augmented reality.
在人体动画生成领域,现有技术常常受到对大规模数据集的依赖的限制,并且在处理运动过渡时难以捕捉细微的动态变化,导致动画流畅性和真实感不足。为了提高人体动画生成的自然度和多样性,提出了一种将运动平滑算法和运动分割算法相结合的方法。首先,基于人体骨骼拓扑结构的树级模型和双向无偏卡尔曼滤波器用于对运动数据进行降噪预处理,以提高运动捕捉的准确性。然后,结合基于稀疏重建的判别分析算法和多尺度时间关联分割算法,自适应地识别行为模式变化的关键运动片段。实验结果表明,所提算法在粗粒度分割中的准确率达到0.96,在细粒度分割中的准确率达到0.91,分割时间平均为15秒,显著超过现有技术。此外,该算法在色彩保真度、细节表现、运动流畅性、帧间连贯性、整体动画一致性、动作真实性和角色表现力方面均表现出优异的效果,平均用户满意度高于0.85。该研究不仅提高了人体动画的自然度和多样性,也为计算机图形学、虚拟现实和增强现实的技术进步提供了新的动力。