arXiv AI

Diffusion-Based Generation of Gait Trajectories

The paper presents a method for generating lower‑limb joint‑angle gait trajectories using conditional diffusion models. It compares a baseline transformer diffusion model with a controllable diffusion transformer that includes adaptive normalization and classifier‑free guidance. Experiments on 4,590 gait cycles demonstrate that these diffusion models can produce realistic, periodic gait patterns while allowing some control over gait characteristics such as step length.

arXiv AI
Oct 9

PhysMoDPO: Physically-Plausible Humanoid Motion with Preference Optimization

PhysMoDPO is a Direct Preference Optimization framework that integrates a Whole-Body Controller into the training of diffusion models for text-conditioned human motion generation. By using physics-based and task-specific rewards to assign preferences to synthesized trajectories, it ensures that the resulting motions are both physically realistic and faithful to the original text instructions. Experiments on simulated robots and a real G1 humanoid robot show consistent improvements in physical realism and task performance, including zero‑shot motion transfer.

By Yangsong Zhang, Anujith Muraleedharan, Rikhat Akizhanov, Abdul Ahad Butt, G\"ul Varol, Pascal Fua, Fabio Pizzati, Ivan Laptev
arXiv Computer Vision
Aug 21

Silhouette-based Gait Foundation Model

arXiv:2512. 00691v2 Announce Type: replace Abstract: Gait patterns play a critical role in human identification and healthcare analytics, yet current progress remains constrained by small, narrowly designed models that fail to scale or generalize.

By Dingqiang Ye, Chao Fan, Kartik Narayan, Bingzhe Wu, Chengwen Luo, Jianqiang Li, Vishal M. Patel
arXiv Machine Learning
Aug 6

Imitation Learning from Human Motion Alone Does Not Guarantee Biomechanically Plausible Gait Kinetics

arXiv:2603. 12408v3 Announce Type: replace-cross Abstract: Motion imitation learning (IL) is increasingly used in robotics and human gait modeling, yet its ability to recover biomechanically consistent joint moments without explicit kinetic information remains unclear.

By Xinyi Liu, Jangwhan Ahn, Edgar Lobaton, Jennie Si, He Huang