Author

You Li

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Preprint Sep 2026

FOCUS: Foot Observation Confidence for Robust Humanoid Proprioceptive Odometry

Foot forward kinematics (FK) is widely used to improve proprioceptive legged odometry by providing reliable velocity constraints during foot support. Existing contact-aided estimators generally rely on binary contact decisions to determine whether the FK measurements of an entire foot should be trusted. However, contac...

Kaixin Feng, Ang Li, Shaoxiong Zhang et al. · 0 citations

Preprint Sep 2026

OmniCalib: Target-Free, Task-Structured Self-Calibration for Humanoid Robots

Assembly, wear, and component replacement perturb the sensor extrinsics and joint zeros encoded by a humanoid CAD model. Existing procedures calibrate one sensor pair or require external fiducials. Using only robot-native motion and onboard sensing, we present OmniCalib, a target-free workflow that calibrates the full...

Kai-Xiang Lu, Hai-Yu Lan, Chun-Xia Qiao et al. · 0 citations

Preprint Sep 2026

Contact-Constrained Lower-Limb Joint-Offset Calibration for Humanoid Robots

Accurate joint encoder offsets are essential for kinematic consistency in humanoid lower limbs, yet existing calibration methods typically require external motion-capture systems or fiducial targets. We present a self-contained calibration framework exploiting only onboard joint encoders and a pelvis-mounted IMU during...

Kai-Xiang Lu, Hai-Yu Lan, Chun-Xia Qiao et al. · 0 citations