@article{gravcalsingleimagecalibrationofimugravit,
  title = {GravCal: Single-Image Calibration of IMU Gravity Priors with Per-Sample Confidence},
  author = {Haichao Zhu and Qian Zhang},
  year = {2026},
  eprint = {2603.19654},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.19654},
}