LiFCal: Online Light Field Camera Calibration via Bundle Adjustment
<|reference_start|>LiFCal: Online Light Field Camera Calibration via Bundle Adjustment: We propose LiFCal, a novel geometric online calibration pipeline for MLA-based light field cameras. LiFCal accurately determines model parameters from a moving camera sequence without precise calibration targets, integrating arbitrary metric scaling constraints. It optimizes intrinsic parameters of the light field camera model, the 3D coordinates of a sparse set of scene points and camera poses in a single bundle adjustment defined directly on micro image points.   We show that LiFCal can reliably and repeatably calibrate a focused plenoptic camera using different input sequences, providing intrinsic camera parameters extremely close to state-of-the-art methods, while offering two main advantages: it can be applied in a target-free scene, and it is implemented online in a complete and continuous pipeline.   Furthermore, we demonstrate the quality of the obtained camera parameters in downstream tasks like depth estimation and SLAM.   Webpage: https://lifcal.github.io/<|reference_end|>
@article{fleith2024lifcal:,
    title={LiFCal: Online Light Field Camera Calibration via Bundle Adjustment},
    author={Aymeric Fleith, Doaa Ahmed, Daniel Cremers, Niclas Zeller},
    journal={arXiv preprint arXiv:2408.11682},
    year={2024},
    archivePrefix={arXiv},
    eprint={2408.11682},
    primaryClass={eess.IV cs.CV}
}