@inproceedings{caltag:2010,
    author = "Bradley Atcheson and Felix Heide and Wolfgang Heidrich"
    title = "{CALTag}: High Precision Fiducial Markers for Camera Calibration",
    booktitle = "$15^\mathrm{th}$ International Workshop on Vision, Modeling and Visualization",
    month = nov,
    year = 2010,
    address = "Siegen, Germany",
}