Camera assisted calibration of SCARA arms. - Hanqi Zhuang; Wen-Chiang Wu; Zvi S. Roth (IEEE Robotics Autom. Mag., 1996)

Camera calibration with a near-parallel (ill-conditioned) calibration board configuration. - Hanqi Zhuang; Wen-Chiang Wu (IEEE Trans. Robotics Autom., 1996)