A closed-form solution to eye-to-hand calibration towards visual grasping

Abstract

Purpose

The purpose of this paper is to propose a method that calibrates the hand-eye relationship for eye-to-hand configuration and afterwards a rectification to improve the accuracy of general calibration.

Design/methodology/approach

The hand-eye calibration of eye-to-hand configuration is summarized as a equation AX = XB which is the same as in eye-in-hand calibration. A closed-form solution is derived. To abate the impact of noise, a rectification is conducted after the general calibration.

Findings

Simulation and actual experiments confirm that the accuracy of calibration is obviously improved.

Originality/value

Only a calibration plane is required for the hand-eye calibration. Taking the impact of noise into account, a rectification is carried out after the general calibration and, as a result, that the accuracy is obviously improved. The method can be applied in many actual applications.

Citation

Pan, H., Wang, N.L. and Qin, Y.S. (2014), "A closed-form solution to eye-to-hand calibration towards visual grasping", Industrial Robot, Vol. 41 No. 6, pp. 567-574. https://doi.org/10.1108/IR-07-2014-0365