New Method for calibration of line structure-light vision sensor based on robot system

Abstract

Based on the existing methods for calibration,a novel calibration approach of vision sensor with line structure-light based on robot system is proposed.A target plane with dot matrix which is especially designed for light plane alignment provides help for extracting characteristic points without the additional calibration of light plane.Then,a linear two-stage calibration algorithm is put forward for resolving parameter of sensor model,so that,the operation of calibration is simplified and the efficiency is increased.Experiment results show that this method is practical,and the measurement accuracy is better than 0.06 mm.