A New Technique of Camera Calibration Based on X-Target

摘要：

A new technique of camera calibration based on Xtarget is proposed. Calibration steps include: judging gray saturation, adjusting verticality between optical axis and object surface, twodimensional plane camera calibration. In the calibration process, the improved Harris operator and spatial moment are used to detect sub-pixel X-target corners, and the accuracy achieves up to 0.1 pixels. It does not need to calculate the specific internal and external camera parameters, and only calculates the relations of world coordinates and image pixel coordinates, and the distortion model. The method has better accuracy and stability, and has been applied in the industrial field of embedded machine vision.

关键词： computer vision camera calibration sub-pixel optical axis verticality

作者: Ruilin Bai Jingjing Zhao Du Li Wei Meng

作者单位: Research Institute of Intelligent Control, Jiangnan University,214122, Wuxi, JiangSu, China

会议类型: 国际会议

会议名称: International Conference on Life System Modeling and Simulation,and International Conference on Intelligent Computing for Sustainable Energy and Environment(2010生命系统建模与仿真国际会议暨m2010可持续能源与环境智能计算国际会议)

会议地点: 无锡

会议语种:英文

页码: 39-46

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）