摘要
为提高基于编码光栅的物体三维轮廓重构的精度,消除多频时间相位解包裹算法的相位跳跃性误差。采用一种改进的三频相位解包裹算法,通过相位与光栅节距的关系,实现了精准的相位解包裹。相比于传统方法和已提出的方法,提出的方法解相精度更高。通过仿真分析可得,改进方法展开相位无跳跃性误差,无需相位矫正,且在外加较大干扰的情况下也不会产生2π周期性误差,减小了相位解包裹的非线性误差。通过实验分析可得该方法实现了较高精度的物体三维轮廓重构。
In order to improve the accuracy of object three-dimensional contour reconstruction based on coded grating,and to eliminate phase jump error of multi-frequency time phase unwrapping algorithm,in this paper,an improved three-frequency phase unwrapping algorithm is used to achieve accurate phase unwrapping through the relationship between phase and grating pitch.Compared with the traditional method,the method proposed in this paper has higher accuracy.The simulation results show that the method has no jumping error in phase unwrapping,no phase correction,no 2π periodic error in the case of large disturbance,and reduces the non-linear error of phase unwrapping.Simulation analysis shows that the method can achieve high accuracy 3D reconstruction of objects.
作者
李忠虎
王露玲
LI Zhong-hu;WANG Lu-ling(School of Information Engineering,Inner Mongolia University of Science and Technology,Baotou,Inner Mongolia 014010,China)
出处
《计算机仿真》
北大核心
2020年第2期289-293,共5页
Computer Simulation
基金
国家自然科学基金项目(61362023)
内蒙古自治区自然科学基金项目(2018LH06001)。
关键词
结构光
相位解包裹
多频相位
轮廓测量
Structured light
Phase unwrapping
Multifrequency phase
Profilometry
