相移轮廓术周期性光源干扰  

Periodic Light Disturbance in Fringe Projection Profilometry

作　　者：肖毅鹏 石朝侠[1] 达飞鹏[2,3] Yipeng Xiao;Chaoxia Shi;Feipeng Da(School of Computer Science and Engineering,Nanjing University of Technology,Nanjing,Jiangsu 210094,China;School of Automation,Southeast University,Nanjing,Jiangsu 210096,China;Key Laboratory of Measurement and Control of Complex Systems of Engineering,Ministry of Education,Nanjing,Jiangsu 211096,China)

机构地区：[1]南京理工大学计算机学院,江苏南京210094 [2]东南大学自动化学院,江苏南京210096 [3]复杂工程系统测量与控制教育部重点实验室,江苏南京211096

出　　处：《光学学报》2020年第15期80-89,共10页Acta Optica Sinica

基　　金：国家自然科学基金(61371040);深圳市知识创新计划基础研究项目(JCYJ20180306174455080)。

摘　　要：随着数字投影技术的发展,基于光栅投影的三维测量技术在众多领域中得到了广泛应用。但是大多数应用场景下,环境中都存在着各种周期性的光源,对光栅投影的成像过程造成干扰,在相位提取的过程中引入非线性误差,进而影响三维重建的精度。针对上述问题,从时域上分析环境光源的干扰因素,通过采集分析周期性环境光影响的图像并建立光源模型,为此提出一种高精度的相位补偿算法。实验证明所提算法可有效抑制由环境光源带来的相位非线性误差。With the development of the digital projection technology,the three-dimensional(3D)measurement technology based on fringe projection is being widely used in many fields.However,in most application environments,there are various periodic light sources in most application environments,which cause interference to the imaging process of grating projection.Nonlinear errors are introduced in the phase extraction process,thus affecting the accuracy of 3D reconstruction.To solve this problem,the interference factors of the ambient light source are analyzed in the time domain,and the light source model is established by collecting and analyzing the images affected by the periodic ambient light.For this reason,a high-precision phase compensation algorithm is proposed.Experiments illustrate that the proposed algorithm can effectively suppress the phase nonlinear error caused by the environmental light sources.

关 键 词：测量 三维测量 光栅投影 周期性噪声 牛顿迭代 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]