摘要
编码结构光技术是一种简单、精度高并具备高速测量能力的光学非接触三维测量技术。该技术在获取三维信息中最重要的一步是如何正确的获取包裹相位所对应的阶次值,但阶次误差总会对实际重建结果造成严重的影响。为消除阶次误差的,在阶次噪声误差的形成机理的基础上,提出了一种无损阶次校正算法校正编码结构光技术所固有的阶次误差。该算法为通用算法,适用于所有的编码条纹投影技术;除此之外,方法还具备动态处理及无损校正的性能。仿真与实验依次对阶次噪声误差的形成机理、校正有效性和动态校正能力进行了验证。在有效性方面,该算法在仿真数据集的阶次误差校正率为99.9%,对孤立物体的校正率达99.7%;手型的动态测量实验结果验证了该算法具备阶次噪声的动态校正功效。
Code-based fringe projection profilometry（ CBFPP） is one kind of simple,high-speed and high-precision optical 3 D measurement technique. One of the most important steps in this technique is to obtain the fringe orders correctly. However,the error of fringe orders always affects the measurement precision. To deal with this problem,a denoising framework to correct the intrinsic fringe order noise is proposed. The algorithm is suitable for all fringe orders correction work of CBFPP. Moreover,the method has the ability of noninvasive and dynamic fringe order correction. Simulation and experiment results indicate the effectiveness of the mechanism of different fringe order noises,the validation and the dynamic correction ability of the proposed algorithm. Simulation result shows that the correction efficiency can reach 99. 9% and the experiment shows that the successful rate can reach 99. 7% when measuring the isolated object. The dynamic measurement results show that the algorithm has the ability to correct the fringe order noise of a moving hand.
作者
邓吉
李健
封皓
曾周末
Deng Ji;Li Jian;Feng Hao;Zeng Zhoumo(The State Key Laboratory of Precision Measurement Technology and Instruments,Tianjin University,Tianjin 300072,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2018年第8期250-258,共9页
Chinese Journal of Scientific Instrument
基金
国家重大科学仪器设备开发专项(2016YFF0101802)资助
关键词
条纹投影技术
三维测量
阶次误差校正
无损处理
fringe projection profilometry
3D measurement
fringe order correction
noninvasive processing
