摘要
为了改善高反光对象表面的三维重建的质量,提出了一种基于二值相移编码光栅投影的相位融合算法。该算法对饱和相位误差进行分析,利用二值相移投影图案的周期性与对称性实现了饱和相位误差的检测。研究结果表明,相比于基于光照强度判断的饱和误差检测方法,所提方法可以准确检测出存在饱和误差的区域。与修复前相比,修复后的饱和相位误差的均方根值减少了95.7%,最大相位误差减少了96.1%。与传统的检测方法相比,在使用更少测量组的情况下,替换后的饱和相位误差的均方根值减少了16.7%。所提方法可以有效地重建出高反光物体的表面轮廓,且精度更高,无需非线性校正,抗干扰能力强。
In order to improve the accuracy of three-dimensional reconstructed high-reflective surfaces, a phase fusion algorithm is proposed based on binary phase-shifting encoding. The phase error caused by the intensity saturation is analyzed and detected based on the periodicity and symmetry of the binary phase-shifting projection patterns. The research results demonstrate that, compared with the saturation error detection method based on the illumination intensity estimation, the proposed method can more accurately detect the areas with saturation phase errors. Compared with the result before correction, the root mean square error of the corrected phase shows a 95.7% reduction in the saturation phase errors and a 96.1% reduction in the maximum phase error. Compared with the traditional detection methods, the root mean square value of the replaced saturation phase error is reduced by 16.7% when fewer measurement groups are used. The results show that the proposed method can effectively reconstruct the surface profile of high reflective objects. The proposed method doesn’t need nonlinear correction, and is of strong anti-noise ability.
作者
郑宏博
Yo-Sung Ho
刘凯
Zheng Hongbo;Liu Kai(College of Electrical Engineering and Information Technology, Sichuan University, Chengdu, Sichuan 61006S, China;School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea)
出处
《激光与光电子学进展》
CSCD
北大核心
2019年第5期125-132,共8页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61473198)
四川省科技厅重点研发项目(2018GZ0198)
成都市科技局重点研发支撑计划(2018-YFYF-00029-GX)
关键词
测量
相位测量轮廓术
二值相移编码
光强度饱和
相位误差
measurement
phase measuring profilometry
binary phase-shifting encoding
light intensity saturation
phase error
