摘要
离焦抖动技术有效避免了商用投影仪引入的非线性效应,能够实现高速动态测量,但是离焦后的二值抖动条纹和标准正弦条纹并不完全贴近,测量过程中会有一定的偏差。针对这个测量误差问题,本文提出一种基于改进二进制蚁群算法的优化方法,从相位域对二值离焦抖动技术进行优化改进,较好地提高测量精度。通过对小尺寸二值块的优化替代整个优化过程,提高优化效率。仿真和实验结果证明:本方法在不同离焦情况下都能实现有效的三维测量。
Defocus dithering technology effectively avoids the non-linear effects introduced by commercial projectors and can achieve high-speed dynamic measurement.However,the binary dithering stripes after defocusing and the standard sinusoidal stripes are not completely close,and there will be a certain deviation in the measurement process.Aiming at the measurement error,this paper proposes an optimization method based on an improved bi-nary ant colony algorithm,which optimizes and improves the binary defocus dithering technology from the phase domain to better improve the measurement accuracy.Through the optimization of small-size binary blocks,the entire optimization process is replaced,and the optimization efficiency is improved.Simulation and experimental results prove that this method can achieve effective three-dimensional measurement under different defocus conditions.
作者
邢生平
蔡宁
林斌
Xing Shengping;Cai Ning;Lin Bin(State Key Laboratory of Modern Optical Instruments,Chinese National Engineering Center of Optical Instrument,Zhejiang University,Hangzhou,Zhejiang 310027,China)
出处
《光电工程》
CAS
CSCD
北大核心
2021年第7期63-74,共12页
Opto-Electronic Engineering
基金
浙江省科技计划资助项目(2017C31080)。
关键词
二值图像
改进二进制蚁群算法
抖动
三维形貌获取
binary image
Improved binary ant colony algorithm
dithering
three-dimensional topography acquisition
