基于偏移变量的相位编码精确展开方法  

Accurate unwrapping method of phase coding based on offset variable

作　　者：杜迎聪 张晓青[1] 郭阳宽[1] 端木正 DU Yingcong;ZHANG Xiaoqing;GUO Yangkuan;DUANMU Zheng(School of Instrument Science and Opto-Electronic Engineering,Beijing Information Science&Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,北京100192

出　　处：《北京信息科技大学学报（自然科学版）》2024年第4期13-17,共5页Journal of Beijing Information Science and Technology University

基　　金：国家重点研发计划项目(2021YFB3201705)。

摘　　要：为了解决传统相位编码过程中包裹相位边界和级次边界不匹配的问题,提出了一种基于偏移变量的相位编码精确展开方法。在解析条纹边缘时,对相位求解公式增加偏移变量,有效约束包裹相位边界,进而获得正确的绝对相位。实验验证结果表明,所提方法有效消除了边界不匹配带来的相位跳变问题,在不增加投影图像数目的情况下,可以快速准确地恢复绝对相位,并进行三维重建。To address the issue of mismatch between wrapped phase and fringe order boundaries in traditional phase coding,an accurate phase coding unwrapping method based on offset variable was proposed.This method introduced an offset variable into the phase solution formula during the resolution of fringe edges,effectively constraining the wrapped phase boundaries to obtain the correct absolute phase.Experimental validation demonstrates that the proposed method effectively eliminates phase jumps due to boundary mismatches,enabling the rapid and accurate recovery of the absolute phase and facilitating three-dimensional reconstruction without an increase in the number of projection images.

关 键 词：三维重建 相位编码 结构光 相位展开 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]