摘要
相位展开是投射正弦条纹的结构光三维扫描技术的关键环节。本文提出了一种绝对相位展开方法,通过四步相移法,投射三组不同频率的正弦光栅条纹,再以低频的展开相位为基础,展开中频光栅和高频光栅,相位展开不依赖展开路径、不依赖相邻像素、不需要任何参数的绝对相位。
Phase unwrapping is a key part of the structured light 3D scanning technique for projecting sinusoidal fringes.This paper proposed an absolute phase expansion method,three sets of sinusoidal grating strips of different fre?quencies were projected by the four-step phase shift method,and the intermediate frequency grating and the high fre?quency grating were developed based on the unwrapped phase of the low frequency,phase unwrapping did not depend on the unwrapped path,did not depend on adjacent pixels,and did not require any parameters of the absolute phase.
作者
周波
ZHOU Bo(Sanya College,Sanya Hainan 572022)
出处
《河南科技》
2019年第29期84-87,共4页
Henan Science and Technology
关键词
频率合成
相位展开
相移法
三维扫描技术
frequency synthesis
phase unwrapping
phase shift method
three-dimensional scanning technology
