光栅相移法用于三维人体测量的实验研究

纺织学报 ›› 2013, Vol. 34 ›› Issue (6): 83-87.

光栅相移法用于三维人体测量的实验研究

陈益松夏明林琳

东华大学服装•艺术设计学院

收稿日期:2011-08-05 修回日期:2013-02-22 出版日期:2013-06-15 发布日期:2013-06-19
通讯作者: 陈益松 E-mail:cys@dhu.edu.cn

Experimental study of grating phase-shifting profilometry for body measurement

Received:2011-08-05 Revised:2013-02-22 Online:2013-06-15 Published:2013-06-19
Contact: Yisong Chen E-mail:cys@dhu.edu.cn

摘要/Abstract

摘要： 本实验研究根据光栅相移法的基本原理，通过数字投影仪和数码相机构建了低成本的人体测量实验验证系统，为了消除近心交叉光轴系统所存在的非线性测量误差，本实验采用平行光轴系统设计并运用投影仪移轴和相机区域拍摄技术，扩大了有效测量区域，同时对系统的标定以及投影光栅的设计原则给予详细的描述。文中阐述四步相移法测量人台的实验过程，所获得的条纹图像通过处理与计算，运用基于二阶差分的区域增长抗噪算法进行相位展开，较好地避免了噪声对相位解算的影响，最后前后面点云数据进行拼接实现了人台的虚拟还原。

关键词: 三维人体测量, 人体扫描, 相移法, 投影光栅

Abstract: This study was based on grating phase-shifting algorithm, a low-cost body measurement experiment system was constructed by digital projector and digital camera. The parallel axis system which can avoid the nonlinear error caused by general crossed- axes system were adapted with projector axis shift and camera local area shooting techniques to expand the effective measurement area, simultaneously the detailed description of the calibration of the system as well as the design principle of the projection grating were given. The four-phase algorithm experiment was carried out for measuring a dummy in this paper, The obtained fringe images were processed and calculated, and unwrapping phases was conducted by a second difference region-growing anti-noise algorithm to avoid the noise, finally, the virtual dummy has been constructed by splicing the front and back cloud data.

Key words: 3-D body measurement, body scanning, phase shifting mehod, projection grating

陈益松夏明林琳. 光栅相移法用于三维人体测量的实验研究[J]. 纺织学报, 2013, 34(6): 83-87.

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