光子学报, 2005, 34 (10): 1550, 网络出版: 2006-06-12
基于双声光偏转器的变频三维数字成像
Frequency-varying 3-D Digital Imaging Based on Dual Acousto-optic Deflectors
三维形貌测量 声光偏转器 直接数字频率合成器 多分辨率 Three-dimensional shape measurement Acousto-optic deflector Direct digital synthesizer Multi-resolution
摘要
提出了一种基于双声光偏转器的时序变频三维数字成像系统.此系统可以实时产生并投射具有不同空间频率的条纹结构光序列照明被测物体,可以以视频速率完成任意形状物体的三维传感.整体系统采用全固态结构,无任何机械运动部件,具有高精度、全场测量、动态可编程、普适性好等特点.给出了该三维数字成像系统对一个台阶状物体形貌测量的应用实例.结果证明DAOP对于解决具有复杂几何形状或拓扑结构物体的三维形貌测量问题是一种有效技术.
Abstract
A three-dimensional profilometry based on a dual-acousto-optic fringe projection is presented. The fringe projector is able to generate a time-series, frequency-varying fringe patterns by using the acousto-optic interaction effect. The system is qualified for video-rate 3-D profilometry of arbitrary shape objects. The AO technique for producing interference patterns provides significant benefits, such as high precision, full field and dynamic programmable ability. Experimental results of a step-like surface are also carried out to demonstrate the effectiveness of our approach.
张鹏, 彭翔, 邱文杰, 韦林彬, 田劲东, 李恩邦, 张大卫. 基于双声光偏转器的变频三维数字成像[J]. 光子学报, 2005, 34(10): 1550. 张鹏, 彭翔, 邱文杰, 韦林彬, 田劲东, 李恩邦, 张大卫. Frequency-varying 3-D Digital Imaging Based on Dual Acousto-optic Deflectors[J]. ACTA PHOTONICA SINICA, 2005, 34(10): 1550.
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