基于区域二值编码方法的动态三维形貌测量  

Dynamic Three-Dimensional Shape Measurement Based on Regional Binary Encoding Method

作　　者：黄华权 吴庆阳[1] 贺威[1] 

机构地区：[1]深圳大学电子科学与技术学院,深圳市微纳光子信息技术重点实验室,广东深圳518060

出　　处：《中国激光》2013年第10期201-207,共7页Chinese Journal of Lasers

基　　金：国家自然科学基金仪器专项(61027014);国家自然科学基金青年项目(11109052);深圳大学应用技术开发项目(201151)

摘　　要：提出一种应用于结构光投影三维面形测量的基于区域的二值编码方法。该方法根据被测物体表面的最大起伏来确定区域编码范围和二值编码图案,然后利用基准区域级次直接获得变形条纹的连续相位分布,在保证可靠性和精度的前提下有效地减少了编码图案数量,提高了测量速度;同时,设计了用于动态三维形貌测量系统的硬件模块。该模块实现了240frame/s的条纹投影与同步采集,满足了动态三维形貌采集的要求。实验测量采用6幅图案实现了40frame/s的三维形貌采集,实现了动态三维形貌测量,相关实验结果证明了该技术的可行性。A regional binary encoding method that applied in the structured light projection three-dimensional （3D） shape measurement is proposed. This method determines the region encoding range and binary encoding patters according to the maximum depth of the surface of measured object. Then the continuous phase distribution of the deformed fringe can be acquired directly by using the basic regional order. On the premise of guaranteeing the reliability and accuracy, this technique can effectively reduce the number of encoded patterns and improve the measurement speed. Meanwhile, hardware module used in the dynamic three-dimensional shape measurement system is designed, which can achieve high-speed fringe projection and synchronized image capture at 240 frame/s and meet the requirements of dynamic 3D shape acquisition. Experimental measurement uses six patterns to accomplish the 3D shape acquisition at a speed of 40 frame/s, which realizes the dynamic 3D shape measurement. The experimental results are presented to demonstrate the feasibility of this technique.

关 键 词：测量 动态三维形貌测量 二值编码 动态测量硬件模块 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]