基于预标定彩色散斑光场照明的三维轮廓测量技术研究

项目名称： 基于预标定彩色散斑光场照明的三维轮廓测量技术研究

项目编号： No.61308073

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 王少卿

作者单位： 中国科学院上海光学精密机械研究所

项目金额： 26万元

中文摘要： 提出了利用多路激光照射随机达曼光栅产生彩色散斑光场，并将预标定彩色散斑光场应用到物体三维轮廓测量研究中。研究一种全新的基于预标定彩色散斑光场照明的三维轮廓测量技术。分析规则达曼点阵、彩色散斑特征、图像匹配精度的三者相互关系,以此优化设计并制作随机达曼光栅。设计随机达曼光栅多路激光照明系统，建立物体轮廓测量实验装置并获得有价值的实验成果。研究彩色散斑特征描述子标准样本学习与预标定方法。研究基于区域特征的规则点邻域随机点生长匹配方法。研究基于预标定散斑特征库的全局亚像素匹配求精方法。 该研究是将衍射光学元件应用于计算机视觉的一个创新性研究，此学科交叉研究会带来很多有价值的研究课题。基于该三维轮廓测量技术的设备具有无机械约束、成本低廉、结构简单、抗干扰、分辨率高、测量速度快等优点，在逆向工程、先进制造、文物保护、数字娱乐等领域也有着广泛的应用前景。

中文关键词： 三维重建；衍射光学元件；散斑；锚点生长匹配；

英文摘要： Color speckle is generated by random dammann grating，which is illuminated simultaneously by lasers with different wavelengths,and the pre-calibration of the color speckle is utilized in the research of three-dimensional profile measurement. Research a novel 3D profile measurement technique based on pre-calibrated color speckle illumination. Analysis the relationship among the regular Dammann array dots, camera calibration accuracy,and image matching accuracy,then optimize and fabricate random Dammann grating. Designed the multi-beam illumination system based on the random Dammann grating, and establish the experimental system to measure 3D profile by binocular vision and to obtain valuable results. Study the learning and pre-calibrating method of feature descriptor of color speckle based on standard sample. Study the growth matching method of neighborhood points based on the regional characteristic. Study the sub-pixel global refine method based on pre-calibrated color speckle feafure library. This is an innovative research by applying the diffractive optical element into computer vision, and this interdisciplinary research will bring a lot of valuable topics. The equipment based on this three-dimensional profile measurement technique has advantages of no mechanical limit, low-cost, simple structure, anti-interf

英文关键词： 3D reconstruction；Diffractive Optical Element；Speckle；Anchor Point Growing Match；