基于结构光标记的光场三维成像技术研究  

Research on 3D imaging technology of light field based on structural light marker

作　　者：吴庆阳[1,2] 黄浩涛 陈顺治 李奇锋 陈泽锋 卢晓婷 Wu Qingyang;Huang Haotao;Chen Shunzhi;Li Qifeng;Chen Zefeng;Lu Xiaoting(College of Electronics and Information Engineering,Shenzhen University,Shenzhen 518060,China;College of Big Data and Internet,Shenzhen Technology University,Shenzhen 518118,China)

机构地区：[1]深圳大学电子与信息工程学院,广东深圳518060 [2]深圳技术大学大数据与互联网学院,广东深圳518118

出　　处：《红外与激光工程》2020年第3期247-252,共6页Infrared and Laser Engineering

基　　金：国家重大科研仪器研究项目(61827815);深圳市战略性新兴产业发展专项研究基金(JCYJ20170412105812811);深圳技术大学启动项目(201723);深圳技术大学校企合作项目(2018010802013)。

摘　　要：由于四维光场数据中记录了场景中所有光线的方向和强度,通过对其分析和计算即可获得空间场景中对应点的3D坐标。但是目前对光场数据进行处理所采用的重聚焦和多目视觉方法,由于空间场景中特征较少,导致很难确定光场数据中的对应关系光线,因此,重建获得的3D数据不仅稀疏而且精度较低。针对此,提出了一种使用结构光投影技术对三维场景进行标记,并根据相位标记精确的建立起光线之间的对应信息,最终快速地计算出空间场景3D数据的方法。由于4D光场矩阵中存储的是光线相位而不是传统方法中的强度,并且还记录有不同方向的光线信息,因此,该方法不仅提高了传统光场三维重建的精度,还可以解决以往结构光投影三维测量方法中存在的遮挡和高光反射问题。最后通过实验验证了所提方法的可行性和准确性。A method for three-dimensional(3D) reconstruction from four-dimensional(4D) light fields was presented. The 4D light field image recorded the direction and intensity of all rays passing through the scene and contained useful information to estimate scene depth. Point 3D coordinates were obtained by calculating relative positional relationships between rays emitted from one point in the scene. However, it was very difficult in practice to determine these light rays from 4D light field data. The proposed method used fringe projection to mark object surfaces. Light ray information can then be accurately and quickly determined from the phase marker and 3D data calculated. The 4D light field matrix was light ray phase rather of intensity as in the conventional method and can record rays with various directions. Thus, shadow, occlusion, and surface specular reflection problems can be addressed. Feasibility and accuracy of the proposed method were verified experimentally.

关 键 词：光场成像 四维光场 三维重建 结构光投影 

分 类 号：TN206[电子电信—物理电子学]