Mei Junhui, Yang Xiao, Wang Zhenxin, Chen Xiaobo, Xi Juntong
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Shanghai Key Laboratory of Advanced Manufacturing Environment, Shanghai 200240, China.
Sensors (Basel). 2021 Sep 27;21(19):6444. doi: 10.3390/s21196444.
In this paper, a topology-based stereo matching method for 3D measurement using a single pattern of coded spot-array structured light is proposed. The pattern of spot array is designed with a central reference ring spot, and each spot in the pattern can be uniquely coded with the row and column indexes according to the predefined topological search path. A method using rectangle templates to find the encoded spots in the captured images is proposed in the case where coding spots are missing, and an interpolation method is also proposed for rebuilding the missing spots. Experimental results demonstrate that the proposed technique could exactly and uniquely decode each spot and establish the stereo matching relation successfully, which can be used to obtain three-dimensional (3D) reconstruction with a single-shot method.
本文提出了一种基于拓扑结构的立体匹配方法，用于使用单模式编码点阵列结构光进行三维测量。点阵列模式设计有一个中心参考环形点，并且根据预定义的拓扑搜索路径，模式中的每个点都可以用行和列索引唯一编码。针对编码点缺失的情况，提出了一种使用矩形模板在捕获图像中查找编码点的方法，还提出了一种用于重建缺失点的插值方法。实验结果表明，所提出的技术能够准确且唯一地解码每个点，并成功建立立体匹配关系，可用于单次方法获得三维（3D）重建。
