激光与光电子学进展, 2023, 60 (8): 0811014, 网络出版: 2023-04-13
基于VCSEL投影阵列的散斑结构光三维成像技术及其传感器设计
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Speckle Structured- Light- Based Three- Dimensional Imaging Technology and Its Sensor Design Using VCSEL Projection Array
图 & 表
图 1. 基于VCSEL投影阵列的三维结构光传感器的硬件结构示意图
Fig. 1. Diagram of the hardware structure of the 3D structured-light sensor based on VCSEL projection array

图 2. 由粗到精的时空散斑相关算法的示意图
Fig. 2. Diagram of a coarse-to-fine spatial-temporal speckle correlation algorithm

图 4. 基于归一化互信息的单像素时域匹配方法
Fig. 4. Single-pixel temporal matching method based on normalised mutual information

图 5. 使用不同插值函数的插值前后差异的直方图。(a)线性插值函数;(b)抛物线插值函数;(c)融合插值函数
Fig. 5. Histogram of difference before and after interpolation using different interpolation functions. (a) Linear interpolation function; (b) parabolic interpolation function; (c) fused interpolation function

图 6. 使用不同插值函数的三维点云结果。(a)线性插值函数;(b)抛物线插值函数;(c)融合插值函数
Fig. 6. 3D point cloud results using different interpolation functions. (a) Linear interpolation function; (b) parabolic interpolation function; (c) fused interpolation function

图 7. 精度分析结果。(a)不同距离的测量误差曲线;(b)100 cm处平面的点云结果;(c)100 cm处平面的误差直方图
Fig. 7. Precision analysis result. (a) Measurement error curves at different distances; (b) point cloud results of the plane at 100 cm; (c) error histograms of the plane at 100 cm

图 10. 不同设备输出的三维点云与标准数据间的测量误差
Fig. 10. Measurement error between the 3D point cloud output by different devices and the standard data

图 11. 金属零件的远距离测量实验。(a)~(c)不同姿态堆叠放置的金属螺丝钉的散斑图;(d)~(f)对应的三维点云结果
Fig. 11. Long-distance measurement experiment of metal parts. (a)-(c) Speckle images of metal screws stacked in different postures; (d)-(f) corresponding 3D point cloud results

尹维, 李明雨, 胡岩, 冯世杰, 张晓磊, 王槐, 陈钱, 左超. 基于VCSEL投影阵列的散斑结构光三维成像技术及其传感器设计[J]. 激光与光电子学进展, 2023, 60(8): 0811014. Wei Yin, Mingyu Li, Yan Hu, Shijie Feng, Xiaolei Zhang, Huai Wang, Qian Chen, Chao Zuo. Speckle Structured