A Simple and Practical Single-Camera Stereo-Digital Image Correlation Using a Color Camera and X-Cube Prism
A Simple and Practical Single-Camera Stereo-Digital Image Correlation Using a Color Camera and X-Cube Prism
复制标题
使用彩色相机和 X 立方棱镜的简单实用的单相机立体数字图像关联
DOI：
10.3390/s19214726
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发表时间：
2019-11-01
期刊：
影响因子：
3.9
通讯作者：
Pan, Bing
中科院分区：
文献类型：
--
作者：
Dong, Bo;Zeng, Fancang;Pan, Bing
提出了一种简单实用的全帧单相机立体数字图像相关（stereo-DIC）技术，用于三维（3D）形状、位移和变形测量。该技术使用紧凑型X立方棱镜分色装置和彩色相机从不同光路捕获蓝色和红色图像，然后通过使用常规立体DIC算法处理捕获的两个子通道彩色图像来提取测试样本的表面3D形状和变形信息。与现有的全画幅单摄像头立体 DIC 相比，所提出的立体 DIC 无需分束器和两个带通滤波器来捕获图像，并提供更简单、紧凑且易于使用的光学布置。这种新颖的单摄像头立体 DIC 技术经过了一系列涉及 3D 表面重建、平移测试和全场变形测量的基线实验的验证，为测量表面 3D 形状和变形提供了一种新的灵活实用的途径，特别是在微观和高速应用中。
A simple and practical full-frame single-camera stereo-digital image correlation (stereo-DIC) technique for three-dimensional (3D) shape, displacement, and deformation measurements is proposed. The technique uses a compact X-cube prism-based color separation device and a color camera to capture images of blue and red colors from different optical paths, and then extracts the surface 3D shape and deformation information of a test sample by processing the captured two sub-channel color images using regular stereo-DIC algorithm. Compared with the existing full-frame single-camera stereo-DICs, the proposed one eliminates the need for a beam splitter and two bandpass filters to capture images, and offers more simple, compact, and easy-to-use optical arrangement. This novel single-camera stereo-DIC technique was validated by a series of baseline experiments involving 3D surface reconstructions, translation tests, and full-field deformation measurements, which provide a new flexible and practical avenue for measuring surface 3D shape and deformation, particularly in microscopic and high-speed applications.