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三维形状和变形测量基于边缘投影配置测量和光数字图像对应通过3充电合设备摄像机

Wei Sun¹, Zhongda Xu¹, Xin Li¹

¹College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

Sensors (Basel, Switzerland)

|August 12, 2023

概括

一种新的混合边缘投影形测量-数字图像关联 (FPP-DIC) 技术同时使用单一摄像头测量3D形状和变形. 这种方法减少了模式交叉语音,并提高了精确的位移测量的准确性.

科学领域:

光学计量学在光学计量学
实验力学实验力学实验力学
三维测量 3D测量

背景情况:

精确的3D形状和变形测量在工程和材料科学中至关重要.
传统的混合FPP-DIC方法可能会受到模式交叉和位移合的影响.

研究的目的:

开发一种新的混合FPP-DIC技术,用于同时进行3D形状和变形测量.
与现有方法相比,提高准确性和减少交叉通话.

主要方法:

使用单个3CCD彩色摄像机捕捉蓝色边缘图案和红色光斑点.
采用边缘投影形计 (FPP) 用于平面外移动和2D数字图像相关性 (DIC) 用于平面内移动.
实现三芯片摄像头配置,用于独立的RGB信息捕获.

主要成果:

拟议的FPP-DIC技术证明了边缘和斑点图案之间的交叉声减少.
这种方法有效地纠正了平面内和平面外位移的合.
实验结果显示高精度,与3D-DIC相比,最大差异为0.7微米和0.034毫米.

结论:

新的混合FPP-DIC技术为同时进行3D形状和变形测量提供了精确有效的解决方案.
这种方法通过克服传统方法的局限性来推进光学计量学.

关键词:

3CCD彩色摄像机的颜色摄像机.数字图像相关性相关性数字图像相关性有光斑点的光斑点.边缘投影的概况测量方法远程中心镜头 (telecentric lens) 是一种远程中心的镜头.

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