基于单目视觉的近景摄影测量在振动台试验中的应用

Application of close-range photogrammetry based on monocular vision in shaking table test

在结构实验中,结构物的变形或位移是一个很重要的实验数据。该文利用普通数码相机记录试验过程,采用霍夫变换(HT)识别标志点圆心,应用数字图像处理技术得到标志点的变形位移量。与传统的位移传感器测量相比,摄影测量是非接触、操作简单,精度可以达到试验要求。通过分析相关的测量数据,证明这种方法是可行的。

Structure distortion or displacement is a very important experiment data in the structure experiments. Using common digital camera records test process and Hough transform （ HT） to identify the center of the landmark can get the landmark deformation and displacement by digital image processing technology. Compared with the traditional displacement sensor, photogrammetry is non-contact, simple operation and automation, precision can meet the test requirements. Experiments prove that this method is feasible.