一种基于边坡位移场的单目视觉定标

A Monocular Vision Calibration Based on Slope Displacement Field

结合边坡位移场的布设,提出一种新的单目视觉标定方法。人工设置两类标识体,一类为定位点,由两个平面已知点组成;另一类为检测点。通过位移场平面和像平面的相似变换关系,结合自由网平差模型,计算出单应矩阵。由单应关系得到所有检测点坐标。

In this paper, a new kind of monocular vision calibration method was proposed based on the slope displacement field layout. Two kinds of artificial markings were set on slope surface. One of them was positioning logo which consistedof two plane known points, while the other was detecting logo. The similarity transformation relations between displacement field plane and image plane combined with the free net adjustment model were applied to calculate the homography matrix. Coordinates of all the detecting logos were obtained by homography relationship.