摘要
提出一种基于相机平行运动的圆的几何参数测量方法。首先控制摄像机沿坐标轴平行运动采集图像,对投影椭圆图像处理以提取其边缘信息,利用极线约束求出椭圆的边缘匹配点对,再将匹配点对投影到三维空间求出圆边缘点的实际坐标,采用空间圆拟合求取圆的直径、几何中心和圆度误差。实验结果表明,该方法可以较好地求取空间圆的几何参数。
A measurement method based on parallel motion of a camera that can be used to measure the geometric parameters of the circle is presented. A camera is controlled to translate parallel along the coordinate axis to obtain imagines, then the edge information of the projective ellipse is detected by image processing technology. Based on epipolar constraint, the correspondence of edge points of the ellipse are obtained and the coordinates of the edge in the 3D are measured by projection. The diameter, center position and circularity error of the circle can be obtained by using spatial circle fitting with the circle edge. And the experiment shows that the method can measure the geometric parameters of a spatial circle.
出处
《青岛大学学报（自然科学版）》
CAS
2008年第2期54-58,共5页
Journal of Qingdao University(Natural Science Edition)
关键词
计算机视觉
运动测量
极线约束
参数重建
computer vision
mobile measurement
epipolar constraint
reconstruction
