论文部分内容阅读
给出了将改进的两步法与精确控制点相结合来精确校准立体像机的新技术,像机镜头畸变模型考虑了径向畸变和切向畸变。利用红外发光二极管随三坐标测量机测头移动以确定间距来形成立体校准模板上的精确控制点。校准程序包括先使用位于图像中心的控制点来线性求取部分校准参数,然后再使用所有控制点来迭代优化所有参数。实验中使用非线性优化参数来反推控制点的空间位置,发现精度比线性求解参数提高了0.11 mm,结果表明,此技术可以满足像机精确校准和测量的要求.
The new technique of accurately calibrating the stereo camera by combining the improved two-step method with the precise control point is given. The lens distortion model considers the radial distortion and the tangential distortion. The precise control point on the stereocenter template is formed using an infrared light emitting diode moving with the CMM probe to determine the spacing. The calibration procedure involves first using the control points located in the center of the image to linearly extract some of the calibration parameters and then using all the control points to iteratively optimize all the parameters. In the experiment, the nonlinear optimization parameters were used to inverse the spatial position of the control points, and the precision was 0.11 mm higher than the linear solution parameters. The results show that this technique can meet the requirements of precise camera calibration and measurement.