On the radial alignment constraint condition, the image scale factor has been calibrated. The camera external parameters effective focal length and the radial lens distortion can been calibrated with one image. 在考虑径向准直约束的条件下,利用预先标定好的图像尺度因子,采用一幅图像对摄像机的外部参数、有效焦距(EFL)、径向畸变进行标定,标定过程中,每一步均用线性方程组求解。
The theoretical analysis of stimulated emission process revealed that this experimental result was caused by the reason of energy level splitting. ( 2 ) We experimentally analysed the spot size of terahertz after focused by different effective focal length of off-axis parabolic mirror. 通过对受激辐射过程的理论分析,得出能级分裂导致是导致这一实验现象的直接原因这一结论。(2)分析了不同焦距的离轴抛物面镜对太赫兹光束的聚焦效果。
A new error correction method for camera calibration is described. Firstly, a new radial lens distortion model is proposed, and a linear algorithm for calibrating the effective focal length, radial distortion coefficient and Z component of the translation vector is given. 本文针对摄像机成像误差问题,首先提出了一种新的径向畸变模型,利用此模型推出了能精确标定摄像机的关键参数(有效焦距(EFL)、平移矢量的Z向分量以及径向畸变系数)的线性算法;
The effective focal length and back working distance of the system are respectively 100 mm and 113 mm, while the F number is 2.0.The system which has only three lenses contains two negative germanium lenses and one positive zinc selenide lens. 该系统全视场为14°,有效焦距(EFL)为100mm,后工作距为113mm,F/2.0.系统采用锗和硒化锌两种材料,为三片镜结构。
A Camera Calibration Method of Varying Effective Focal Length(EFL) by Neural Network 用神经网络变易有效焦距(EFL)的摄像机标定法