Abstract: Camera calibration has been one of important topics for photogrammetry，vision inspection，computer vision and so on.It has been useful in many practical applications，such as mapping，industry controlling，automatic navigation and military.This paper presents the researches on camera models and calibration methods that follow in detail.Improve the camera calibration method of DLT’s，take into account the aberrance of lens.Because the aberrance is little，get a calibration method in which the interior and exterior parameter are apart from the revise parameter of binocular disparity.Finally，a realized example and its steps of 3D reconstruction which is based on two digital camera images of an object are presented.And the factors influence precision is analyzed.

Key words: camera calibration, camera model, lens distortion

摘要： 摄像机标定与图像畸变修正是摄影测量、视觉检测、计算机视觉等领域的重点研究课题之一，在测绘、工业控制、导航、军事等领域得到了极大的应用。研究了摄像机模型，摄像机标定等内容。对DLT的标定方法进行了改进，在摄像机模型中全面考虑了镜头的畸变，利用图像中心附近点畸变量较小的性质，提出一种摄像机内外部参数和像差修正参数分离的标定方法。并举例说明了基于同一物体的两幅图画三维重构的具体实验步骤和方法，分析了影响精度的因素。

关键词: 摄像机标定, 摄像机模型, 镜头畸变