通过分析该模型中物与像的对应关系，得出了射影失真产生的根源是光学系统放大率的不恒定，并与相机的外参数：倾角及视场的大小有着非线性的变化关系。
The reason for Projective distortion that the amplification ratio is not constant but has nonlinear relation with pitch and tilt angles and field of view of cameras was found out.
在已知欧氏重构即摄像机内参数的基础上，介绍一种基于标定的平面射影失真矫正方法。
Under the known camera internal parameters circumstance, uses a good method of rectifying the perspective distortion.
方法：首先，比较分析编码结构光系统的解析几何模型和射影几何模型，统一了二者的设备参数、姿态和位置参数。
Method: First, device parameters and azimuth parameters of analytic geometry model and projective geometry model of coded structured light system were analyzed and unified.
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