7.1投影变换概念及其分类 Objec Obj Projector P pl DOP tion plane COF Center of projection( COP)-center of the camera lenses origin of the camera frame Direction of Projection(DOP)-viewing from infinity Projections planar geometric projections non-planar projections7.1 投影变换概念及其分类 •Center of projection (COP) – center of the camera lenses origin of the camera frame •Direction of Projection (DOP) – viewing from infinity Projections •planar geometric projections •non-planar projections