【摘要】 提出一种运动变焦相机分步自标定的方法 .因相机在运动过程中其纵横比、主点固定不变 ,可以事先标定 ;在假设像素无扭曲的情况下基于Huang Faugeras约束线性求解焦距 ,只需输入基础矩阵 ,不必预先进行任何类型的投影阵分解或投影束校正 .线性求解焦距避免了非线性法的不稳定性 ,实际数值实验表明文中方法简单实用 .更多还原

【Abstract】 A novel technique for self calibration of cameras with varying focal length is introduced.The aspect ratio and principal point can be estimated beforehand because they are changeless during camera movements. For zero skew, a linear solution is derived by using the Huang Faugeras constraints. The input of the algorithm is a set of fundamental matrices, and it is unnecessary to perform any projective factorization or projective bundle adjustment. We have developed a step by step linear algorithm which avoids unstability of nonlinear problem. Experiments with synthetic and real data have shown that the technique is simple and useful.更多还原