从未标定图像恢复建筑物三维模型

Recovering 3D Model of Architecture from Uncalibrated Images

利用建筑物中常见的平行直线和正交直线等特点,通过绝对二次曲线和消失点等射影几何量的计算,可以从未标定图像序列中恢复摄像机的内参数,然后恢复摄像机的方向和位置,同时恢复建筑物的三维欧氏几何模型(相差一个尺度因子)。此方法不需要摄像机预先标定,也不需要摄像机内参数保持不变。

By taking advantage of parallel lines and orthogonal lines in architecture as usual, the camera internal parameters can be recovered from a set of un-calibrated images via computing absolute conic, vanishing points. The Euclidean 3D model of architecture (up to a scale factor) can be recovered when recovering camera orientations and positions. Our method does not require that camera is calibrated or the camera internal parameters are constant.