针对现有航拍视频拼接算法存在的计算速度慢及累积误差大等问题，提出一种结合地理参数的航拍视频实时拼接算法. 根据地理参数对相机运动模型进行分解，完成视频帧间的实时配准. 估计视频每帧的主运动方向，并对现有单一主方向的流形拼接算法进行改进，将其拓展到任意方向. 依据地理坐标局部修正拼接条带，保证拼接图像与真实地理位置一一映射，减少累积误差. 仿真与真实航拍视频的拼接结果证明了该算法的准确性和准实时性，对640*480 像素视频的拼接速度达到25 帧/s.

Against high computational cost and severe accumulative error problems existing in the current video mosaicing methods, we propose a real-time mosaicing algorithm for aerial videos based on geographical parameters. First, we decompose the camera motion model for image registration in real time. We then estimate the principal orientation of each frame, and extend the uni-orientation manifold mosaicing algorithm to a multi-orientation algorithm. Finally, with geographical parameters, we rectify mosaicing strips locally to make sure that the mosaics are mapped precisely on the real geographical positions. Experimental results for synthetic and real videos demonstrate accuracy and the near real-time property of our algorithm, with the mosaicing speed up to 25 frames per second for videos of 640£480 resolution.