结合地理参数的航拍视频实时拼接算法-应用科学学报.PDF

30 2 Vol. 30 No. 2 20123 JOURNAL OF APPLIED SCIENCES — Electronics and Information Engineering Mar. 2012 DOI: 10.3969/j.issn.0255-8297.2012.02.008 1. 100084 2. . . . . 640 480 25 /s. TP391 0255-8297(2012)02-0151-07 Real-Time Mosaicing for Aerial Videos Combined with Geographical Parameters HE Bei , WANG Gui-jin , SHEN Yong-ling , LIAO Chao , LIU Chun-hua , LIN Xing-gang 1. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China 2. The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China Abstract: 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 pr