Line-based camera movement estimation by using parallel lines in omnidirectional video

In this paper, we propose an efficient estimation method of an omnidirectional camera movement. The proposed method is based on Structure from Motion utilizing a constraint of parallel lines. In an environment having manmade structures, parallel lines can be extracted from an omnidirectional image easily and constantly, because of its wide field of view. Parallel lines provides a valuable constraint for camera movement estimation. The proposed method can estimate 3-D camera movements by solving one degree of freedom problem three times without regard to the number of viewpoints. Experimental results show the effectiveness of our proposed method.