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A video stitching system based on mirror pyramids and non-overlapping calibration method

The panoramic cameras on the market do not allow seamless stitching of the object close to the camera with the existence of non-zero parallax angle. Meanwhile, the traditional real-time stitching technology requires that the geometry of the camera group is known, and the external projection points are used to manually find feature points in the overlapped region. Therefore, this paper presents a method in creating a mirror reflection panoramic real-time splicing system by calibration. And because that the images taken by each camera have very narrow overlapping areas, a non-overlapping calibration method is proposed, requires only four fixed calibration patterns by rotations to complete a simple and convenient calibration work with evident effect. The ability of the camera being built on capturing a close-up shot during live video is of great significance for the future of panoramic video shooting.