| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-viewpoint video expression device 1 which achieves multi-viewpoint video expression even if a subject is not captured in the center of a photographed video.SOLUTION: The multi-viewpoint video expression device 1 includes: a multi-viewpoint video photographing section 10; a multi-viewpoint video storage section 20; a weak camera calibration section 30 for performing weak camera calibration on a photographed video; a close observation point designation section 50 where a position of a subject is designated as a close observation point; a roll shaft calculation section 61 for calculating a roll shaft unit vector turning the close observation point from a position of a photographing camera; a tilt shaft calculation section 63 for calculating a tilt shaft unit vector displayed by a cross product of the roll shaft unit vector and an installation face normal unit vector; a pan shaft calculation section 65 for calculating a pan shaft unit vector displayed by a cross product of the tilt shaft unit vector and the roll shaft unit vector; and a projection transformation section 70 for projection-transforming a photographed video so that the close observation point is positioned in the center of an image. |
