| 摘要 |
To provide a motion vector detection device capable of rapidly and accurately detecting a main motion vector from plot data on a computer screen. An edge extraction unit (201) extracts edge points from each of a previous frame and a current frame. A feature point extraction unit (202) extracts, as a feature point, an edge point which is uniquely determined based on a relative positional relationship with another at least one edge point within a frame to which the edge points belong, from among a plurality of extracted edge points. A feature point pair extraction unit (203) extracts, as a feature point pair, a pair of feature points having a common positional relationship, among pairs of a feature point of the previous frame and a feature point of the current frame. A motion vector calculation unit (240) calculates, as a motion vector, a difference between coordinate values of the feature point pair extracted from the previous frame and the current frame.
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