| 摘要 |
A method and apparatus for detecting the direction and magnitude of motion of a moving object in a television picture by detecting motion vectors in a digitised video signal representative of said picture. Detection is achieved by detecting shifts of areas at which motion exists by using signals representative of fields before and after the field to be detected. According to the shifts of these detected areas, an initial vector Voa, Vob closest to the true motion is selected among prospective initial vectors produced at an initial vector selector 3x, 3y or an initial vector detector by a block matching method, thereby reducing detection errors in motion vectors Vx, Vy occurring at the time of detection of the motion vectors, thereby improving the accuracy of motion vectors Vx, Vy so that image distortion is minimised in an interpolating process. |
