| 摘要 |
An image sequence comprises at least a first image and a second image. A motion vector (MV(1)) is associated to these first and second images and is defined in a coordinate system having at least a first direction and a second direction, the second direction being different from said first direction. This motion vector has a first previous component value (MVD1(0)) in the first direction.A method processes both images in order to determine an estimate of the motion vector based on the first previous component value. To this purpose, the method defines (201) a first image portion in the first image and a second image portion in the second image based on the first previous component value of the motion vector. Then, the method determines (202)a first characteristics vector for the first image in the first image portion and a second characteristics vector for the second image in the second image portion. The first and second characteristics vectors are compared to estimate (203) a first shift value between the first and second images. At last, a second current component value and a first current component value are obtained and the motion vector is defined by these first and second current component values. |
