| 摘要 |
For each motion vector corresponding to a region of an image, a plurality of temporal and spatial image gradients are calculated corresponding to that region. From the constraint equations, , of the image gradients a plurality of error values can be calculated for each motion vector and a parameter generated describing the size of the distribution of motion vector measurement errors. Subsequent processing of the video signals using the motion vectors can then be adapted, for example by graceful fallback (i.e. starting from full motion compensation and gradually reducing the compensation leading to no compensation if necessary) in motion compensated interpolation, depending on the accuracy of each motion vector. The 'confidence' in the accuracy of each motion vector can be described by a parameter calculated in relation to the size of the error distribution and the motion vector speed. |
