| 摘要 |
A technique for generating motion vectors in video and film signal processing using constraint equation based motion estimation. Simplifications of the processing and hardware are made possible by generating motion vectors based on the normalised constraint equation where * differential vector op.;down triangle, open *I is given by The temporal and spatial image gradients are calculated using temporal and spatial differentiators 16,17,18. An angle, * small Greek theta * corresponding to the orientation of the spatial image gradient vector and the motion speed, vn in the direction of the vector are calculated using apparatus including a rectangular to polar coordinate converter 32 and a look up table 34. * small Greek theta * and vn are used to generate the required motion vector from the normalized constraint equation rewritten as u .cos (* small Greek theta *) + v .sin (* small Greek theta *) = vn where |
