IMPROVED GRADIENT BASED MOTION ESTIMATION

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. The temporal and spatial image gradients are calculated using temporal and spatial differentiators (16, 17, 18). An angle ( 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). theta and vn are the parameters of the normalised constraint equation.