Movement vector detector for compensating movement in image - uses reference window data and comparator receiving summed outputs of processor elements to derive movement vector for pattern block of current image

摘要

The appts. uses a processor field (1) with processing elements (PE) arranged in a two dimensional field. Each element (PE) has memory elements (25, 26) to store search window data of a reference image and pattern block data of a current image. They also have a circuit (4) to determine an absolute difference between the stored and pattern data. Each element (PE) shifts the stored data unidirectionally to an adjacent element on the data transmission path. The elements (PE) shift the stored window data while the pattern data are retained. In each shift cycle of the window data a displacement vector is calculated by a summer (12) which receives the output of the processor elements (PE). A comparator (3) receives the summed output to derive a movement vector for the pattern block. USE/ADVANTAGE - Transmission and storage of image signals. Accurately determines movement vector more quickly using less power and simple circuitry.