Apparatus for motion estimation between successive images of an animated image sequence subdivided into two-dimensional blocks of pixels.

摘要

A motion estimation device applied to successively scanned two-dimensional blocks in an image, comprising a module (BMA) which determines a set of error data and a motion vector for each current block, and comprising a coherence structure for creating said "regions" formed of one or more adjacent blocks, each having a single motion vector. BR/ This coherence structure comprises: memory modules (M1, M4, M5) for respectively storing the error data sets of the current block, regions already formed, and their respective numbers; working modules (R2 and R3) formed of two fixed delays to be applied to the error data sets of the left and upper regions, candidates for attachment to the current block; calculation modules (11, 12) for comparing the error data sets of the current block and those of said candidate regions, and possibly deciding the attachment according to predetermined criteria; multiplexers (MUX1, MUX2, MUX3) for routing the data between the different modules; and a module (10) for controlling the switching and calculations. BR/ Application: High definition television, coding device