Parallel architecture for a pel-recursive motion estimation algorithm

The paper presents a parallel architecture for a pel-recursive motion estimation algorithm. It is a linear array of processors, each consisting of an initialization part, a data-routing part and an updating part. The initializing part performs a prediction of the motion vector. The routing parts constitute a routing path along which previous-frame data is routed from processors that store to processors that request such data. A clocked version of the router is presented with some detail. The updating part calculates an update to the predicted motion vector. The architecture proposed is derived in a systematic way and is parameterized w.r.t. certain window sizes. It is thus completely different from the few existing pel-recursive motion estimation architectures