CACHE PREFETCH DURING A HIERARCHICAL MOTION ESTIMATION

摘要

An apparatus having a cache and a processor is disclosed. The cache may be configured to (i) buffer a first subset of a reference picture to facilitate a motion estimation of a current block at a first level of a hierarchical motion estimation and (ii) prefetch a second subset of the reference picture to the cache in response to an occurrence of a condition before the motion estimation is completed at the first level. The processor may be configured to calculate a plurality of scores by comparing the current block with the first subset of the reference picture. The second subset generally (i) resides at a second level of the hierarchical motion estimation and (ii) may be determined from the scores calculated prior to the occurrence of the condition.