Efficient Memory Reuse and Sub-Pixel Interpolation Algorithms for ME/MC of H.264/AVC

This paper presents efficient memory reuse and sub-pixel interpolation algorithms for ME (motion estimation)/MC (motion compensation) of H.264/AVC ME is a computationally intensive task and its number of memory accesses is quite high. Moreover, sub-pixel interpolation requires many additions and multiplications. The proposed memory reuse algorithm utilizes the position similarity of the MVp (motion vector prediction) among neighboring Sub-MBs (macro blocks). It can reduce a large number of memory accesses and can save power consumption by sharing SR (search range) of the current block. In addition, simplifying weights of sub-pixel interpolation can eliminate multiplications. Thus, this algorithm can reduce its complexity and power consumption. Therefore, the proposed memory reuse and sub-pixel interpolation algorithms can be employed for low power video compression