Implementation of parallel integer motion estimation method by using reference blocks shared for HD video encoding

The redundant data in integer motion estimation (IME) come from the overlapping reference blocks of consecutive current macroblocks processing, and thus increase the requirement of memory bandwidth. In order to overcome these obstacles, we propose the SRBIME (Shared Reference Block Integer Motion Estimation) and implement. In the SRBIME, one reference block is shared for parallel current macroblocks processing in order to enhance data reusability and to reduce internal memory on IME design. Experimental results show that the proposed motion estimation design saves 95.9% of external memory bandwidth than Inter-Candidate data reuse scheme, 3% of gate count and 11.8% of local memory are saved compared with previous design while supporting higher encoding specification.