Single-iteration full-search fractional motion estimation for quad full HD H.264/AVC encoding
Journal
Proceedings - 2009 IEEE International Conference on Multimedia and Expo, ICME 2009
Pages
9-12
Date Issued
2009
Author(s)
Abstract
Fractional motion estimation (FME) is widely used in video compression standards. In H.264/AVC, the precision of motion vector is down to quarter pixels to improve the coding efficiency. However, FME occupies over 45% of the computation complexity in an H.264 encoder and this high complexity limits the processing capability. In this paper, a single-iteration full search FME is proposed. By the algorithm and architecture co-optimization, the bandwidth to the frame buffer is reduced by 31%. Furthermore, 82% of circuit area for the Hadamard transformation and subtraction are saved from the direct implementation. Compared with prior arts, the proposed design supports 3.39 x higher throughput with only 0.02 dB PSNR drop. Thus, the specification of 4096 x 2160 quad full high definition H.264/AVC FME processing can be achieved. ©2009 IEEE.
Event(s)
2009 IEEE International Conference on Multimedia and Expo, ICME 2009
Subjects
Fractional motion estimation; Full search; H.264/AVC; Quad full high definition; Video coding
SDGs
Other Subjects
Fractional motion estimation; Full search; H.264/AVC; Quad full high definition; Video coding; Computational efficiency; Estimation; Image compression; Motion Picture Experts Group standards; Multimedia systems; Visual communication; Motion estimation
Type
conference paper