Implementation of H.264 Fractional Motion Estimation using full search algorithm

Author

Ahn, Jingyu ; Song, Sehyun ; Kim, Kichul

Author_Institution

Sch. of Electr. & Comput. Eng., Univ. of Seoul, Seoul, South Korea

fYear

2009

Firstpage

357

Lastpage

360

Abstract

This paper proposes a Fractional Motion Estimation(FME) unit for H.264/AVC video codec standard. The proposed FME unit uses full-search algorithm. The FME unit consists of interpolation unit, comparator unit, metadata processing unit, Current Block(CB) buffer, and Reference Block(RB) SRAM address generator. The FME unit processes 30 QCIF frames in a second at 150MHz. The FME unit is a part of Motion Estimation(ME) unit. ME unit uses 2 stage pipeline. One is Integer Motion Estimation(IME) unit and the other is FME unit. The IME and FME unit share RB SRAM. It takes about 3000~9000 cycles for IME unit to process one MacroBlock(MB) and about 2500 cycle for FME unit to process one MB. There is no bubble in ME pipeline architecture.

Keywords

motion estimation; video codecs; video coding; AVC video codec standard; H.264 fractional motion estimation; comparator unit; current block buffer; full search algorithm; interpolation unit; metadata processing unit; reference block SRAM address generator; Automatic voltage control; Hardware; IEC standards; ISO standards; Interpolation; Motion estimation; Nonlinear filters; Pipelines; Random access memory; Video coding; FME; H.264/AVC; Motion Estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

SoC Design Conference (ISOCC), 2009 International

Conference_Location

Busan

Print_ISBN

978-1-4244-5034-3

Electronic_ISBN

978-1-4244-5035-0

Type

conf

DOI

10.1109/SOCDC.2009.5423843

Filename

5423843