https://scholars.lib.ntu.edu.tw/handle/123456789/154810
標題: | Fast Algorithm and Architecture Design of Low-Power Integer Motion Estimation for H.264/AVC | 作者: | Chen, Tung-Chien Chen, Yu-Han Tsai, Sung-Fang SHAO-YI CHIEN LIANG-GEE CHEN |
關鍵字: | ISO/IEC 14496-10 AVC; ITU-T Rec. H.264; Motion estimation (ME); VLSI architecture | 公開日期: | 2007 | 卷: | 17 | 期: | 5 | 起(迄)頁: | 568-576 | 來源出版物: | IEEE Transactions on Circuits and Systems for Video Technology | 摘要: | In an H.264/AVC video encoder, integer motion estimation (IME) requires 74.29% computational complexity and 77.49% memory access and becomes the most critical component for low-power applications. According to our analysis, an optimal low-power IME engine should be a parallel hardware architecture supporting fast algorithms and efficient data reuse (DR). In this paper, a hardware-oriented fast algorithm is proposed with the intra-/inter-candidate DR considerations. In addition, based on the systolic array and 2-D adder tree architecture, a ladder-shaped search window data arrangement and an advanced searching flow are proposed to efficiently support inter-candidate DR and reduce latency cycles. According to the implementation results, 97% computational complexity is saved by the proposed fast algorithm. In addition, 77.6% memory bandwidth is further saved with the proposed DR techniques at architecture level. In the ultra-low-power mode, the power consumption is 2.13 mW for real-time encoding CIF 30-fps videos at 13.5-MHz operating frequency. © 2007 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-34247556136&doi=10.1109%2fTCSVT.2007.894044&partnerID=40&md5=9ed6fb4505abc4c69fc1b55eb2aa0c0b http://scholars.lib.ntu.edu.tw/handle/123456789/329277 http://ntur.lib.ntu.edu.tw/bitstream/246246/141473/1/61.pdf |
ISSN: | 10518215 | DOI: | 10.1109/TCSVT.2007.894044 | SDG/關鍵字: | Integer motion estimation (IME); ISO/IEC 14496-10 AVC; ITU-T Rec. H.264; Video encoder; Algorithms; Bandwidth; Computational complexity; Computer hardware; Image coding; Trees (mathematics); VLSI circuits; Motion estimation |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。