An advanced hierarchical motion estimation scheme with lossless frame recompression for ultra high definition video coding

Xuena Bao, Dajiang Zhou, Peilin Liu, Satoshi Goto

    研究成果: Conference contribution

    3 被引用数 (Scopus)

    抄録

    In this paper, a hardware-efficient fast algorithm with a lossless frame recompression scheme for large search range (SR) motion estimation (ME) utilized in ultra high definition video encoder is presented. To ensure high ME quality for hierarchical motion search, the advanced hierarchical ME scheme which processes the multi-resolution search with a coarse-to-fine strategy in parallel is proposed. This enables high data and hardware reuse for much lower bandwidth and memory cost, which at the same time maintains ME quality. Furthermore, a lossless frame recompression scheme based on this ME algorithm to further reduce DRAM bandwidth is presented. An efficient leveling memory organization as well as a leveling two-step data fetching strategy is proposed to meet constrains of random access for hierarchical motion search structure. Experimental results show that the total scheme increases PSNR by an average of 0.03dB with a much less bit rate increasing compared with previous works especially for high motion sequences, while achieving a considerable saving of memory and bandwidth cost for large SR of [-128, 127].

    本文言語English
    ホスト出版物のタイトル2010 IEEE International Conference on Multimedia and Expo, ICME 2010
    ページ820-825
    ページ数6
    DOI
    出版ステータスPublished - 2010
    イベント2010 IEEE International Conference on Multimedia and Expo, ICME 2010 - Singapore
    継続期間: 2010 7 192010 7 23

    Other

    Other2010 IEEE International Conference on Multimedia and Expo, ICME 2010
    CitySingapore
    Period10/7/1910/7/23

    ASJC Scopus subject areas

    • 人間とコンピュータの相互作用
    • ソフトウェア

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