“Image Resolution Conversion Method Using Spatial Scalability”

Takaaki Ishikawa, Hiroshi Watanabe

    研究成果: Article査読

    抄録

    Recently, the importance of SNR and spatial scalability in image coding has been increased. JPEG 2000 has advanced SNR and spatial scalability functions. However, the spatial scalability of JPEG 2000 is limited to the cases where decimated resolutions are 1/22 of the source image resolution. Therefore, Digital-Cinema resolution cannot be converted to SDTV or QVGA size image by decoding the JPEG 2000 bitstream directly. We propose a resolution conversion method using spatial scalability, which combines LL sub-band with a decimation filter. Experimental results confirm an improvement in PSNR of 1-2 dB as compared to conventional resolution conversion methods.

    本文言語English
    ページ(範囲)548-557
    ページ数10
    ジャーナルJournal of the Institute of Image Electronics Engineers of Japan
    34
    5
    DOI
    出版ステータスPublished - 2005 1 1

    ASJC Scopus subject areas

    • コンピュータ サイエンス(その他)
    • 電子工学および電気工学

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