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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/100840

    Title: A Reversible Image Watermarking Scheme with High Contrast Visible Watermarks
    Authors: 陳建彰
    Contributors: 資訊工程學系暨研究所
    Keywords: Reversible watermarking, visible watermark, high contrast watermark, difference expansion
    Date: 2015-01
    Issue Date: 2015-03-16 11:10:40 (UTC+8)
    Publisher: Korea Database Society
    Abstract: A reversible image watermarking scheme recovers the original host image when extracting the embedded watermarks. General reversible image watermarking scheme embeds invisible watermarks. This paper presents a reversible image watermarking scheme with embedding highly contrast visible watermarks. The host image first segments to non-overlapped blocks. Each block then uses two watermarking schemes including difference-expansion based invisible watermarking and high-contrast visible watermarking to embed one watermark bit into the host image. The difference-expansion based invisible watermarking scheme is adopted for extracting the watermark bit. Some extra information is therefore needed to be recorded. The high contrast visible watermarking scheme embeds significant visible watermarks. Experimental results show that the proposed scheme embeds high contrast visible watermarks and the watermarks can be extracted perfectly.
    Relation: The 13th International Conference on IT Applications and Management
    Appears in Collections:[資訊工程學系暨研究所] 會議論文

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