English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 49350/84015 (59%)
造访人次 : 7264231      在线人数 : 67
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/96143

    题名: Hierarchy-based reversible data hiding
    作者: Huang, Hsiang-Cheh;Chang, Feng-Cheng
    贡献者: 淡江大學資訊創新與科技學系
    关键词: Reversible data hiding;Hierarchical structure;Histogram;Quad;Image quality;Capacity
    日期: 2013-01
    上传时间: 2014-03-05 07:55:42 (UTC+8)
    出版者: Kidlington, Oxford: Pergamon Press
    摘要: In this paper, we propose a new method for reversible data hiding by employing the hierarchical relationships of original images. There are many parameters for accessing the performances of reversible data hiding algorithms, including the output image quality, the hiding capacity, and the overhead for decoding. Considering the ease of implementation and the little overhead needed for decoding, we employ modification of difference values between pixels by using histogram-based scheme with extensions to pyramidal structure by utilizing inherent characteristics of original images. By doing so, global and local characteristics of original images can be utilized for hiding more capacity with acceptable quality of output image. With our method, better performances can be obtained with enhanced image quality, the more embedding capacity, and comparable amount of side information for decoding. More importantly, the reversibility of our method is guaranteed, meaning that original image and hidden message can both be perfectly recovered at the decoder. Simulation results demonstrate that proposed method in this paper outperforms those in conventional algorithms.
    關聯: Expert Systems with Applications 40(1), pp.34-43
    DOI: 10.1016/j.eswa.2012.07.010
    显示于类别:[資訊創新與科技學系] 期刊論文


    档案 描述 大小格式浏览次数



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈