English  |  正體中文  |  简体中文  |  Items with full text/Total items : 55566/89886 (62%)
Visitors : 11020323      Online Users : 29
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/92818

    Title: An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients
    Authors: Chen, Chien-Chang;Jiun, Zeng-Chuang, Hsu, Chien-Hsiang
    Contributors: 淡江大學資訊工程學系
    Keywords: Reversible image watermarking;integer wavelet transform;difference expansion;adaptive block size
    Date: 2013-07-01
    Issue Date: 2013-10-23 11:07:44 (UTC+8)
    Publisher: Academy Publisher
    Abstract: This paper presents an integer wavelet coefficients based reversible image watermarking scheme. A reversible image watermarking approach extracts the embedded watermarks from a watermarked image and recovers the watermarked image to the original image simultaneously. The proposed approach first applies the host image to 3-layered integer wavelet transform. Nine subimages are acquired from the 3-layered integer wavelet transform. Each subimage is then segmented to blocks of size 2LX2L, where L is determined by structure of the subimage. Then, reversible watermarks are embedded into differences between central ordered pixel and other pixels in each block. Largest difference in each block determines the embedded quantity in each difference. Experimental results show that the proposed adaptive block size scheme has higher capacity and quality ratio than previous works.
    Relation: Journal of Computers 8(7), pp.1677-1682
    DOI: 10.4304/jcp.8.7.1677-1682
    Appears in Collections:[Graduate Institute & Department of Computer Science and Information Engineering] Journal Article

    Files in This Item:

    File Description SizeFormat
    An Adaptive Reversible Image Watermarking.pdf716KbAdobe PDF416View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.

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