English  |  正體中文  |  简体中文  |  Items with full text/Total items : 55184/89457 (62%)
Visitors : 10662001      Online Users : 20
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/987654321/73416


    Title: A Watermarking Scheme Based on SVM and Tolerable Position Map
    Authors: 顏淑惠
    Contributors: 淡江大學資訊工程學系
    Date: 2006-10
    Issue Date: 2011-10-24 11:52:23 (UTC+8)
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Abstract: This paper presents a novel digital watermarking technique based on support vector machines (SVMs) and tolerable position map (TPM). The purpose of SVMs is two folds in this study. One is using SVM to identify tolerable positions for watermark embedding on the host image, and the other is using SVM to embed and extract watermarks. By simulating common image attacks on the host image, pixels which are invincible or vulnerable are identified and used for positive or negative samples for training an SVM. Apply this SVM can create a TPM for the host image. To embed and extract watermarks, we use a known binary sequence to train an SVM such that this SVM can be applied for embedding and extracting the watermark. In the proposed scheme, to improve robustness of attacks and image imperceptibility, the watermark is embedded according to the TPM and by asymmetrically tuning blue channels of the central and neighbor pixels. To further reducing extraction errors, the embedded watermark bits are re-modified if necessary according to classifying result of the trained SVM. Our scheme uses only 128 bits in training both SVMs, thus it is time efficient. Experiments show that the proposed scheme provides high PSNR of a watermarked image, low extraction error rate, and extremely robust to common image attacks.
    Relation: Systems, Man and Cybernetics, 2006. SMC '06. IEEE International Conference on (Volume:4 ), pp.3170-3175
    DOI: 10.1109/ICSMC.2006.384604
    Appears in Collections:[Graduate Institute & Department of Computer Science and Information Engineering] Proceeding

    Files in This Item:

    File Description SizeFormat
    A Watermarking Scheme Based on SVM and Tolerable Position Map.pdf3212KbAdobe PDF242View/Open
    index.html0KbHTML128View/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