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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/45297


    Title: SVM Based Watermarking Technique
    Other Titles: 一種以SVM為基礎的浮水印技術
    Authors: 顏淑惠;Yen, Shwu-huey, Wang, Chia-jen
    Contributors: 淡江大學資訊工程學系
    Keywords: Digital Watermarking;Support Vector Machines (SVMs)
    Date: 2006-06-01
    Issue Date: 2010-03-26 18:56:29 (UTC+8)
    Publisher: 臺北縣:淡江大學
    Abstract: This paper presents a digital watermarking technique based on Support Vector Machines (SVMs). Use the nice characteristic of the SVM, which can result an optimal hyperplane for the given training samples, the imperceptibility and robustness requirements of watermarks are fulfilled and optimized. In the proposed scheme, to improve imperceptibility, the watermark is embedded by asymmetrically tuning blue channels of the central and surrounding pixels at the same time. Furthermore, to promote robustness, the embedded watermark bits will be re-modified if necessary according to classifying result of the trained SVM. Our scheme uses only 128 bits in training SVM, thus it is time efficient. Watermarks are embedded in spatial domain and extracted directly from a watermarked image without the requirement of original image. Experiments show that the proposed scheme provides high PSNR of a watermarked images and low extraction error rate.
    Relation: 淡江理工學刊=Tamkang journal of science and engineering 9(2), pp.141-150
    DOI: 10.6180/jase.2006.9.2.08
    Appears in Collections:[資訊工程學系暨研究所] 期刊論文

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