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    题名: SVM Based Watermarking Technique
    其它题名: 一種以SVM為基礎的浮水印技術
    作者: 顏淑惠;Yen, Shwu-huey, Wang, Chia-jen
    贡献者: 淡江大學資訊工程學系
    关键词: Digital Watermarking;Support Vector Machines (SVMs)
    日期: 2006-06-01
    上传时间: 2010-03-26 18:56:29 (UTC+8)
    出版者: 臺北縣:淡江大學
    摘要: 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.
    關聯: 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
    显示于类别:[資訊工程學系暨研究所] 期刊論文


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