SVM Based Watermarking Technique

淡江大學機構典藏 > 工學院 > 資訊工程學系暨研究所 > 期刊論文 > Item 987654321/45297

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題名:	SVM Based Watermarking Technique
其他題名:	一種以SVM為基礎的浮水印技術
作者:	顏淑惠;Yen, Shwu-huey, Wang, Chia-jen
貢獻者:	淡江大學資訊工程學系
關鍵詞:	Digital Watermarking;Support Vector Machines (SVMs)
日期:	2006-06-01
上傳時間:	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
顯示於類別:	[資訊工程學系暨研究所] 期刊論文

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