کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
454609 695244 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dual-wrapped digital watermarking scheme for image copyright protection
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Dual-wrapped digital watermarking scheme for image copyright protection
چکیده انگلیسی

Digital watermarking is an effective way to protect the rightful ownership of multimedia contents. In this paper, a two-phase watermarking scheme is proposed, which extracts both the grayscale watermark and the binary one from the protected images to achieve the copyright protection goal. In the first phase, the proposed method utilizes the pixel values of the original image to construct a grayscale watermark image. In the second phase, a binary watermark image can be further retrieved via the just-procured-permuted grayscale watermark from the first phase. Under these circumstances, the proposed technique results in lossless embedding; in other words, the protected images are the same as the original ones. The overall verification procedure does not need the original image. Only those who have the original grayscale watermark and the corresponding secret keys can extract the grayscale and binary watermarks sequentially, which enhances security and robustness of the proposed watermarking system. Experimental results show that the proposed approach satisfies the general requirements of image watermarking and is superior to related methods in terms of transparency and robustness. Moreover, it is easier to be implemented than transform-domain techniques. These flexible features make the proposed method more feasible and practical for copyright protection.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Security - Volume 26, Issue 4, June 2007, Pages 319–330
نویسندگان
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