کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
461935 696649 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Image watermarking with a directed periodic pattern to embed multibit messages resilient to print-scan and compound attacks
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Image watermarking with a directed periodic pattern to embed multibit messages resilient to print-scan and compound attacks
چکیده انگلیسی

In this paper, we propose a blind method to embed multibit watermarks in images, robust to various attacks on geometry and print-scan process. For carrying the multibit information, a method using directed watermark patterns is proposed. A message sequence is mapped to a directional angle of a periodic pattern, which is then embedded into image blocks. In the detection, using autocorrelation function, filtering, masking, and adaptive line search with Hough transform, the alignment of the autocorrelations peaks are detected from image blocks, and interpreted as a message. The method provides a robust and blind extraction of information after a print-scan attack. Additionally, the experiments with two laser printer and two printout material show that the method is robust to compound attacks, such as Stirmark random bending, shearing, aspect ratio change, cropping, translation, or JPEG combined with print-scan.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Systems and Software - Volume 83, Issue 10, October 2010, Pages 1715–1725
نویسندگان
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