کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
849947 909275 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel image tamper localization and recovery algorithm based on watermarking technology
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
A novel image tamper localization and recovery algorithm based on watermarking technology
چکیده انگلیسی

In this paper, an effective self-embedding fragile watermarking scheme is presented. The watermark is generated by encoding the DCT coefficients of each 2 × 2 block and embedded into another block according to the block mapping. A non-linear chaotic sequence is used for generating the block mapping which can enhance the security of the algorithm. An improved tamper localization and recovery algorithm are performed. The experiment results show that the watermarked image has a high average peak signal-to-noise ratio. Furthermore, the tamper region can be successfully localized and exactly recovered, even if for the content-only tampering.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 124, Issue 23, December 2013, Pages 6367–6371
نویسندگان
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