کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
461365 696586 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adaptive reversible image watermarking scheme
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Adaptive reversible image watermarking scheme
چکیده انگلیسی

This paper presents an adaptive block sized reversible image watermarking scheme. A reversible watermarking approach recovers the original image from a watermarked image after extracting the embedded watermarks. Without loss of generality, the proposed scheme segments an image of size 2N × 2N adaptively to blocks of size 2L × 2L, where L starts from a user-defined number to 1, according to their block structures. If possible, the differences between central ordered pixel and other pixels in each block are enlarged to embed watermarks. The embedded quantity is determined by the largest difference in a block and watermarks are embedded into LSB bits of above differences. Experimental results show that the proposed adaptive block size scheme has higher capacity than conventional fixed block sized method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Systems and Software - Volume 84, Issue 3, March 2011, Pages 428–434
نویسندگان
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