کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
459992 696299 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A local variance-controlled reversible data hiding method using prediction and histogram-shifting
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
A local variance-controlled reversible data hiding method using prediction and histogram-shifting
چکیده انگلیسی

The stego image quality produced by the histogram-shifting based reversible data hiding technique is high; however, it often suffers from lower embedding capacity compared to other types of reversible data hiding techniques. In 2009, Tsai et al. solved this problem by exploiting the similarity of neighboring pixels to construct a histogram of prediction errors; data embedding is done by shifting the error histogram. However, Tsai et al.’s method does not fully exploit the correlation of the neighboring pixels. In this paper, a set of basic pixels is employed to improve the prediction accuracy, thereby increasing the payload. To further improve the image quality, a threshold is used to select only low-variance blocks to join the embedding process. According to the experimental results, the proposed method provides a better or comparable stego image quality than Tsai et al.’s method and other existing reversible data hiding methods under the same payload.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Systems and Software - Volume 83, Issue 12, December 2010, Pages 2653–2663
نویسندگان
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