کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
529409 869654 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reversible data hiding of a VQ index table based on referred counts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
پیش نمایش صفحه اول مقاله
Reversible data hiding of a VQ index table based on referred counts
چکیده انگلیسی

This paper presents a new reversible VQ-based hiding scheme that can recover the original VQ compressed codes after data extraction. Our scheme sorts a VQ codebook using the referred counts. The VQ codebook is then divided into 2B clusters and half of these clusters are used to embed secret data, in which B denotes the size of the secret data embedded into each VQ index. Compared to Chang et al.’s scheme, which divides a sorted VQ codebook into 2B−1 × 3 clusters and uses the front one-third clusters to embed secret data, our method can embed more data. Moreover, indicator, index exchanging, and side-match prediction schemes are proposed to further improve our scheme. Under the same sorted VQ codebook, the experimental results demonstrate that our data hiding algorithm has higher capacities and better compression rates.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Visual Communication and Image Representation - Volume 20, Issue 6, August 2009, Pages 399–407
نویسندگان
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