کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
563137 875472 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Steganalysis of a PVD-based content adaptive image steganography
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Steganalysis of a PVD-based content adaptive image steganography
چکیده انگلیسی

Pixel-value-differencing (PVD) is a well-known technique for content adaptive steganography. By this technique, secret data are embedded into the differences of adjacent pixels. Recently, a new PVD-based steganographic method is proposed by Luo et al. Besides realizing adaptive embedding using PVD, the new method also exploits a pairwise modification mechanism to reduce the distortion. In this work, a targeted detector is devised to detect the new PVD-based steganography. We show that although content adaptive approach may enhance the stego-security, Luo et al.'s PVD-based scheme is not a good choice for realizing adaptive embedding since it contains a serious design flaw in data embedding procedure and this flaw can lead to possible attacks. More specifically, by counting the differences of adjacent pixels in both vertical and horizontal directions, a folded difference-histogram is generated and we show that Luo et al.'s PVD-based method may arise significant artifact to this histogram which can be exploited for reliable detection. Experimental results verify that Luo et al.'s PVD-based method can be detected by the proposed detector even at a low embedding rate of 0.05 bits per pixel.


• PVD is a well-known technique for content adaptive steganography.
• A targeted detector is devised to detect a recently proposed PVD-based method.
• The PVD-based method can be detected even at a low ER of 0.05 bpp.
• A theoretical analysis of the proposed method is provided.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 93, Issue 9, September 2013, Pages 2529–2538
نویسندگان
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