Browsing by Author "Lee, Chin-Feng"

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The Study of Steganographic Algorithms Based on Pixel Value Difference
(2017-01-01)
Lee, Chin-Feng
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Shen, Jau-Ji
;
Lin, Kuan-Ting
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資訊管理與財務金融系註：原資管所+財金所
;
Department of Information Management and Finance
Wu and Tsai proposed PVD (pixel-value differencing) data hiding method in 2003. PVD partitions a cover image into non-overlapping blocks of two consecutive pixels and calculated the difference value from the two pixels in each block. This method provides an easy way to produce a more imperceptible result. Afterwards, some scholars have proposed PVD-related improvements in image quality and embedding capacity. This paper classifies and discusses the recent PVD-based methods. We will compare each PVD related method in terms of the embedding capacity and PSNR.