Da-Chun Wu*, Zong-Nan Shih
CMES-Computer Modeling in Engineering & Sciences, Vol.141, No.1, pp. 353-383, 2024, DOI:10.32604/cmes.2024.050813
Abstract A new steganographic method by pixel-value differencing (PVD) using general quantization ranges of pixel pairs’ difference values is proposed. The objective of this method is to provide a data embedding technique with a range table with range widths not limited to powers of 2, extending PVD-based methods to enhance their flexibility and data-embedding rates without changing their capabilities to resist security attacks. Specifically, the conventional PVD technique partitions a grayscale image into 1 × 2 non-overlapping blocks. The entire range [0, 255] of all possible absolute values of the pixel pairs’ grayscale differences in the… More >
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