Invertible steganography is a kind of information hiding, in which a secret message is embedded in a carrier in such a way that the human visual system is less sensitive. Moreover, the original media is completely retrieved after the secret message is extracted. This chapter proposes a novel invertible steganography scheme with high embedding capacity using two-dimensional histogram shifting in the transform domain. We investigated that the DCT-quantized coefficients of each pair of similar blocks in the left and right views of stereo image commonly meet to values, and the secret bits are first partitioned into 3-bit groups and encoded into decimal form. The embedding direction histogram (EDH) is built and used for embedding. By using EDH to shift the middle frequency DCT-quantized coefficients of the two-dimensional histogram the proposed scheme archives the trade-off between imperceptibility and embedding capacity. The experimental results indicated the method had better performance in comparison to previous schemes.
Số tạp chí Yo-Ping HuangWen-June WangHoang An QuocLe Hieu GiangNguyen-Le HungThe 5th International Conference on Green Technology and Sustainable Development, Ho Chi Minh City, 27-28 November 2020(2020) Trang: 130-143
Tạp chí khoa học Trường Đại học Cần Thơ
Lầu 4, Nhà Điều Hành, Khu II, đường 3/2, P. Xuân Khánh, Q. Ninh Kiều, TP. Cần Thơ
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