文章基本信息

标题：A High Capacity Embedding Scheme Based on Graph Theory Randomness and Bit Difference for Covert Communication
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作者：Ahmed Kamel Abbas ; Ahmed Toman Thahab
期刊名称：International Journal on Electrical Engineering and Informatics
印刷版ISSN：2085-6830
出版年度：2019
卷号：11
期号：4
页码：796-808
DOI：10.15676/ijeei.2019.11.4.11
出版社：School of Electrical Engineering and Informatics
摘要：Stenographic techniques are hiding methods that are used in secret communications totransmit secret data inside a carrier media. In this paper, a new image steganography techniquebased on graph theory and bit difference is proposed. Secret image is divided into blocks andrandomized based on graph theory. The cover image is divided into four blocks and each secretimage pixel is grouped into four two-bit groups and concealed inside the cover media. Theembedding algorithm is based on a modified version of bit difference which is considered moresecure. The proposed method is applied in the spatial and transform domain using Integerwavelet transform (IWT) since, IWT is less distortional in retrieving images compared to thediscrete wavelet transform (DWT). Performance analysis of the proposed scheme is tested usingpeak signal to noise ratio (PSNR) and embedding capacity using various cover image formatssuch as (TIFF, PNG, BMP, and JPEG). Results show that the proposed scheme is superior overseveral embedding schemes in terms of capacity and visual symmetry.
关键词：Bit differencing; Embedding Capacity; Image Format; PSNR; Graph theory