Multiple Messages Embedding Using DCT-Based Mod4 Steganographic Method [chapter]

KokSheik Wong, Kiyoshi Tanaka, Xiaojun Qi
2006 Lecture Notes in Computer Science  
This paper proposes an extension of DCT-based Mod4 steganographic method to realize multiple messages embedding (MME). To implement MME, we utilize the structural feature of Mod4 that uses vGQC (valid group of 2 × 2 adjacent quantized DCT coefficients) as message carrier. vGQC's can be partitioned into several disjoint sets by differentiating the parameters where each set could serve as an individual secret communication channel. A maximum number of 14 independent messages can be embedded into
more » ... cover image without interfering one message and another. We can generate stego images with image quality no worse than conventional Mod4. Results for blind steganalysis are also shown.
doi:10.1007/11848035_10 fatcat:nsl34twvingfher5q4lwofhu4m