A DCT-based Mod4 steganographic method

  title={A DCT-based Mod4 steganographic method},
  author={KokSheik Wong and Xiaojun Qi and Kiyoshi Tanaka},
  journal={Signal Processing},
This paper presents a novel Mod4 steganographic method in discrete cosine transform (DCT) domain. Mod4 is a blind steganographic method. A group of 2 2 spatially adjacent quantized DCT coefficients (GQC) is selected as the valid message carrier. The modulus 4 arithmetic operation is then applied to the valid GQC to embed a pair of bits. When modification is required for data embedding, the shortest route modification scheme is applied to reduce distortion as compared to the ordinary direct… CONTINUE READING
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Information Hiding Techniques for Steganography and Digital Watermarking

  • S. Katzenbeisser, F. Petitcolas
  • Artech House Publishers
  • 2000
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