A halftone visual cryptography schema using ordered dither

Liu-Ping Feng; Dong-Sheng Cong; Hua-Qun Liu; Meng-Min Wang

doi:10.1117/12.2064154

16 April 2014 A halftone visual cryptography schema using ordered dither

Liu-Ping Feng, Dong-Sheng Cong, Hua-Qun Liu, Meng-Min Wang

Proceedings Volume 9159, Sixth International Conference on Digital Image Processing (ICDIP 2014); 91590I (2014) https://doi.org/10.1117/12.2064154
Event: Sixth International Conference on Digital Image Processing, 2014, Athens, Greece

Abstract

Visual cryptography is a cryptographic technique which allows visual information to be encrypted in such a way that the decryption can be performed by the human visual system, without the aid of computers. This paper proposes a schema of information hiding within the method of visual cryptography. The gray image is changed into two halftone images via the different dither matrixes respectively, and the secret binary pixels are encoded into shares. The secret information can be restored by stacking the different shared halftone images together. Simulation results show that the secret binary image can be decoded efficiently.

Citation Download Citation

Liu-Ping Feng, Dong-Sheng Cong, Hua-Qun Liu, and Meng-Min Wang "A halftone visual cryptography schema using ordered dither", Proc. SPIE 9159, Sixth International Conference on Digital Image Processing (ICDIP 2014), 91590I (16 April 2014); https://doi.org/10.1117/12.2064154

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