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Proceedings Paper

A halftone visual cryptography schema using ordered dither
Author(s): Liu-Ping Feng; Dong-Sheng Cong; Hua-Qun Liu; Meng-Min Wang
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Paper 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.

Paper Details

Date Published: 16 April 2014
PDF: 4 pages
Proc. SPIE 9159, Sixth International Conference on Digital Image Processing (ICDIP 2014), 91590I (16 April 2014); doi: 10.1117/12.2064154
Show Author Affiliations
Liu-Ping Feng, Beijing Institute of Graphic Communication (China)
Dong-Sheng Cong, Beijing Institute of Graphic Communication (China)
Hua-Qun Liu, Beijing Institute of Graphic Communication (China)
Meng-Min Wang, Beijing Institute of Graphic Communication (China)


Published in SPIE Proceedings Vol. 9159:
Sixth International Conference on Digital Image Processing (ICDIP 2014)
Charles M. Falco; Chin-Chen Chang; Xudong Jiang, Editor(s)

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