INFORMATICA
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INFORMATICA, 2007, Vol. 18, No. 4, 615-628
© Institute of Mathematics and Informatics,
ISSN 0868-4952
Look-up Table Based Reversible Data Hiding for Error Diffused Halftone Images
Jeng-Shyang PANa, Hao LUOa, Zhe-Ming LUa
aDepartment of Electronic Engineering, National Kaohsiung University of Applied Sciences 415 Chien-Kung Road, Kaohsiung 807, Taiwan, ROC E-mail: jspan@cc.kuas.edu.tw
aDepartment of Automatic Test and Control, Harbin Institute of Technology 92 West Dazhi Road, Harbin 150001, P. R. China E-mail: luohao723@hotmail.com, hluo@bit.kuas.edu.tw
aVisual Information Analysis and Processing Research Center, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen Xili Univ. Town, Shenzhen, 518055, P. R. China E-mail: zhemingl@yahoo.com
Abstract
This paper proposes a reversible data hiding method for error diffused halftone images. It employs statistics feature of pixel block patterns to embed data, and utilizes the HVS characteristics to reduce the introduced visual distortion. The watermarked halftone image can be perfectly recovered if it is intact, only a secret key is required. The method is suitable for the applications where the content accuracy of the original halftone image must be guaranteed, and it is easily extended to the field of halftone image authentication.
Keywords:
look-up table, halftone images, reversible data hiding, human visual system
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