Data Hiding in Halftone Images by XOR Block-Wise Operation with Difference Minimization

• Ching-Nung Yang,
• Guo-Cin Ye,
• Cheonshik Kim,

Vol. 5, No. 2, February 27, 2011
10.3837/tiis.2011.02.013, Download Paper (Free):

• Data Hiding
• halftone image
• XOR operation
• Visual cryptography

Abstract

This paper presents an improved XOR-based Data Hiding Scheme (XDHS) to hide a halftone image in more than two halftone stego images. The hamming weight and hamming distance is a very important parameter affecting the quality of a halftone image. For this reason, we proposed a method that involves minimizing the hamming weights and hamming distances between the stego image and cover image in 2?2-pixel grids. Moreover, our XDHS adopts a block-wise operation to improve the quality of a halftone image and stego images. Furthermore, our scheme improves security by using a block-wise operation with A-patterns and B-patterns. Our XDHS method achieves a high quality with good security compared to the prior arts. An experiment verified the superiority of our XDHS compared with previous methods.

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