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High-Payload Image Hiding Scheme Using k-Way Block Matching

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2 Author(s)
Shang-Kuan Chen ; Dept. of Comput. Sci. & Inf. Eng., Yuanpei Univ., Hsinchu, Taiwan ; Ran-Zan Wang

This paper proposes a high-payload image hiding scheme using k-way block matching. The method divides the important image into multiple non-overlapping blocks. For each block, a k-way block matching procedure is designed to search for the most similar block from k (k ≥2) sets of 2n candidate blocks. By carefully applying a k-base modulus operation to evaluate k [base, difference] mappings for a block, the proposed scheme enlarges the searching space of an n-bit index to k×2n candidate blocks, which reduces the quantity of data should be recorded, hence increases the quality of the embedding results. Experimental results show that the qualities of the obtained stego-image and the extracted image are better than those reported in previous block-matching-based image steganography schemes.

Published in:

Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP), 2010 Sixth International Conference on

Date of Conference:

15-17 Oct. 2010