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Open AccessFeature PaperArticle

A Hybrid Data Hiding Method for Strict AMBTC Format Images with High-Fidelity

1
Department of Information Engineering and Computer Science, Feng Chia University, Taichung 40724, Taiwan
2
School of Computer Science and Technology, Hangzhou Dianzi University, Hangzhou 310018, China
3
Department of Electronic Engineering, National Quemoy University, Kinmen 89250, Taiwan
*
Author to whom correspondence should be addressed.
Symmetry 2019, 11(10), 1314; https://doi.org/10.3390/sym11101314
Received: 11 September 2019 / Revised: 17 October 2019 / Accepted: 18 October 2019 / Published: 19 October 2019
With the rapid development of smartphones, cloud storage, and wireless communications, protecting the security of compressed images through data transmission on the Internet has become a critical contemporary issue. A series of data hiding methods for AMBTC compressed images has been proposed to solve this problem. However, most of these methods either change the file size of the final compressed code or exchange the order of two quantization values in some blocks. To reverse this situation, this paper proposes a data hiding method for strict AMBTC format images using a hybrid strategy: replacement, matrix encoding, and symmetric quantization value embedding for three block types i.e., smooth blocks, less complex blocks and highly complex blocks. According to the hybrid strategy, an efficient data hiding order is designed to achieve higher-fidelity. Experimental results show that our proposed method provides an excellent balance between image quality and hiding capacity and has no error blocks in the final stego-compressed code. View Full-Text
Keywords: data hiding; strict AMBTC format; high-fidelity; matrix coding data hiding; strict AMBTC format; high-fidelity; matrix coding
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Chang, C.-C.; Wang, X.; Horng, J.-H. A Hybrid Data Hiding Method for Strict AMBTC Format Images with High-Fidelity. Symmetry 2019, 11, 1314.

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