Abstract
An efficient data hiding method with modulo-2 operation and Hamming code (3, 2) based on absolute moment block truncation coding (AMBTC) is proposed. In order to obtain good data hiding performance, different textures are assigned to different embedding strategies. The AMBTC compressed codes are divided into smooth and complex blocks according to texture. In the smooth block, the secret data and the four most significant bits plane of the two quantization levels are calculated using modulo-2 operation to replace the bitmap in order to improve the security of data transmission. Moreover, Hamming code (3, 2) is used to embed the two additional secret bits in the three significant bits planes of the two quantization levels. In the complex block, one secret bit is embedded by swapping the order of two quantization levels and flipping the bitmap. Experimental results show that the proposed method achieves higher capacity than the existing data hiding methods and maintains good visual quality.
Highlights
With the rapid development of network and multimedia technologies, illegal attackers can grab, tamper or copy secret data during transmission
Considering embedding capacity and visual quality, we propose a data hiding method by modifying the quantization level and the bitmap of absolute moment block truncation coding (AMBTC) compressed codes to minimize the distortion between the original AMBTC image and the stego image
The blocks of the AMBTC compressed codes are classified as smooth blocks and complex blocks
Summary
With the rapid development of network and multimedia technologies, illegal attackers can grab, tamper or copy secret data during transmission. As for the frequency domain method, the original images are transformed into frequency format for data embedding, such as Discrete Fourier Transformation (DFT) [19], Discrete Cosine Transformation (DCT) [20]. This kind of method is more robust against compression compared with the spatial domain based data hiding methods. The compressed domain baseddata hiding method embeds secret data by modifying the compressed code. Some compressed domain baseddata hiding methods embedded data into vector quantization (VQ) format [21], joint photographic experts group (JPEG) format [22], and absolute moment block truncation coding (AMBTC) format [23,24,25,26,27,28] images. Due to the increasing demand for low-cost image compression, several data hiding methods for AMBTC codes were proposed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
