An Improved Intensity Factor of Correlation-Based Steganography Using M-Sequence and DCT

作     者：Onuma, Kaito Miyata, Sumiko 

作者机构：Department of Electrical Engineering and Computer Science Shibaura Institute of Technology 3-7-5 Toyosu Koto-ku Tokyo 135-8548 Japan 

出 版 物：《SN Computer Science》 (SN COMPUT. SCI.)

年 卷 期：2024年第5卷第1期

页      面：12页

基　　金：National Institute of Information and Communications Technology, NICT Japan Society for the Promotion of Science, JSPS, (19K11947, 22K12015, 22K12036) 

主　　题：Discrete cosine transform Least significant bits Spread spectrum image steganography Steganography 

摘      要：It is important to securely send information through the Internet;thus, technologies for safely exchanging information are required. One such technology is steganography, which conceals confidential data in multimedia. Although numerous embedding methods have been proposed, increasing embedding capacity, controlling image-quality degradation, and confidentiality are still issues that need to be addressed. There is a method that uses the correlation property of a maximum length sequence (M-sequence) to improve embedding capacity. However, since this method is used in watermarking, which is closely related to steganography, it cannot be directly applied to steganography, which requires a large amount of secret information to embed, because image quality would significantly degrade. We propose two steganography methods that use the correlation property of M-sequence. Particularly, we focused on the improvement of the intensity factor, which is a factor of image-quality degradation. As a result, a significant improvement in image quality was achieved. © 2023, The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd.