Inter-Channel Correlation Modeling and Improved Skewed Histogram Shifting for Reversible Data Hiding in Color Images

Dan He, Zhanchuan Cai (), Dujuan Zhou and Zhihui Chen
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Dan He: School of Computer Science and Engineering, Macau University of Science and Technology, Macau 999078, China
Zhanchuan Cai: School of Computer Science and Engineering, Macau University of Science and Technology, Macau 999078, China
Dujuan Zhou: School of Computer Science and Engineering, Macau University of Science and Technology, Macau 999078, China
Zhihui Chen: School of Computer Science and Engineering, Macau University of Science and Technology, Macau 999078, China

Mathematics, 2024, vol. 12, issue 9, 1-19

Abstract: Reversible data hiding (RDH) is an advanced data protection technology that allows the embedding of additional information into an original digital medium while maintaining its integrity. Color images are typical carriers for information because of their rich data content, making them suitable for data embedding. Compared to grayscale images, color images with their three color channels (RGB) enhance data embedding capabilities while increasing algorithmic complexity. When implementing RDH in color images, researchers often exploit the inter-channel correlation to enhance embedding efficiency and minimize the impact on image visual quality. This paper proposes a novel RDH method for color images based on inter-channel correlation modeling and improved skewed histogram shifting. Initially, we construct an inter-channel correlation model based on the relationship among the RGB channels. Subsequently, an extended method for calculating the local complexity of pixels is proposed. Then, we adaptively select the pixel prediction context and design three types of extreme predictors. The improved skewed histogram shifting method is utilized for data embedding and extraction. Finally, experiments conducted on the USC-SIPI and Kodak datasets validate the superiority of our proposed method in terms of image fidelity.

Keywords: reversible data hiding; color image; skewed histogram shifting; data security (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
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