12,239 research outputs found
Reversible Data Hiding Methods : A Survey
This paper presents a survey of various reversible data hiding methods. Data hiding is the process of hiding information in a cover media . Most commonly used media for data hiding is image. But during the hiding and extraction of data there are chances for the distortion of image. Reversible data hiding methods are used to solve this problem
Ensemble Reversible Data Hiding
The conventional reversible data hiding (RDH) algorithms often consider the
host as a whole to embed a secret payload. In order to achieve satisfactory
rate-distortion performance, the secret bits are embedded into the noise-like
component of the host such as prediction errors. From the rate-distortion
optimization view, it may be not optimal since the data embedding units use the
identical parameters. This motivates us to present a segmented data embedding
strategy for efficient RDH in this paper, in which the raw host could be
partitioned into multiple subhosts such that each one can freely optimize and
use the data embedding parameters. Moreover, it enables us to apply different
RDH algorithms within different subhosts, which is defined as ensemble. Notice
that, the ensemble defined here is different from that in machine learning.
Accordingly, the conventional operation corresponds to a special case of the
proposed work. Since it is a general strategy, we combine some state-of-the-art
algorithms to construct a new system using the proposed embedding strategy to
evaluate the rate-distortion performance. Experimental results have shown that,
the ensemble RDH system could outperform the original versions in most cases,
which has shown the superiority and applicability.Comment: Fig. 1 was updated due to a minor erro
DCT based Reversible Information Hiding Scheme For Video using Quantized Blocks
The reversible data hiding is used for lossless and reversible streganography scheme for hiding secret data in quantized descret cosine transformation (DCT) blocks. The requirement of reversibility may lead to more modifications to the cover content which result in the tradeoff between the visual quality and hiding capacity. In this paper we propose a reversible information hiding scheme for video, to embeds the information into non-zero AC coefficients of quantized DCT blocks. The experimental results show that the proposed scheme improves both the visual quality and hiding capacity
An Improved Reversible Data Hiding with Hierarchical Embedding for Encrypted Images and BBET
This research introduces an enhanced reversible data hiding (RDH) approach incorporating hierarchical embedding for encrypted images and employs a novel technique termed BBET (Best Bits Embedding Technique). RDH involves concealing information within a host sequence, enabling the restoration of both the host sequence and embedded data without loss from the marked sequence. While RDH has traditionally found applications in media annotation and integrity authentication, its utilisation has expanded into diverse fields. Given the rapid advancements in digital communication, computer technologies, and the Internet, ensuring information security poses a formidable challenge in safeguarding valuable data. Various reversible and stenographic techniques exist for covertly embedding or protecting data, spanning text, images, and protocols, and facilitating secure transmission to intended recipients. An influential approach in data security is reversible data hiding in encrypted images (RDHEI). This paper distinguishes between the conventional RDHEI technique, characterised by lower Peak Signal-to-Noise Ratio (PSNR) and higher Mean Squared Error (MSE), and proposes an improved RDHEI technique. As the prevalence of digital techniques for image transmission and storage rises, preserving image confidentiality, integrity, and authenticity becomes paramount. Text associated with an image, such as authentication or author information, can serve as embedded data. The recipient must adeptly recover both the concealed data and the original image. Reversible data-hiding techniques ensure the exact recovery of the original carrier after extracting the encrypted data. Classification of RDHEI techniques is based on the implemented method employed. This paper delves into a comprehensive exploration of techniques applicable to difference expansion, histogram shifting, and compression embedding for reversible data hiding. Emphasis is placed on the necessity for a reversible data-hiding technique that meticulously restores the host image.
Furthermore, the study evaluates performance parameters associated with encryption processes, scrutinising their security aspects. The investigation utilises the MATLAB tool to develop the proposed BBET technique, comparing its efficacy in embedding and achieving enhanced security features. The BBET technique is characterised by reliability, high robustness, and secure data hiding, making it a valuable addition to the evolving landscape of reversible data hiding methodologies
A Brief Review of RIDH
The Reversible image data hiding (RIDH) is one of the novel approaches in the security field. In the highly sensitive domains like Medical, Military, Research labs, it is important to recover the cover image successfully, Hence, without applying the normal steganography, we can use RIDH to get the better result. Reversible data hiding has a advantage over image data hiding that it can give you double security surely
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