11,919 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
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
Reversible Data Hiding in Encrypted Images with Private Key Cryptography
Volume 7 Issue 11 (November 201
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