A low distortion reversible data hiding scheme for search order coding of VQ indices

Rahmani, Peyman; Dastghaibyfard, Gholamhossein

doi:10.1007/s11042-014-2200-2

Cited by 8 publications

(4 citation statements)

References 35 publications

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“…A reversible data hiding scheme allows the cover media to be completely recovered after the secret data is extracted. In the literature, there are many image, audio and video data hiding schemes [25][26][27][28][29][30][31][32], while there are limited database data hiding schemes.…”

Section: Introductionmentioning

confidence: 99%

A novel secure data outsourcing scheme based on data hiding and secret sharing for relational databases

2023

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Data encryption‐based and secret sharing‐based data outsourcing schemes protect the confidentiality of sensitive attributes but not their secrecy. Ciphertexts/shares generated by a data encryption/secret sharing scheme can attract the attention of interceptors. Thus, it is desired to hide the existence of highly‐sensitive attributes (as secret attributes) in the outsourced relations in addition to protecting their contents. This paper proposes a novel scheme that integrates data hiding with secret sharing for relational databases to protect both the secrecy and confidentiality of secret attributes. It embeds one or multiple secret attributes in a relation into one or multiple cover attributes in the same relation. A set of share (and possibly index) columns are constructed such that they are pretended to be associated with only the cover attributes, while those share columns and some virtual share columns can be used to recover both the secret and cover attributes. What interceptors observe in each relation include the attributes stored in plaintext and the share (and possibly index) columns associated with the cover attributes but not any extra column. Thus, they find nothing suspicious. This is the first effective data hiding scheme for relational databases that protects the secrecy of secret attributes.

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Section: Introductionmentioning

confidence: 99%

A novel secure data outsourcing scheme based on data hiding and secret sharing for relational databases

2023

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“…Usually, image is taken as the embedding cover medium to hide data. Recently, DH schemes are classified into two main types: irreversible data hiding (IDH) schemes [3], [4] and RDH schemes [5], [6]. For some DH applications, such as a communication, medical [7] or military application, their original image must be recovered without any distortion, so RDH methods are developed rapidly for the recipient cannot completely recover the cover image with the IDH schemes.…”

Section: Introductionmentioning

confidence: 99%

New High Capacity Reversible Data Hiding Using the Second-Order Difference Shifting

Wang

2020

IEEE Access

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Reversible data hiding (RDH) algorithm is developing rapidly for many years. Usually, the histogram shifting (HS) based RDH algorithm has two main steps: Firstly, a steep difference histogram is generated with some effective methods for difference. Secondly, by extending and shifting some differences in the histogram, bits of information can be embedded into the cover image which can be restored reversibly. In this paper, we proposed the second-order difference to obtain a steeper difference histogram. Firstly, we slide a window with size 2 × 2 through the image. For each block, we can get the two first-order differences by calculating the absolute values of the two differences for its two columns. Thus, the secondorder difference of each block, which is the absolute values of the difference of the two first-order differences, can be obtained. By extending and shifting the second-order difference, a bit may be embedded into the block finally. Experiments reveal that the proposed algorithm outperforms the previous state-of-the-art RDH methods in terms of the computational complexity, image distortion and the embedding performance. INDEX TERMS Difference expanding, cover image, histogram shifting, reversible data hiding, the secondorder difference, watermarking.

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“…In recent years, several VQ‐based reversible image data hiding schemes have been developed [5–37]. However, most VQ‐based RDH schemes in the literature generate non‐legitimate codes as outputs [5–29], i.e.…”

Section: Introductionmentioning

confidence: 99%

“…The schemes developed in [30][31][32] use the first mechanism and the schemes proposed in [33][34][35] use the second mechanism for data embedding. The schemes developed in [36,37] use a hybrid mechanism.…”

Section: Introductionmentioning

confidence: 99%

Two reversible data hiding schemes for VQ‐compressed images based on index coding

Rahmani

Dastghaibyfard

2018

IET image process

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This study proposes two reversible data hiding (RDH) schemes for vector quantisation (VQ)-compressed images based on switching-tree coding (STC) and dynamic tree-coding scheme (DTCS). Most developed VQ-based RDH schemes produce non-legitimate codes as output. In order to preserve the legitimacy of the embedded VQ code, some schemes embed data into VQ indices by employing an index replacement mechanism and some other schemes perform embedding by adopting one of the possible ways during encoding each index when multiple ways are possible to encode the index. In the current research, two schemes are proposed based on the second mechanism. Outputted code of the proposed schemes is a legitimate STC/DTCS code and the conventional STC/DTCS decoder can decode it to the original VQ index table. The experimental results show that the proposed schemes are feasible and in comparison with some previous RDH schemes, the first one provides higher embedding capacity and the second one embeds a substantial amount of data while provides lower bit rate than most the previous schemes. In addition, the embedding-efficiency of both proposed schemes is higher than that of the previous schemes.

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A low distortion reversible data hiding scheme for search order coding of VQ indices

Cited by 8 publications

References 35 publications

A novel secure data outsourcing scheme based on data hiding and secret sharing for relational databases

A novel secure data outsourcing scheme based on data hiding and secret sharing for relational databases

New High Capacity Reversible Data Hiding Using the Second-Order Difference Shifting

Two reversible data hiding schemes for VQ‐compressed images based on index coding

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